化学杀虫剂对苏云金杆菌芽孢及伴胞晶体的影响

研究了7种常用化学杀虫剂对苏云金杆菌芽孢及伴胞晶体的影响及作用,结果表明,常用浓度下,2.5%溴氰菊酯乳油、48%毒死蜱乳油对苏云金杆菌芽孢及伴胞晶体无影响,可与苏云金杆菌制剂事先做成混剂;4.5%高效氯氰菊酯乳油、2.5%高效氯氟氰菊酯乳油、20%灭多威和40%辛硫磷在短时期内对芽孢及伴胞晶体无明显影响,可与苏云金杆菌制剂现混现用;80%敌敌畏乳油(500倍稀释)对苏云金杆菌伴胞晶体有明显损伤作用,不宜与苏云金杆菌制剂混合使用。

Effect of Some Chemical Insecticides on Bacillus thuringiensis Spore and Parasporal Crystals

The effects of seven chemical insecticides on CH strain were reported. The results of the laboratory study showed that 2.5% deltamethrin EC, 48% chlorpyrifos EC had no harmful effects and they can be made as composite preparation with Bt, 4.5% beta cypermethrin EC, 2.5% lambda cyhalothrin EC, 20% methomyl EC and 40% phoxim EC had weak harmful effects on Bt spore and they can be tank mixed with Bt for use. 80% dichlorvos was very harmful to parasporal crystals. SDS PAGE analysis and bioassay also showed the same results.