1998 Vol. 15, No. 2
1998, 15(2): 111-115.
Abstract:
Data collected from 44 Lei bamboo plots produced an average density of 1 7000 stalks per hectare and a variance coefficient of 31.1%.There is a large variation in density between each plot thus the high variance coefficient.A plantation is mulched in...
Data collected from 44 Lei bamboo plots produced an average density of 1 7000 stalks per hectare and a variance coefficient of 31.1%.There is a large variation in density between each plot thus the high variance coefficient.A plantation is mulched in...
1998, 15(2): 116-121.
Abstract:
The study was done insite selection, land preparation, seedling grades, fertilization methods, afforestation density and rotation of forest and crop, etc. The result s showed that the annual volume increments of two stands, which were at 9～ 10 years ...
The study was done insite selection, land preparation, seedling grades, fertilization methods, afforestation density and rotation of forest and crop, etc. The result s showed that the annual volume increments of two stands, which were at 9～ 10 years ...
1998, 15(2): 122-126.
Abstract:
The study was wade in the suburb o f Lin' an City , Zhejiang Province. The result showed that the soil acidity of rhizosphere under Pinus massoniana forest was much more than that of bulk. There were more organic carbon and nitrogen compound in rhizo...
The study was wade in the suburb o f Lin' an City , Zhejiang Province. The result showed that the soil acidity of rhizosphere under Pinus massoniana forest was much more than that of bulk. There were more organic carbon and nitrogen compound in rhizo...
1998, 15(2): 127-130.
Abstract:
Physio logical reaction on sulfur dioxide pollution to masson pine was determined.The results showed that masson pine was seriously hurt in the first sprout on April ,and new leaves appeared brown. The content of the chlorophyll and aoluble sugar wer...
Physio logical reaction on sulfur dioxide pollution to masson pine was determined.The results showed that masson pine was seriously hurt in the first sprout on April ,and new leaves appeared brown. The content of the chlorophyll and aoluble sugar wer...
Chinese fir: related expressions between diameter breast-high and crown width and their application.
1998, 15(2): 131-137.
Abstract:
There are 19 provenances in the Chinese fir forests of proenance test made by Forestry Research Institute of Long' quan City , Zhejiang Province. The measurement and analysis of 14 years old stands show that relationship between DBH ( x ) and crown w...
There are 19 provenances in the Chinese fir forests of proenance test made by Forestry Research Institute of Long' quan City , Zhejiang Province. The measurement and analysis of 14 years old stands show that relationship between DBH ( x ) and crown w...
1998, 15(2): 138-144.
Abstract:
The growth difference, combining ability effect , genetic variation, heritability and heterosis were studied and analyzed by use of 10. 5 years old Chinese fir progeny crossed 99 half-diallel. The results proved further that GCA played a leading role...
The growth difference, combining ability effect , genetic variation, heritability and heterosis were studied and analyzed by use of 10. 5 years old Chinese fir progeny crossed 99 half-diallel. The results proved further that GCA played a leading role...
1998, 15(2): 145-150.
Abstract:
In secondary forest s of Chinese aspes with the age of more than 15 years, the dominant tree comparative method and absolute growth method can be used in the selection of select trees. The vegetative propagation methods, including germination by embe...
In secondary forest s of Chinese aspes with the age of more than 15 years, the dominant tree comparative method and absolute growth method can be used in the selection of select trees. The vegetative propagation methods, including germination by embe...
1998, 15(2): 151-157.
Abstract:
The concepts, experimental techniques, strategies and computer software were expounded on genome mapping of forest trees. The research improvements on genome mapping in forest trees were summarized. The application value of genome map and main proble...
The concepts, experimental techniques, strategies and computer software were expounded on genome mapping of forest trees. The research improvements on genome mapping in forest trees were summarized. The application value of genome map and main proble...
1998, 15(2): 158-163.
Abstract:
The physico-mechanical properties of culm-wood of Phyllostachys iridenscens go hand in hand with ages and parts of the culm. The air shrinkage properties of the culm decreaseg radually with the age while the basic density, compression strength parall...
