水稻稻纵卷叶螟防治药效试验初报

分析了15%阿维.毒死蜱乳油(宇旺)等药剂在防治水稻稻纵卷叶螟上的效果,试验结果表明:在高龄幼虫达较高时,喷施药剂,96 h后宇旺的平均虫口减退率达到93.5%,甲杀达到91.7%,康宽达到85.2%;施药后第9天的保叶率:宇旺平均达到92.5%,甲杀达到90.1%,康宽达到85.8%,因此,在防治水稻稻纵卷叶螟上,宇旺比甲杀和康宽具有更好的效果。

Study of Pesticide Effects on Rice Leaf Rollers Prevention

The effect of some pesticides on rice leaf rollers prevention was analyzed here.The results showed that it was good to spray pesticides to control this pest insect when the population of its old larvae reached a high level.The population was decreased by 93.5% at 96 hours after spraying with Yuwang(15% Avi·Chlorpyrifos),91.7% with Jiasha,and 85.2% with Kangkuan.On the ninth day after spraying,the average rate of leaf protection was 92.5%,90.1%,and 85.8% for Yuwang,Jiasha,and Kangkuan,respectively.Our data proved that Yuwang was the best pesticide for rice leaf rollers prevention as compared with Jiasha and Kangkuan.