小麦纹枯病产量损失估计研究  

Estimation of yield losses caused by wheat sharp eyespot

作　　者：齐永霞[1] 丁克坚[1] 陈方新[1] 陈莉[1] 

机构地区：[1]安徽农业大学植物保护学院,合肥230036

出　　处：《植物保护》2006年第3期46-48,共3页Plant Protection

基　　金：安徽省"九五"科技攻关计划[9911005(3)];校长青年基金项目(校科字[2003]5号)

摘　　要：研究了小麦纹枯病病情指数与产量损失率及千粒重的关系。结果表明,产量损失率随着病情指数的增加而增大;千粒重随着病情指数的增加呈下降趋势,并在此基础上组建了病情指数与产量损失率的关系模型,病情指数与千粒重的关系模型。The relationship between the disease index of wheat sharp eyespot and the percentage of yield loss was studied. The results showed that the percentage of yield loss increased with the increase of disease index and the weight per kilograin decreased with the increase of disease index. On the basis of the results achieved above, the models for disease index and yield loss ratio and for disease index and weight per kilograin were established.

关 键 词：小麦纹枯病 病情指数 产量损失率 千粒重 

分 类 号：S435.121[农业科学—农业昆虫与害虫防治]