The physico-mechanical properties of culm-wood of Phyllostachys iridenscens go hand in hand with ages and parts of the culm. The air shrinkage properties of the culm decreaseg radually with the age while the basic density, compression strength parall...
Observation of development of female gametophyte and trend of starch grain in Liriodendron chinense.
1998, 15(2): 164-169.
Abstract:
The development of ovule and female gametophyte in Liriodendron chinense was observed by means of conventional methods. The ovule is anatropous, consisting of bitegmy ,crassinucellus, nucellar beak and hypostase. The type of embryo sacbelongs to the ...
The development of ovule and female gametophyte in Liriodendron chinense was observed by means of conventional methods. The ovule is anatropous, consisting of bitegmy ,crassinucellus, nucellar beak and hypostase. The type of embryo sacbelongs to the ...
1998, 15(2): 170-175.
Abstract:
In the present paper, three species of the genus Mycomya , collected by the author from Longwangshan Nature Reserve ( 30. 4N, 119. 4E) , Zhejiang Province, are described as new to science. They are M. copicusa , M. edentata and M. rivalisa. The type ...
In the present paper, three species of the genus Mycomya , collected by the author from Longwangshan Nature Reserve ( 30. 4N, 119. 4E) , Zhejiang Province, are described as new to science. They are M. copicusa , M. edentata and M. rivalisa. The type ...
1998, 15(2): 176-180.
Abstract:
Monochamus alternatus is widely distributed over Qiandao Lake area, causing serious injury to pine trees. The rate of pest-insect infection is 8. 4% , with a death rate o f 6. 0% . The average density is 99. 1～ 155. 8 pests perplant, and the highest ...
Monochamus alternatus is widely distributed over Qiandao Lake area, causing serious injury to pine trees. The rate of pest-insect infection is 8. 4% , with a death rate o f 6. 0% . The average density is 99. 1～ 155. 8 pests perplant, and the highest ...
1998, 15(2): 181-186.
Abstract:
Certain ancient trees and 21 species of rare plants with characteristics of littoral flora are found on Zhoushan Islands, where paleophyte and endemic species have very limited number. Usually arbors are companion or regeneration species of secondary...
Certain ancient trees and 21 species of rare plants with characteristics of littoral flora are found on Zhoushan Islands, where paleophyte and endemic species have very limited number. Usually arbors are companion or regeneration species of secondary...
1998, 15(2): 187-191.
Abstract:
In the preparation of a drink, fresh fruits of a wild plant Rubus hirsutus were used with no pigments, essences and preservatives added. The resultant product was a new ideal beverage which was natural , nutritions and healthful, particularly in colo...
In the preparation of a drink, fresh fruits of a wild plant Rubus hirsutus were used with no pigments, essences and preservatives added. The resultant product was a new ideal beverage which was natural , nutritions and healthful, particularly in colo...
1998, 15(2): 192-196.
Abstract:
Experiments on commercial production of Phalaenopsis are made. The micropropagation technology of Phalaenopsis PLB, synchronization technology of meristem clone, soilless culture, and Phalaenopsis growth are summarized. The results show that multipli...
Experiments on commercial production of Phalaenopsis are made. The micropropagation technology of Phalaenopsis PLB, synchronization technology of meristem clone, soilless culture, and Phalaenopsis growth are summarized. The results show that multipli...
1998, 15(2): 197-200.
Abstract:
Based on the analysis of rotary valve-feeding apparatus of defibrator, a design method about double rotary valve-feeding device was obtained. This paper presents that the radial feeding is improved longitudial feeding and the multilevel equilibarium ...
Based on the analysis of rotary valve-feeding apparatus of defibrator, a design method about double rotary valve-feeding device was obtained. This paper presents that the radial feeding is improved longitudial feeding and the multilevel equilibarium ...
1998, 15(2): 201-206.
Abstract:
The linear autoregression model with input variables is a comprehensive forecasting model which is superior to the conventional model for phenological forecast. It belongs to the dynamic random difference equation in structure and combines the merits...
The linear autoregression model with input variables is a comprehensive forecasting model which is superior to the conventional model for phenological forecast. It belongs to the dynamic random difference equation in structure and combines the merits...
