江苏沿海地区转Bt基因抗虫棉对棉田昆虫种群的影响  

Effects of Transgenic Bt Cotton on Insect Populations in Cotton Fields in Coastal Agricultural Region of Jiangsu Province.

作　　者：徐文华[1] 刘标[2] 王瑞明 郑央萍[2] 张毅[2] 李孝刚[4] 

机构地区：[1]江苏沿海地区农业科学研究所,江苏盐城224002 [2]国家环境保护总局南京环境科学研究所,江苏南京210042 [3]江苏省盐城市植保植检站,江苏盐城224002 [4]南京林业大学森林资源与环境学院,江苏南京210037

出　　处：《生态与农村环境学报》2008年第1期32-38,共7页Journal of Ecology and Rural Environment

基　　金：江苏省自然科学基金(BK2006501);环保科研专项(200709047);公益性科研院所基本科研业务费专项;江苏省“十五”农业攻关项目(B6-101);盐城市科技发展计划项目(YK2001149)

摘　　要：2004—2005年,在江苏沿海地区采用系统调查与面上普查相结合的方法,比较分析转Bt基因抗虫棉(中棉所44)与常规棉(中棉所17)2类棉田昆虫种群的差异。结果表明,与常规棉田相比,Bt棉田棉铃虫、玉米螟、金刚钻、棉小造桥虫等鳞翅目害虫种群数量显著降低,而盲蝽象、红蜘蛛、棉蚜、烟粉虱等非靶标刺吸式害虫种群数量显著增加;蜘蛛、瓢虫等捕食性天敌种群数量显著增加,而棉铃虫的寄生性天敌种群数量则显著下降。转Bt基因抗虫棉对棉田昆虫种群的影响在数年间保持相对稳定的状态。The insect populations in the fields of insect-resistant transgenic Bt cotton （BT） and in the fields of conventional non-transgenic cotton （CV） in the coastal agricultural region of Jiangsu Province were surveyed and systematically compared in the year of 2004-2005. Results show that the insect community structure in the Bt fields differed sharply from that in the CV fields. The populations of the Lepidopterous pests, such as cotton bollworm, corn borer, diamond bollworm and cotton leaf caterpillar, decreased significantly in the BT fields, while the populations of non-target pests with piercing-sucking mouthparts, such as leaf bugs, cotton spider mites, cotton aphids and whiteflies, increased obviously. Much more predators, such as spiders and ladybirds, and much less parasitiods of Helicoverpa armigera were observed in the BT fields. The findings of the present study and others suggest that the effects of insect-resistant transgenic Bt cotton on insect population in cotton fields were relatively steady in recent years.

关 键 词：转BT基因抗虫棉 棉田 昆虫种群 

分 类 号：S562[农业科学—作物学] S186