2001 Vol. 18, No. 3
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2001, 18(3): 219-222.
Abstract:
Chinese fir planted forest is the main part of timber forest resource in Zhejiang Province, China .By the model statistical analysis method, the authors researched and decided the growth model, then calculated the quantitative maturity age, and decided the economical maturity age by maximum land expectation value and maximum internal rate of return, finally decided the cutting age of Chinese fie planted forest. The result is that the quantitative maturity age of Chinese fir is 24～29, the economical maturity age is 17~27, the cutting age is 19~26, and they are different among forests on different sites.
Chinese fir planted forest is the main part of timber forest resource in Zhejiang Province, China .By the model statistical analysis method, the authors researched and decided the growth model, then calculated the quantitative maturity age, and decided the economical maturity age by maximum land expectation value and maximum internal rate of return, finally decided the cutting age of Chinese fie planted forest. The result is that the quantitative maturity age of Chinese fir is 24～29, the economical maturity age is 17~27, the cutting age is 19~26, and they are different among forests on different sites.
2001, 18(3): 223-227.
Abstract:
Collective forest is the main component of forest resources in China. Forest management survey is a very important technologic way in increasing the management level. By investigating and practicing, the authors discovered the problems in forest management survey of collective forest, then suggested that the forest management survey should be mainly token by the managementbody, and managed by the forestry agency, and directed by the forestry research institute, the management factor should be considered, different period and forest resource data renew should be token to different forest in subcompartment survey.
Collective forest is the main component of forest resources in China. Forest management survey is a very important technologic way in increasing the management level. By investigating and practicing, the authors discovered the problems in forest management survey of collective forest, then suggested that the forest management survey should be mainly token by the managementbody, and managed by the forestry agency, and directed by the forestry research institute, the management factor should be considered, different period and forest resource data renew should be token to different forest in subcompartment survey.
2001, 18(3): 228-232.
Abstract:
One-way volume table used in large scale continuous forest inventory is unsuitable for forest inventory of county-class in this region. To counter this problem, the cluster analysis method is offered. The procedure of cluster is as following: the cluster diagram is firstly made with tree height curve, relative Euclidean distance and class mean method, and then is divided into units. This method provided theoretical basis for classifying the similar counties within range of error, and for making regional one-way volume table being suitable for county-class forest inventory.
One-way volume table used in large scale continuous forest inventory is unsuitable for forest inventory of county-class in this region. To counter this problem, the cluster analysis method is offered. The procedure of cluster is as following: the cluster diagram is firstly made with tree height curve, relative Euclidean distance and class mean method, and then is divided into units. This method provided theoretical basis for classifying the similar counties within range of error, and for making regional one-way volume table being suitable for county-class forest inventory.
2001, 18(3): 233-237.
Abstract:
The problem of sustainable development of forests is discussed by the method of motion design, and the model of the natural development of forests and optimal developing model of the sustainable development of forests are established. The models select Cyclobalanopsis glarca-Calycanthus chinensis community to calculate and the results show that the forests can reach a stable stage after natural development of a time and Calycanthus chinensis community must transfer to Cyclobalanopsis glauca-Calycanthus chinensis community, after that, the amount of all kinds of trees in every stage will change a little, but the population mean is stable. The algorithm end as a stable point quickly.
The problem of sustainable development of forests is discussed by the method of motion design, and the model of the natural development of forests and optimal developing model of the sustainable development of forests are established. The models select Cyclobalanopsis glarca-Calycanthus chinensis community to calculate and the results show that the forests can reach a stable stage after natural development of a time and Calycanthus chinensis community must transfer to Cyclobalanopsis glauca-Calycanthus chinensis community, after that, the amount of all kinds of trees in every stage will change a little, but the population mean is stable. The algorithm end as a stable point quickly.
2001, 18(3): 238-244.
Abstract:
Sustainable development reflects the internal need required by socio-econimic development and social progress, and is a leap-forward in human cognition about development. Owing to its essential role in global environment protection, forestry sustainable development has become the focus of worldwide attention. This paper, in the light of the history and conception of sustainable development, discussed the conception, regional division and evaluation index system of forestry sustainable development. The index system of forestry sustainability in a county is divided into 3 levels, based on the fundamental principles of evaluation and index structures: target level (degree of sustainability), category level (degree of abundance in resources, degree of system stability, degree of economic prosperity and degree of management) and item level (including 17 specific indexes).
