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.
出处
《江西农业大学学报》
CAS
CSCD
1995年第4期432-438,共7页
Acta Agriculturae Universitatis Jiangxiensis
关键词
豆荚暝
为害损失率
Eticlla zinckenella Treitiscke
damage percentage
