【摘要】 田间药效试验表明40%毒死蜱乳油对苹果绵蚜有良好的防治效果,稀释1500~2000倍,施药后7d的防效在95%以上,施药后21d的防效在98%以上。更多还原

【Abstract】 The results of field experiments showed that 40% chlorpyrifos EC had good effect for controlling the Eriosoma lanigerum Hausmann, Diluted to 1 500~2 000times. the efficacy was 95% after 7day and more than 98% aftter 21days.更多还原