Sustainable development reflects the internal need required by socio-econimic development and social progress, and is a leap-forward in human cognition about development. Owing to its essential role in global environment protection, forestry sustainable development has become the focus of worldwide attention. This paper, in the light of the history and conception of sustainable development, discussed the conception, regional division and evaluation index system of forestry sustainable development. The index system of forestry sustainability in a county is divided into 3 levels, based on the fundamental principles of evaluation and index structures: target level (degree of sustainability), category level (degree of abundance in resources, degree of system stability, degree of economic prosperity and degree of management) and item level (including 17 specific indexes).
2001, 18(3): 245-251.
Abstract:
The dominant population structure and dynamic state of the deciduous broad-leaved forest in the Tiantai Mountains of Zhejiang were analyzed by adopting the method of spacial series substituting for time series. The results are as follows: The age-class for most deciduous broad-leaved trees is incomplete; the population's survival cures are not linear and its age structure is declining; the age structure of the evergreen broad-leaved trees is stable or increasing; the distribution pattern of Heptacodium miconioides or Quercus glandulifera var. brevipetiolata population is of clump, and the distribution pattern for most of the other deciduous broad-leaved trees is of possion or uniform; the distribution pattern of Schima superba or Lithocarpus harlandii is of clump; the intensity of different dominant populations is gradually decreasing from the small trees to big ones, and the populations are diffusing.
The dominant population structure and dynamic state of the deciduous broad-leaved forest in the Tiantai Mountains of Zhejiang were analyzed by adopting the method of spacial series substituting for time series. The results are as follows: The age-class for most deciduous broad-leaved trees is incomplete; the population's survival cures are not linear and its age structure is declining; the age structure of the evergreen broad-leaved trees is stable or increasing; the distribution pattern of Heptacodium miconioides or Quercus glandulifera var. brevipetiolata population is of clump, and the distribution pattern for most of the other deciduous broad-leaved trees is of possion or uniform; the distribution pattern of Schima superba or Lithocarpus harlandii is of clump; the intensity of different dominant populations is gradually decreasing from the small trees to big ones, and the populations are diffusing.
2001, 18(3): 252-256.
Abstract:
The effect of the different scale of artificial disturbance (ck, the original forest; A, the regeneration of selection cutting; B, the natural regeneration; C, the natural regeneration promoted by artificial measure and class; D, Chinese fir) on the restoration of the Castanopsis fargesii forest in Wuyishan, Fujian is discussed through the flora of tree layer. The results show that the Castanopsis fargesii is dominant in the tree layer of ck, class A and class B. The intolerant tree species, Castanopsis fargesii is dominant in the tree layer of ck, class A and class B. The intolerant tree species, Castanopsis fisaa is the first dominant species and the climax species, Castanopsis fargesii is the second dominant species while the dominant species in the tree layer change essentially, and Chinese fir becomes dominant influenced by aftificial planting. The composition of species, the number of species and genus in every family; the distribution kind of genus, the public species adjacent to the area and the coefficient of species among populations reduce or decrease as the S pattern with the enhancement in the scale of artificial disturbance through the analysis of the flora of tree stratum. D class, Chinese fir, the tree layer's indice are more different from that of natural Castanopsis fargesii forest because of the control on the community by the dominant species-Chinese fir. And other regenerations will go back to climax community.
The effect of the different scale of artificial disturbance (ck, the original forest; A, the regeneration of selection cutting; B, the natural regeneration; C, the natural regeneration promoted by artificial measure and class; D, Chinese fir) on the restoration of the Castanopsis fargesii forest in Wuyishan, Fujian is discussed through the flora of tree layer. The results show that the Castanopsis fargesii is dominant in the tree layer of ck, class A and class B. The intolerant tree species, Castanopsis fargesii is dominant in the tree layer of ck, class A and class B. The intolerant tree species, Castanopsis fisaa is the first dominant species and the climax species, Castanopsis fargesii is the second dominant species while the dominant species in the tree layer change essentially, and Chinese fir becomes dominant influenced by aftificial planting. The composition of species, the number of species and genus in every family; the distribution kind of genus, the public species adjacent to the area and the coefficient of species among populations reduce or decrease as the S pattern with the enhancement in the scale of artificial disturbance through the analysis of the flora of tree stratum. D class, Chinese fir, the tree layer's indice are more different from that of natural Castanopsis fargesii forest because of the control on the community by the dominant species-Chinese fir. And other regenerations will go back to climax community.
2001, 18(3): 257-261.
