不同药剂对水稻纵卷叶螟的防治效果

目的]为了探寻有效防治水稻纵卷叶螟的药剂及组合。方法]用清水作为对照(CK),采用48%毒死蜱EC 1 500 ml/hm2、2%阿维菌素EC600 ml/hm2、25%唑磷.毒死蜱EC1 500 ml+2%阿维菌素EC300 ml/hm2、50%毒.乙酰甲EC1 200 ml/hm2、25%唑磷.毒死蜱EC1 500 ml/hm2、50%敌.氟腈EC1 500 g/hm2进行防治水稻纵卷叶螟的对比试验。结果]施药4 d后,以48%毒死蜱EC1 500 ml/hm2的防效最高,7 d和13 d后,以25%唑磷.毒死蜱EC1 500 ml+2%阿维菌素EC300 ml/hm2防效最佳,杀虫总效果和保叶效果均尤其突出。结论]6种药剂均对水稻纵卷叶螟具有一定防治效果,且以25%唑磷.毒死蜱EC 1 500 ml+2%阿维菌素EC300 ml/hm2防效最为明显。

The Control Effects of Different Pesticides on Cnaphalocrocis Medinalis Guenee

Objective] The study aimed to select pesticides and combinations on controlling cnaphalocrocis medinalis guenee.Method] With water as CK,the compared experiment on controlling cnaphalocrocis medinalis guenee 48% chlorpyrifos EC 1 500 ml/hm2,2% avermectin EC 600 ml/hm2,25% triazophos · chlorpyrifos EC 1 500 ml+2% avermectin EC 300 ml/hm2,50% chlorpyrifos·acephate EC 1 200 ml/hm2,25% zuolin · chlorpyrifos EC 1 500 ml/hm2,50% trichlorphon·fipronil EC 1 500 g/hm2.Result] The controlling of 48% chlorpyrifos EC 1 500 ml/hm2 was the best combination after using 4 d,25% triazophos· chlorpyrifos EC 1 500 ml+2% avermectin EC 300 ml/hm2 was the best combination after using 7 d,13 d,and its insecticidal total effect and protecting effect of leaves were especially outstanding.Conclusion] The six group of pesticides have controlling effect,the effect of 25% triazophos· chlorpyrifos EC 1 500 ml+2% avermectin EC 300 ml/hm2 was best combination.