烯啶虫胺防治水稻褐飞虱的药效评价

Pesticide efficacy evaluation on nitenpyram to control of rice brown plant hopper

进行烯啶虫胺防治水稻褐飞虱的小区试验及大田示范试验,结果表明:每667 m2使用50%烯啶虫胺可溶性粒剂4 g能有效控制水稻褐飞虱,其防治褐飞虱的速效性与持效性均显著优于常用药剂25%吡蚜酮可湿性粉剂、25%噻虫嗪水分散粒剂和100g/L乙虫腈悬浮剂,且对水稻安全;示范区比对照区稻谷产量高6.2%;建议烯啶虫胺与当地普遍使用的稻飞虱防治剂丁硫克百威·吡虫啉交替轮换使用。

In this paper,plot and field demonstration experiment of applying nitenpyram to control rice brown plant hopper were carried out. The results showed that 4 g 50% nitenpyram SG per 667 m2 could control rice brown planthoppe efficiently. Its fast-acting and persistence efficacy were significantly higher than 25% pymetrozine WP,25% thiamethoxam WDG and 100 g / L ethiprole SC,being safe for rice growth. The yield of rice in demonstration area was 6. 2% higher than that in control area. So,it was suggested that nitenpyram and carbosulfan-imidacloprid could be alternately used to control rice brown plant hopper.