摘要
秀山一季中稻区，白背飞虱、褐飞虱的主害峰期分别在6月底至7月中旬、8月上中旬，长达40天左右。试验长效农药扑虱灵的不同用药量对稻飞虱主害时期的控制和保产作用。结果表明，在白背飞虱虫量达到防治指标（1500头／百丛）或主害代低龄若虫高峰期施用25％扑虱灵可湿性粉剂750g／hm2，药效可维持40天左右，小区产量比不用药区增产37％左右。
The rice plantopers, Nilaparuata lugens (Stal) and Sogatella furcifera (Horvath), usuall infest rice cropheavily in kiushan County, Sichuan Province from late June through mid-august . The insecticide, buprofezin, wasused for the control of pests effectively in the field trial. The control effect lasted for 40 days after 25%buprofezin wettable powder was sprayed at the dose of 750g /hm2, at the peak of nymph population of the majorgeneration . The chemical trearment led to a 37% increase of grain yield compared to that in untreared plots.
出处
《昆虫知识》
CSCD
1996年第3期129-132,共4页
Entomological Knowledge