Abstract:
The genetic test of 217 super clones of Chinese fir in Fujian Province in four years were analyzed in this paper. The geneticparameters of growth related traits were also estimated. The results showed that the difference of main growth related traits among clones were significant. Twenty-three super clones of Chinese fir were selected from 217 clones according to this genetic test , which have higher productive level and genetic gain than that of progeny from first generation seed orchard and therefor fit for the application in north of Fujian Province and similar ecological condition related areas.
The genetic test of 217 super clones of Chinese fir in Fujian Province in four years were analyzed in this paper. The geneticparameters of growth related traits were also estimated. The results showed that the difference of main growth related traits among clones were significant. Twenty-three super clones of Chinese fir were selected from 217 clones according to this genetic test , which have higher productive level and genetic gain than that of progeny from first generation seed orchard and therefor fit for the application in north of Fujian Province and similar ecological condition related areas.
2001, 18(3): 262-266.
Abstract:
Urban landscaping is a chief means to protect and improve urban ecological environment.. To get the highest ecological efficiency, the important function of the broad-leaved evergreen trees in urban greenery is clarified in accordance with the related principle between leaf area index and ecological efficiency. On the basis of summing up more than 20-year introduction and domestication practices, 10 species of Michelia, including Mchelia chapensis, Michelia szechuanica, Michelia foveolata var. cinerascens, etc. are recommended in application of urban landscaping in Hangzhou City.
Urban landscaping is a chief means to protect and improve urban ecological environment.. To get the highest ecological efficiency, the important function of the broad-leaved evergreen trees in urban greenery is clarified in accordance with the related principle between leaf area index and ecological efficiency. On the basis of summing up more than 20-year introduction and domestication practices, 10 species of Michelia, including Mchelia chapensis, Michelia szechuanica, Michelia foveolata var. cinerascens, etc. are recommended in application of urban landscaping in Hangzhou City.
2001, 18(3): 267-270.
Abstract:
The cultural techniques of Patrinia villosa under different planting densities, different fertilizing measurements and management in productive period were studied in 1998 to 2000. The results showed that plastic green house was beneficial to the growth and productivity of Patrinia villosa in winter and spring. The ideal density was 25 plants per square metre. Meanwhile, the compound fertilizer was greatly helpful to the production. Based on the strong ecologic adaptation, Patrinia villosa was suitable to be cultivated. The annual production reached 39.2 thm-2 when Patrinia villlosa was cultivated in the open soil.
The cultural techniques of Patrinia villosa under different planting densities, different fertilizing measurements and management in productive period were studied in 1998 to 2000. The results showed that plastic green house was beneficial to the growth and productivity of Patrinia villosa in winter and spring. The ideal density was 25 plants per square metre. Meanwhile, the compound fertilizer was greatly helpful to the production. Based on the strong ecologic adaptation, Patrinia villosa was suitable to be cultivated. The annual production reached 39.2 thm-2 when Patrinia villlosa was cultivated in the open soil.
2001, 18(3): 271-273.
Abstract:
An analysis was conducted on the components of proteins in shoots of 19 cultivars and 2 affinis species of Phyllostachys praecox. The results indicate that these bamboo shoots have the same kinds of amino acids, but different content. As far as the total of amino acids, essential amino acids and the content of different kinds of amino acids in shoots are concerned, cultivars Anhui Lei Bamboo, Anhui Early Bamboo, Jinhua Lei Bamboo and Yuyao Lei bamboo possess obviously higher than those in other bamboos, and those in Stalk-curved Lei Bamboo are very low, while the differences among the other bamboos are not obvious.
An analysis was conducted on the components of proteins in shoots of 19 cultivars and 2 affinis species of Phyllostachys praecox. The results indicate that these bamboo shoots have the same kinds of amino acids, but different content. As far as the total of amino acids, essential amino acids and the content of different kinds of amino acids in shoots are concerned, cultivars Anhui Lei Bamboo, Anhui Early Bamboo, Jinhua Lei Bamboo and Yuyao Lei bamboo possess obviously higher than those in other bamboos, and those in Stalk-curved Lei Bamboo are very low, while the differences among the other bamboos are not obvious.
2001, 18(3): 274-277.
Abstract:
The experiments showed that Camptotheca acuminata is fine in veneer peeling, veneer drying and gluing characteristics, has no special requirements for adhesives and processing technology, and is a good timber supplier for plywood. The proper technology factors of the plywood are 0.8 MPa of hot-pressing pressure, 100 ～ 120 ℃of hot-pressing temperature, 30 smm-1 of hot-pressing time, 200 gm-2 of resin level and 9 %～ 12 %of veneer moisture content.
