3种药剂防治水稻稻飞虱药效试验

Efficacy trial of three pesticides on rice planthopper

摘要: 2017年进行80%烯啶·吡蚜酮水分散粒剂、80%噻虫·吡蚜水分散粒剂、25%吡蚜酮水分散粒剂防治稻飞虱药效试验，结果表明：每667 m²施用80%烯啶·吡蚜酮水分散粒剂8 g、80%噻虫·吡蚜水分散粒剂7 g的2个处理防治水稻稻飞虱持效性均较好且安全无药害，药后7 d校正防效分别为88.4%、92.2%，药后14 d校正防效分别为89.8%、91.3%；25%吡蚜酮水分散粒剂30 g处理的防效略差。生产上可轮换使用80%烯啶·吡蚜酮水分散粒剂和80%噻虫·吡蚜水分散粒剂防治水稻稻飞虱。

Abstract: Efficacy trial of 80% Nitenpyram·Pymetrozine WG, 80% Thiamethoxam·Pymetrozine WG, 25% Pymetrozine WG on rice planthopper was conducted. The results showed that application of 8 g 80% pymetrozine·nitenpyram WG and 7 g 80% Thiamethoxam·Pymetrozine WG per 667 m² could effectively control rice planthopper with long persistence and was safe for rice growth, the adjusted control efficiency for which were 88.4% and 92.2% respectively after 7 days, and 89.8% and 91.3% after 14 days. The control efficacy of 30 g 25% Pymetrozine WG was lower. Therefore, in rice production, it was suggested to alternately apply 80% Nitenpyram·Pymetrozine WG and 80% Thiamethoxam·Pymetrozine WG for rice planthopper control.