微生物农药对新疆棉铃虫的防治效果  

Studies on Cotton Bollworm Control with Microbial Insecticides

作　　者：李号宾[1] 姚举[1] 阿克旦.吾外士 买买提.莫明 

机构地区：[1]新疆农科院植保护所,新疆乌鲁木齐830000 [2]新疆农科院经作所,新疆乌鲁木齐830000

出　　处：《新疆农业科学》2004年第5期388-391,共4页Xinjiang Agricultural Sciences

基　　金：新疆维吾尔自治区攻关项目;新疆棉花玉米主要害虫生态调控技术研究示范(120023110).

摘　　要：对Bt杀虫剂、新棉安和生霸1号三种微生物农药在新疆棉田对棉铃虫的防治效果进行了试验。喷施微生物农药后幼虫的转移危害活动减少,生霸1号有明显的保蕾保铃效果;新棉安和Bt杀虫剂有一定的保铃效果,但受害蕾数量上升。对幼虫的杀虫效果,生霸1号最佳,其次为新棉安,而Bt杀虫剂最差。被Bt和HaSNPV感染的残存幼虫可以完成正常发育,死亡率上升缓慢,可以继续造成一定危害。棉田使用新棉安和生霸1号,喷药当时到24h后均可保持很高杀虫效果,而48h后效果明显下降,72h后效果急剧下降。Field and laboratory tests were conducted to evaluate the effectiveness of one Bt insecticide and two HaSNPV-based insecticides, Xinmianan and Shengba 1, against cotton bollworm in 1997, in Shache county, Xinjiang Province. The spray of these microbial insecticides caused reductions in the transferring activity of larvae and in the number of damaged cotton reproductive organs. Shengba 1 provided good protection to both squares and bolls (including flowers), while Bt insecticide and Xinmianan only gave protection to bolls (including flowers) in some degree. To depress the number of larvae, Shengba 1 is best, Xinmianan is second, Bt insecticide is poor. The infected survival larvae can finish development normally, with their mortality increased slowly, therefor they can still do some damages. The effectiveness of Shengba 1 and Xinmianan can maintain high effect to kill the cotton bollworm in 24h, then decrease obviously 48h, and sharply 72h after spraying in cotton field.

关 键 词：微生物农药 新疆 棉铃虫 药效试验 BT杀虫剂 新棉安 生霸1号 生物防治 

分 类 号：S435.622.3[农业科学—农业昆虫与害虫防治] S482.3[农业科学—植物保护]