几种植物浸出液对菜青虫的田间防治效果  

Controlling Effect of Several Plant Extracts on Pieris rapae in the Field

作　　者：鲍方印[1] 李红[1] 王松[1] 高林[1] 蔡华[1] 陆晓明[1] 李勇[1] 

机构地区：[1]安徽技术师范学院应用生物系,安徽凤阳233100

出　　处：《合肥联合大学学报》2002年第4期98-102,共5页

摘　　要：开发利用天然杀虫剂是当今科学界热点的课题之一。本试验采用苦楝、黄花蒿、银杏等三种植物浸出液对菜青虫进行田间防治。试验表明 ,三种植物浸出液对菜青虫的田间防治效果随着自身浓度的升高而升高 ,其中 ,苦楝 4倍液对菜青虫的防治效果最好 ,药后 1、2、3天的防效分别达 88.7%、87.9%和 88.7%。其他The experiment was to measure the controlling effect with the extracts from Meliaazedrach Linn,Artemisia annua Linn and Ginkgo biloba on Pieris rapae in the field. Four kinds of density were set on every plant. Results indicated that with the concentration of extract increasing,the control effect improved. Expecially the 4 times solution of Meliaazedrach Linn had the best controlling effect,and 1d,2d,3d after spraying,the effect rose to 88.7%,87.9%and 88.7%, respectively.The effect of other extracts were significant as well.

关 键 词：天然杀虫荆 植物浸出液 菜青虫 防治效果 

分 类 号：S482.1[农业科学—农药学]