【摘要】 [目的]探索20%呋虫胺SG防治稻褐飞虱田间药效。[方法]用20%呋虫胺SG和80%中农倍利SG,探讨20%呋虫胺SG防治稻褐飞虱田间药效。[结果]田间防效比较试验显示,用20%呋虫胺SG 150、225、300、375 g/hm2防治稻褐飞虱,其田间防效药后3 d分别为53.02%、70.06%、71.73%、74.74%;药后7 d分别为68.96%、78.44%、80.19%、84.19%;药后14 d分别为75.84%、83.23%、88.32%、91.26%;药后21 d分别为72.10%、87.55%、90.46%、91.24%。[结论]20%呋虫胺SG是目前防治稻褐飞虱的理想药剂,可用20%呋虫胺SG 300 g/hm2对水675kg/hm2均匀透彻喷雾。更多还原

【Abstract】 [Objective] The aim was to explore field efficacy of 20% dinotefuran SG for controlling brown rice planthopper. [Method] The field efficacy of20% dinotefuran SG for controlling brown rice planthopper was researched,by using 20% dinotefuran SG and 80%Zhongnong BARITS SG as materials.[Result] The results of field efficiency comparison test showed that with 20%dinotefuran SG 150,225,300,375 g/hm2 preventing brown planthopper,the effectiveness in field three days after the treatment were 53.02%,70.06%,71.73%,74.74%,respectively; the effectiveness in field seven days after treatment were68.96%,78.44%,80.19%,84.19%,respectively; the effectiveness in field fourteen days after treatment were 75.84% 、83.23% 、88.32% 、91.26%,respectively;the effectiveness in field twenty-one days after treatment were 72.10% 、87.55% 、90.46% 、91.24%,respectively. [Conclusion] 20% dinotefuran SG was a ideal pharmacy for preventing and controlling brown planthopper in currently. It could uniform and thorough spray with 20%dinotefuran SG 300 g/hm2 and add water675 kg/hm2.更多还原