摘要
应用灭幼脲Ⅲ号（胶悬剂、粉剂。增效型粉剂）和白僵菌的混合剂防治马尾松毛虫，经室内试验和林间毒力测定，确定其防治效果好的最佳配比为：白僵菌高含量孢子粉(1200 亿／ｇ）４５g/hm^2与２５％灭幼脲Ⅲ号粉剂 ２２５ｇ／ｈm^2混合；其林间大面积防治马尾松毛虫，当代虫口减退率达９８％以上。该混合剂使用方便，适宜各种林地应用，不杀伤天敌，不污染环境，在药效和天敌等因子的作用下，连续３年共１２个世代试验地内处于低虫口状态，有效地控制了松毛虫灾害，可大面积推广应用。
In the trials, Dimilin ffl (hereafter referred to as D), Beauveria bassuzna (hereafter referred to as B) and their mixture were used to control Dendrotimus puncta:us. By indoor test and forest toxicity test, the mixture of B (120 billions/g, 45 g/hm2) and D (25%, 225g/hm2) was considered the best. The decrement of existent generation population was up to 98%. Other advantages include: easy to use, no affect to the natural enemies, environmental friendly and so on. In the test forest, low population density for 3 years including 12 generations was recorded. To extend the use of D and B mixture in practice is suggested.
出处
《广东林业科技》
2000年第3期21-27,共7页
Forestry Science and Technology of Guangdong Province
关键词
灭幼脲Ⅲ号
白僵菌
剂型
防治效果
马尾松毛虫
Dimilin Ⅲ, Beauteria bassiana, Control effect, Dendrohrnus Punctatus
