Relationship between <em>Valsa sordida</em> and abnormal coldness in spring

YU Hai-ying; CHAI Shou-quan; ZHOU Yu-jiang; ZHAO Jun

doi:10.11833/j.issn.2095-0756.2011.06.015

Volume 28 Issue 6

Dec. 2011

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Article Navigation > Journal of Zhejiang A&F University > 2011 > 28(6): 927-930

YU Hai-ying, CHAI Shou-quan, ZHOU Yu-jiang, ZHAO Jun. Relationship between Valsa sordida and abnormal coldness in spring[J]. Journal of Zhejiang A&F University, 2011, 28(6): 927-930. doi: 10.11833/j.issn.2095-0756.2011.06.015

Citation:

YU Hai-ying, CHAI Shou-quan, ZHOU Yu-jiang, ZHAO Jun. Relationship between Valsa sordida and abnormal coldness in spring[J]. Journal of Zhejiang A&F University, 2011, 28(6): 927-930. doi: 10.11833/j.issn.2095-0756.2011.06.015

Relationship between Valsa sordida and abnormal coldness in spring

doi: 10.11833/j.issn.2095-0756.2011.06.015

1.
General Station of Forest Pest Management，State Forestry Administration，Shenyang 110034，Liaoning，China;
2.
Test Forest Centre of Liaoning Province，Qingyuan 113311，Liaoning，China

Publish Date: 2011-12-20

Abstract

Abnormal coldness in spring from 1997 to 2010 in Liaoning was classified into four levels of low-grade，secondary-grade，third-grade and serious in this paper. The relationship between the incidence of Valsa sordida and the different level of abnormal coldness in spring was also analyzed. The results showed that there was positive correlation between the total area of disease and abnormal coldness in spring （P＜0.05），the same positive correlation with the moderate and serious disease area （P＜0.01），and no significant level was achieved with the mild disease area （P＞0.05）. There was negative correlation between abnormal coldness in spring and the mild disease incidence rate （P＜0.01） and positive correlation with the moderate and severe disease incidence rate （P＜0.01）. The year of severe abnormal coldness in spring matched with large acreage disease incidence of Valsa sordida and the more severe the coldness，the more obviously the acreage and incidence of moderate and serious disease increased. ［Ch，4 tab. 10 ref.］
- forest protection,
- abnormal coldness in spring,
- Valsa sordida,
- epidemic area,
- disease incidence,
- Liaoning Province

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通讯作者: 陈斌, bchen63@163.com

1.
沈阳化工大学材料科学与工程学院沈阳 110142

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Relationship between Valsa sordida and abnormal coldness in spring

1. General Station of Forest Pest Management，State Forestry Administration，Shenyang 110034，Liaoning，China;

2. Test Forest Centre of Liaoning Province，Qingyuan 113311，Liaoning，China

Publish Date: 2011-12-20

Key words:

Abstract: Abnormal coldness in spring from 1997 to 2010 in Liaoning was classified into four levels of low-grade，secondary-grade，third-grade and serious in this paper. The relationship between the incidence of Valsa sordida and the different level of abnormal coldness in spring was also analyzed. The results showed that there was positive correlation between the total area of disease and abnormal coldness in spring （P＜0.05），the same positive correlation with the moderate and serious disease area （P＜0.01），and no significant level was achieved with the mild disease area （P＞0.05）. There was negative correlation between abnormal coldness in spring and the mild disease incidence rate （P＜0.01） and positive correlation with the moderate and severe disease incidence rate （P＜0.01）. The year of severe abnormal coldness in spring matched with large acreage disease incidence of Valsa sordida and the more severe the coldness，the more obviously the acreage and incidence of moderate and serious disease increased. ［Ch，4 tab. 10 ref.］

Relationship between Valsa sordida and abnormal coldness in spring

doi: 10.11833/j.issn.2095-0756.2011.06.015

Abstract

References

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通讯作者: 陈斌, bchen63@163.com

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Relationship between Valsa sordida and abnormal coldness in spring

doi: 10.11833/j.issn.2095-0756.2011.06.015

1. General Station of Forest Pest Management，State Forestry Administration，Shenyang 110034，Liaoning，China;

2. Test Forest Centre of Liaoning Province，Qingyuan 113311，Liaoning，China

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Relationship between Valsa sordida and abnormal coldness in spring

doi: 10.11833/j.issn.2095-0756.2011.06.015

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通讯作者: 陈斌, bchen63@163.com

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Relationship between Valsa sordida and abnormal coldness in spring

doi: 10.11833/j.issn.2095-0756.2011.06.015

1. General Station of Forest Pest Management，State Forestry Administration，Shenyang 110034，Liaoning，China; 2. Test Forest Centre of Liaoning Province，Qingyuan 113311，Liaoning，China

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1. General Station of Forest Pest Management，State Forestry Administration，Shenyang 110034，Liaoning，China;

2. Test Forest Centre of Liaoning Province，Qingyuan 113311，Liaoning，China