Field experiment shows that λ-cyhalothrin mixed with Acetamiprid,Imidacloprid and Abamectin can achieve above 85% control effect within 3 days after application,apparently higher than the single use of λ- cyhalothrin.Even after 7 days of application,the control effect is still above 80%. λ-cyhalothrin mixed with Abamectin can also achieve better control effect than its single use.But the control effect last not long,with control...