摘要
为了探明不同吡蚜酮制剂对褐飞虱的控制效果及其应用技术,2013年开展了3种吡蚜酮制剂防治褐飞虱试验。结果表明:50%吡蚜酮WG和25%吡蚜酮WP制剂用量分别为300,600g/hm2时,药后28 d,防效大于88%,显著高于50%吡蚜酮WP的防效64.97%;这2种制剂的持效期长达30 d。
In order to find out control effects of pymetrozine formulations on brown planthopper and their applications, field trials were carried out in 2013. The results showed that the control effects of pymetrozine 50% WG 300 g/hm2, pymetrozine 25% WP 600 g/hm2 were above 88% on the 28th day after spraying, and had significantly differences with pymetrozine 50% WP. And the persistent efficacy periods of the two formulations were longer than that of pymetrozine 50% WP.
出处
《现代农药》
CAS
2014年第5期53-54,共2页
MODERN AGROCHEMICALS