豆荚螟为害损失率研究  

A STUDY ON THE DAMAGE PERCENTAGE BY ETIELLA ZINCKENELLA TREITSCKE

作　　者：蒋佩兰[1] 杨志华 刘晓芬[1] 习平根 章德英 

机构地区：[1]江西农业大学农学院,吉安地区农科所

出　　处：《江西农业大学学报》1995年第4期432-438,共7页Acta Agriculturae Universitatis Jiangxiensis

摘　　要：采用大田抽样实测与人工模拟为害损失的方法，得出豆荚螟对春、秋大豆的为害损失表现为：（１）随虫株、虫荚及虫粒率的提高，其损失亦随之加重；（２）虫株相当，损失则随虫荚增加而加重；（３）虫株、虫荚均相当，损失则随籽粒被害程度加重而加重。据此，建立了春、秋大豆豆荚螟为害率与损失率的回归预测式。Adopting the method of factual sampling test in the fields and artificial imitating damage,the study on the damage by EtiElla zinckenella Treitscke to the spring & fall soja was carriedout.The results showed:(1)The damage increased with the percentage of insect- invadedplants,legumens and seeds.(2)The damage increased with the percentage of insect-invadedlegumens when the insect-invaded plants were the same.(3 )The damage increased with in-sect-invaded seeds when the insect-invaded plants and legumens were the same.Based on these results the regression forecast model of harm percentage and damage per-centage by Etiella zinckenella Treitscke to spring & fall soja was established.

关 键 词：豆荚暝 为害损失率 

分 类 号：S435.651[农业科学—农业昆虫与害虫防治] S433.4[农业科学—植物保护]