| 早酥梨叶枯病危害损失与防治指标研究 |
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| 引用本文： | 张山林,陈秀蓉.早酥梨叶枯病危害损失与防治指标研究[J].甘肃林业科技,2000,25(2):14-18. |
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| 作者姓名： | 张山林 陈秀蓉 |
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| 作者单位： | 1. 临夏州森林病虫害防治检疫站,甘肃,临夏,731100
2. 甘肃农业大学植保系,甘肃,兰州,730070 |
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| 基金项目： | 甘肃省中青年基金项目!“早酥梨主要病虫害发生规律与防治技术研究”部分内容 |
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| 摘 要： | 梨叶枯病是在早酥梨上发现的一种新病害，病原菌为Ｍｙｃｏｖｅｌｌｏｓｉｅｌｌａ ｐｙｒｉｃｏｌａ。通过调查早酥梨叶枯病在田间的消长动态，实测不同病情指数下１年生早酥梨苗的高、粗生长量、７－８年生结果树平均单果重、单株产量，建立了苗期生长量和结果树产量损失估计模型，推算出该病害防治指标病指苗期为１２．７４％，结果树为１３．８４％。
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| 关 键 词： | 叶枯病 损失量 防治指标 早酥梨 |
| 文章编号： | 1006-0960(2000)02-0014-05 |
| 修稿时间： | 2000年2月25日 |
Study on losses caused by Leaf blight of pear and control index |
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| ZHANG Shan-lin,GHEN Xiu-rong.Study on losses caused by Leaf blight of pear and control index[J].Journal of Gansu Forestry Science and Technology,2000,25(2):14-18. |
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| Authors: | ZHANG Shan-lin GHEN Xiu-rong |
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| Institution: | ZHANG Shan lin 1,GHEN Xiu rong 2 |
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| Abstract: | Leaf blight of pear is a new disease that have been discovered on pear,the germ is mycovellosiella pyricola On the basis of investigation of disease progression,the heights and stem diameters of one year old trees representing growth stock,and mean single fruit weights and single tree fruits yield of seven to eight year old fruit bearing trees under different disease index.From data collected from these experiment,loss asessment model were established in growth stock for young index trees and fruit yield for fruit bearing trees.Control calculated using these models were 12.74% and 13.84% in disease index for young trees and fruit bearing trees respectively. |
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| Keywords: | Leaf blight amount of losses control thresholds |
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