灭幼脲防治大袋蛾幼虫试验初报

Preliminary Report on Control of Mieyouniao on Cryptothelea variegata

采用新型的生物杀虫剂--20%灭幼脲胶悬剂对林木及农作物害虫大袋蛾进行了防治试验,结果表明,在大袋蛾幼虫2～3龄前用1000～2000倍20%灭幼脲胶悬剂喷雾防治效果最佳.

Experiment of new biological pesticide: 20% mieyouniao on Cryptothelea variegata demonstrated that 1000-2000 fold 20% miyouniao applied before 2-3 instar had the best effect.