The experiments showed that Camptotheca acuminata is fine in veneer peeling, veneer drying and gluing characteristics, has no special requirements for adhesives and processing technology, and is a good timber supplier for plywood. The proper technology factors of the plywood are 0.8 MPa of hot-pressing pressure, 100 ～ 120 ℃of hot-pressing temperature, 30 smm-1 of hot-pressing time, 200 gm-2 of resin level and 9 %～ 12 %of veneer moisture content.
2001, 18(3): 278-280.
Abstract:
Under pressure treatment conditions the liquid penetrability in fast-growing Chinese fir and factors affecting on it were studied. Through a series of quantitative and qualitative analysis, the result showed that exterior pressure and pressing time had more effect on penetrability, but dyestuff solution content had less effect. The optimum was as follows: steeping time of 60～90 min, exterior pressure of 0.3～0.4 MPa and dyestuff solution consistence of 5～10 gL-1 .
Under pressure treatment conditions the liquid penetrability in fast-growing Chinese fir and factors affecting on it were studied. Through a series of quantitative and qualitative analysis, the result showed that exterior pressure and pressing time had more effect on penetrability, but dyestuff solution content had less effect. The optimum was as follows: steeping time of 60～90 min, exterior pressure of 0.3～0.4 MPa and dyestuff solution consistence of 5～10 gL-1 .
2001, 18(3): 281-285.
Abstract:
DNA of Metarrhizium anisopliae isolates was analyzed by RAPD. Twenty-seven primers screened and optimized out of 160 primers were applied to the proliferation of PCR. Three-hundred-four loci have been proliferated in 4 strains of M .anisopliae, 299 loci out of which are of polymorphism and account for 89.5%. All these suggest that each strain has an abundant genetic polyorphism. There is some correlation between DNA polymorphism of strains and their original hosts, size of conidiospore, distributions, but no obvious correlation between DNA polymorphism and virulence on Monochamus alternatus larvae.
DNA of Metarrhizium anisopliae isolates was analyzed by RAPD. Twenty-seven primers screened and optimized out of 160 primers were applied to the proliferation of PCR. Three-hundred-four loci have been proliferated in 4 strains of M .anisopliae, 299 loci out of which are of polymorphism and account for 89.5%. All these suggest that each strain has an abundant genetic polyorphism. There is some correlation between DNA polymorphism of strains and their original hosts, size of conidiospore, distributions, but no obvious correlation between DNA polymorphism and virulence on Monochamus alternatus larvae.
2001, 18(3): 286-289.
Abstract:
In recent years, pure forests of exotic pines were seriously harmed by resinosis in some areas of Zhejiang. Using the method of plot observation, separation culture, light-microscope examination, electricmicroscope, observation, measurement of trace elements, as well as controlling the disease for harmed pure forests with borax etc. , the disease situation was found out in Zhejiang. Its symptoms could be divided into 3 types: the type of dead terminal leaf buds, the type of bunch branches and the type of spike tops. The resinosis is a physiological disease, and is caused by lack of effective boron content in soil and tree body. Obvious control effect could be obtained by spraying 3.0 gkg-1or 5.0 gkg-1 of borax solution. The disease indexes in control plots decreased by 38.5. The average increment of tree height in control plot is 14.8 cm higher from that in contrast plot.
In recent years, pure forests of exotic pines were seriously harmed by resinosis in some areas of Zhejiang. Using the method of plot observation, separation culture, light-microscope examination, electricmicroscope, observation, measurement of trace elements, as well as controlling the disease for harmed pure forests with borax etc. , the disease situation was found out in Zhejiang. Its symptoms could be divided into 3 types: the type of dead terminal leaf buds, the type of bunch branches and the type of spike tops. The resinosis is a physiological disease, and is caused by lack of effective boron content in soil and tree body. Obvious control effect could be obtained by spraying 3.0 gkg-1or 5.0 gkg-1 of borax solution. The disease indexes in control plots decreased by 38.5. The average increment of tree height in control plot is 14.8 cm higher from that in contrast plot.
2001, 18(3): 290-293.
Abstract:
Intermediate cutting enhances the conversion function of Pinus yunnanensis stands and defense ability of that against Tomicus piniperda. Different levels of intermediate cutting intensities for the stands have different sustainable control effects of T .piniperda. The effect of sustainable control for T .piniperda is the most significant with less and moderate less intensity of intermediate cutting. The population of T .piniperda is higher in nonintermediate cutting stands than that in intermediate stands. Suitable intermediate cutting adjusts many kinds of favorable factors in the ecosystem, creates better environment which is in favor of health growth of Pinus yunnanensis stands, and profits the biodiversity conservation of that. Consequently, it promotes positive cycle on stable natural control for P .yunnanensis stands against T .piniperda, and P .yunnanensis stands can be sustainable against T .piniperda.
