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1999年进行了BtA天霸防治小菜蛾和菜青虫的小区药效试验。结果表明 ,该药对上述二种害虫具有良好防治效果。药后 1、5天 ,80 0倍液对小菜蛾防治效果均超过 95 % ,显著高于 2 0 %杀灭菊酯 10 0 0倍 +4 0 %乐果 5 0 0倍液和BtA天霸 16 0 0倍液。 80 0、16 0 0倍液对菜青虫防治效果 ,药后 1天为 86 .90 %～ 97 6 9% ,药后 5天为 90 89%～ 10 0 % ,用 80 0倍液可同时防治小菜蛾和菜青虫 ,应用BtA天霸对无污染蔬菜生产具有重要意义
1999 BtA tyrants against the diamondback moth and cabbage caterpillar community curative effect test. The results show that the drug has a good control effect on the two pests. On the 1st and 5th day after treatment, the control efficacy on the diamondback moth was over 95% at 80 0 times, which was significantly higher than that of 20% fenvalerate at 100% + 40% dimethoate 500 times and BtA 16 0 0 times the liquid. 80 0,16 0 0 times on Pieris rapae control effect, the day after the drug was 86.90% ~ 97 6 9%, 5 days after drug 90 89% ~ 10 0%, with 80 0 times the same time control Plutella xylostella and Pieris rapae, application of BtA tyrants on non-polluting vegetable production is of great significance