四种杀虫剂对稻纵卷叶螟的防治效果研究

摘要

[目的]探寻有效防治水稻稻纵卷叶螟的药剂。[方法]用清水作对照,采用1.8%阿维菌素乳油450 g/hm2、40%毒死蜱乳油1 800 g/hm2、20%三唑磷乳油1 800 g/hm2和40%辛硫磷乳油1 500 g/hm2进行防治水稻稻纵卷叶螟的对比试验。[结果]施药15天后,1.8%阿维菌素乳油450 g/hm2和40%毒死蜱乳油1 800 g/hm2的防效分别为85.58%和86.80%,卷叶内有虫率均为0;40%辛硫磷乳油1 500 g/hm2的防效为79.60%,卷叶内有虫率为4.35%;20%[Objective] The aim was to select pesticides on controlling Cnaphalocrocis medinalis Guenee.[Method] With water as CK,the compared experiment on controlling Cnaphalocrocis medinalis Guenee was conducted by using 1.8% abamectin EC 450 g/hm2,40% chlorpyrifo