氟硅菊酯对水稻褐飞虱的生物活性及田间防治效果  

The Biological Activity and Control Effect in Field of Silafluofen to Nilaparvata lugens

作　　者：束兆林[1] 张芳[2] 庄义庆[1] 缪康[1] 赵来成[1] 吉沐祥[1] 方继朝[3] 刘宝生[3] 

机构地区：[1]江苏丘陵地区镇江农科所,江苏句容212400 [2]江苏省植保站,南京210036 [3]江苏省农业科学院植物保护研究所,南京210014

出　　处：《农药》2010年第9期689-691,共3页Agrochemicals

基　　金：江苏省农业科技创新项目子课题(cx0610806-3);镇江市农业科技攻关项目(NY2007043)

摘　　要：室内生测结果表明:氟硅菊酯对褐飞虱3龄若虫的LC50值为9.98mg/L,与吡蚜酮相比,氟硅菊酯对褐飞虱3龄若虫的LC50值是吡蚜酮的14.14倍;田间试验结果表明:氟硅菊酯具较好的速效性、持效性,药后3d,5%氟硅菊酯EC(制剂用量)1500～4500mL/hm2对褐飞虱的防治效果为76.39%～94.00%,药后21d,5%氟硅菊酯EC(制剂用量)3000～4500mL/hm2对褐飞虱的控制效果仍有73.88%～89.22%,因此从防效和经济的角度考虑,5%氟硅菊酯EC控制褐飞虱最佳制剂用量为3000～4500mL/hm2,防治适期宜在褐飞虱低龄若虫高峰期。The result of the biological activity showed that the LC50 of silafluofen against the 3rd larval of Nilaparvata lugens were 9.98 rag/L, which was 14.14 times than that of pymetrozine. The results of field test demonstrated that silafluofen had favorable quick-acting and persistent effects for controlling Nilaparvata lugens. The effect of silafluofen 5% EC at the dose of 1500-4500 mL/ha was 76.39-94.00% after 3 days, and still 73.88-89.22% after 21 days at the dose of 3000-4500 mL/ha. So silafluofen 5% EC at the dose of 3000-4500 mL/ha is recommended for controlling Nilaparvata lugens from control effect and economic point of view.

关 键 词：氟硅菊酯 褐飞虱 生物活性 防治效果 

分 类 号：S435.112.3[农业科学—农业昆虫与害虫防治]