Intermediate cutting enhances the conversion function of Pinus yunnanensis stands and defense ability of that against Tomicus piniperda. Different levels of intermediate cutting intensities for the stands have different sustainable control effects of T .piniperda. The effect of sustainable control for T .piniperda is the most significant with less and moderate less intensity of intermediate cutting. The population of T .piniperda is higher in nonintermediate cutting stands than that in intermediate stands. Suitable intermediate cutting adjusts many kinds of favorable factors in the ecosystem, creates better environment which is in favor of health growth of Pinus yunnanensis stands, and profits the biodiversity conservation of that. Consequently, it promotes positive cycle on stable natural control for P .yunnanensis stands against T .piniperda, and P .yunnanensis stands can be sustainable against T .piniperda.
2001, 18(3): 297-300.
Abstract:
The present paper deals with three new species of Mecoptera collected from Yunnan, China. All the type specimens are kept in the Zhejiang Museum of Natural History. ①Panorpa triclada sp. nov belongs to the diceras group, and it differs from P .kimminsi Carpenter by the pterostigmal band incomplete posteriorly fading abruptly behind R4, by the shape of the preepiproct.. Holotype ♂, allotype ♀, 1999-06-02, Cangshan, Yunnan. ②Neopanorpa uncinella sp. nov differs from N. menghaiensis Zhou, by the pterostigmal band complete, by the preepiproct slender, with truncated apex, by the posterior process of tergum 3 triangular in basal 1/2, slender in apical half, extending 1/2 length of tergum 4. Holotype ♂, paratype 1 ♂, 2000-06-11, Cangshan, Yunnan. ③Neopanorpa pendula sp. nov somewhat resembles N .validipennis Chenf. It differs from that species in the base lobe of dististyle flared dorsally, the expansion pendulous, in the shape of the preepiproct . Holotype ♂, 2000-06-04, Cangshan, Yunnan.
The present paper deals with three new species of Mecoptera collected from Yunnan, China. All the type specimens are kept in the Zhejiang Museum of Natural History. ①Panorpa triclada sp. nov belongs to the diceras group, and it differs from P .kimminsi Carpenter by the pterostigmal band incomplete posteriorly fading abruptly behind R4, by the shape of the preepiproct.. Holotype ♂, allotype ♀, 1999-06-02, Cangshan, Yunnan. ②Neopanorpa uncinella sp. nov differs from N. menghaiensis Zhou, by the pterostigmal band complete, by the preepiproct slender, with truncated apex, by the posterior process of tergum 3 triangular in basal 1/2, slender in apical half, extending 1/2 length of tergum 4. Holotype ♂, paratype 1 ♂, 2000-06-11, Cangshan, Yunnan. ③Neopanorpa pendula sp. nov somewhat resembles N .validipennis Chenf. It differs from that species in the base lobe of dististyle flared dorsally, the expansion pendulous, in the shape of the preepiproct . Holotype ♂, 2000-06-04, Cangshan, Yunnan.
2001, 18(3): 301-304.
Abstract:
General knowledge of topographic map is briefly introduced. Assignation of sample strip, calculation of surveying indexes such as area of sample strip,length of sample line, coordinate of the original and final site of sample line and the elevation altitude at the seat of the observed animal, and drawing of the distribution map of animal resources are described. The motive is to make more people working on wild animal acquaint with general knowledge of topographic map, and concrete application of topographic map in actual work.
General knowledge of topographic map is briefly introduced. Assignation of sample strip, calculation of surveying indexes such as area of sample strip,length of sample line, coordinate of the original and final site of sample line and the elevation altitude at the seat of the observed animal, and drawing of the distribution map of animal resources are described. The motive is to make more people working on wild animal acquaint with general knowledge of topographic map, and concrete application of topographic map in actual work.
2001, 18(3): 305-309.
Abstract:
Studies were carried out on application of more than 10 kinds of herbicides such as Gaol, Acetochlor, Butylochlor, Paraguat and Sulfometuron methyl in nursery garden, lawn and forest land. chemical herbicides should be rationally selected and applied, according to the different purpose of weed control. Herbicides, which were mixed to be applied, would make a better weed control effect. For example, if Gaol, Acetochlor, Butylochlor was added to Paraguat, respectively, the weed control effect would be better than using individually, and weed control rates were more than 91%. The sensibility of most plants is different to herbicides, so most of the herbicides can kill weed, and protect the goal plants. However, irrational application of herbicides could make goal plants to be damaged.
