摘要
灰飞虱和褐飞虱是为害海安县水稻的主要飞虱种群,近年来有加重发生的趋势,目前大部分药剂对其已产生较明显的抗性。10%乙虫腈和25%吡蚜酮是目前防治这两种飞虱比较理想的药剂,10%乙虫腈SC使用剂量为60～75ga.i./hm2时,其对褐飞虱20d的防效保持在85%以上,而当25%吡蚜酮WP使用剂量为75～93.75ga.i./hm2时,其对灰飞虱和褐飞虱均具有较好的持效性。
Brown paddy plant hopper and small brown rice plant hopper are the main harmful hopper groups at this region, and their detrimental trend is increasingly serious. These insects have developed resistance to most insecticides used in the past. Currently, ethiprole 10% SC and Pymetrozine 25% WP are relative ideal insecticides against these two kinds of plant hoppers. The control effect of Ethiprole 10% SC at application rate of 60-75 g a.i./hm^2 against the small brow rice pant hopper was more than 85%. The control effect of Pymetrozine 25% WP at the application rate of 75-93.75 g a.i./hm^2 showed good efficiency against both brown paddy plant and brown rice plant hopper.
出处
《农药研究与应用》
2009年第2期22-24,共3页
Agrochemicals Research & Application
关键词
乙虫腈
吡蚜酮
稻飞虱
效果评价
ethiprole
pymetrozine
rice flies louse
efficacy
