Field Effect Experiment on Controlling Rice Planthopper with Different Pesticides

[Objective] The study aimed to select the effective pesticides on controlling planthopper.[Method] With water as CK,the compared experiment on controlling planthopper with 5% regent suspending agent,40% chloipyrifos cream,3% acetamiprid and imidacloprid 10% WP was conducted.[Result] The control effects of 1 200 ml/hm2 and 1 050 ml/hm2 chloipyrifos were best after using pesticides for 3 and 7 days,being 76.70%,72.94%,90.88% and 86.32% respectively.The control effect of regent was highest after using for 14 days.The control effects of 3 dosages were 91.72%,85.25% and 81.01% respectively.[Conclusion] Among 4 pesticides,the control effect of chloipyrifos was best,quick and persistent.The residual effect of regent was best and the effects of acetamiprid and imidacloprid were worst.