生物杀虫剂防治棉铃虫试验研究

Effect of Biological Insecticides on Controlling Cotton Bollworm,Heliothis arnigera Hubner.

应用Ｂｔ乳悬剂、可湿性粉剂、悬浮剂和棉烟灵（棉铃虫ＮＰＶ病毒）乳悬剂于棉铃虫产卵盛期施药防治棉铃虫均有较好的杀虫保顶效果，能有效保护棉田自然天敌种群繁演，是棉虫综合防治中的一项重要措施。

The satisfied effect of killing the cotton bollworm and protecting the main shoots of plants was observed by using the B.t. suspoemulsion,WP,suspension and Mianyanlin (preparation of NPV of cotton bollworm) suspoemulsion.The application of all these biological insecticides could effectively conservate the development of the natural enemies in cotton field and was considered as an important measure in the IPM of cotton insect pests.