Studies were carried out on application of more than 10 kinds of herbicides such as Gaol, Acetochlor, Butylochlor, Paraguat and Sulfometuron methyl in nursery garden, lawn and forest land. chemical herbicides should be rationally selected and applied, according to the different purpose of weed control. Herbicides, which were mixed to be applied, would make a better weed control effect. For example, if Gaol, Acetochlor, Butylochlor was added to Paraguat, respectively, the weed control effect would be better than using individually, and weed control rates were more than 91%. The sensibility of most plants is different to herbicides, so most of the herbicides can kill weed, and protect the goal plants. However, irrational application of herbicides could make goal plants to be damaged.
2001, 18(3): 310-314.
Abstract:
The traditional viewpoint is that the immense forest externality should be eliminated by government action. While this viewpoint ignore the cost and capacity of government action. Based on analysis of the background, conditions and benefits of the eco-tourism development in Linmu, Lin,an, Zhejaing. Authors consider that forest externality can be resolved through market mechanism, with certain conditions.
The traditional viewpoint is that the immense forest externality should be eliminated by government action. While this viewpoint ignore the cost and capacity of government action. Based on analysis of the background, conditions and benefits of the eco-tourism development in Linmu, Lin,an, Zhejaing. Authors consider that forest externality can be resolved through market mechanism, with certain conditions.
2001, 18(3): 315-318.
Abstract:
Nowadays, it is very important that we carry out the protecting forests plan in China. In this paper, the authors describe a designed plan. First, the authors combine advanced computer technology with communication and the authors choose B/S mode based on C/S mode in network. Second, in order to get available data and information, the authors adopt a famous GIS software based on Internet Arc IMS and ArcInfo which is produced by ESRI. Third, the authors will offer more fast information such as of data and figure and so on for different managers who decide how to protect forest. Finally, the authors aims are to improve and construct protection forest; keep to ecosystem balanced. So the authors introduc this plan to readers and hope readers obtain help from this pape .
Nowadays, it is very important that we carry out the protecting forests plan in China. In this paper, the authors describe a designed plan. First, the authors combine advanced computer technology with communication and the authors choose B/S mode based on C/S mode in network. Second, in order to get available data and information, the authors adopt a famous GIS software based on Internet Arc IMS and ArcInfo which is produced by ESRI. Third, the authors will offer more fast information such as of data and figure and so on for different managers who decide how to protect forest. Finally, the authors aims are to improve and construct protection forest; keep to ecosystem balanced. So the authors introduc this plan to readers and hope readers obtain help from this pape .
2001, 18(3): 319-321.
Abstract:
A study was carried out to improve and help to establish the English translation ability of college students in agricultural and forestry colleges in China. The results showed that the students' ability of English translation could be greatly improved by various practices within and outside classes together with a good command of translation skill.
A study was carried out to improve and help to establish the English translation ability of college students in agricultural and forestry colleges in China. The results showed that the students' ability of English translation could be greatly improved by various practices within and outside classes together with a good command of translation skill.
2001, 18(3): 294-296.
Abstract:
Takecallis taiwanus damages on tender leaves and bamboo shoots of Phyllostachys praecox, Ph . prominens, Ph .propinqua, Saso longiligulata, etc. It has 50 generations a year in urban Lin,an of Zhejiang Province, without overwintering. Nymphal aphides have red and green, more winged females green. Its growth is closely related to the air temperature and control could be made by spraying bamboo crowns with 1 500-fold solution of cyhalothrin 2.5EC or by smearing bamboo culms with methamidophos 50EC or by smoking with dichlorvos + malathion, resulting in more than 97% of the aphides being killed.
Takecallis taiwanus damages on tender leaves and bamboo shoots of Phyllostachys praecox, Ph . prominens, Ph .propinqua, Saso longiligulata, etc. It has 50 generations a year in urban Lin,an of Zhejiang Province, without overwintering. Nymphal aphides have red and green, more winged females green. Its growth is closely related to the air temperature and control could be made by spraying bamboo crowns with 1 500-fold solution of cyhalothrin 2.5EC or by smearing bamboo culms with methamidophos 50EC or by smoking with dichlorvos + malathion, resulting in more than 97% of the aphides being killed.
