十二种不同杀虫剂对梨小食心虫和桑白蚧的防治效果

Control effects of 12 different kinds of pesticides against Grapholitha molesta and Pseudaulacaspis pentagona

试验比较了不同类型的12种杀虫剂对梨小食心虫为害桃梢的防效和对桑白蚧的兼治效果。结果表明:35%氯虫苯甲酰胺水分散粒剂8 000倍液、10%啶虫脒微乳剂3 000倍液、1%甲维盐水剂1 500倍液、80%灭多威可溶粉剂1 500倍液具有较好的防效。240g/L螺虫乙酯悬浮剂1 000倍液防治桑白蚧效果较突出,其次为2.5g/L高效氯氟氰菊酯乳油2 000倍液、2.5%联苯菊酯乳油1 000倍液和40%毒死蜱乳油1 500倍液。氯虫苯甲酰胺、啶虫脒、甲维盐虽对梨小食心虫防效较好,但本试验发现,可能会导致桑白蚧为害加重,是值得进一步研究和探讨的问题。

The control effects of 12 different types of pesticides against Grapholitha molesta and Pseudaulacaspis pen tagona were compared. The results showed that 35 % chlorantraniliprole WG （1：8 000）, 10% acetamiprid ME （1：3 000）, 1% emamectin benzoate AS （1：1 500）, and 80% methomyl SP （1：1 500） had stable control effects. 240 g/L spirotetramat SC （1 ： 1 000） had an excellent control effect against P. pentagona, followed by 2.5 g/L lambda-cyhalothrin EC （1：2 000）, 2.5% bifenthrin EC （1：1 000）, and 40% chlorpyrifos EC （1：1 500）. This study indicated that chlorantraniliprole, acetamiprid and emamectin benzoate had better control effects against G. molesta, but might cause aggravated harms by P. pentagona, which still needs further study.