文献类型: 外文期刊
第一作者: Guo, YY
作者: Guo, YY
作者机构:
关键词: IPM;Helicoverpa armigera;insect resistance;Bt cotton;nontarget organisms
期刊名称:ANNUAL REVIEW OF ENTOMOLOGY ( 影响因子:19.686; 五年影响因子:20.265 )
ISSN: 0066-4170
年卷期: 2005 年 50 卷
页码:
收录情况: SCI
摘要: The development of cotton pest management practices in China has followed a pattern seen for many crops that rely heavily on insecticides. Helicoverpa armigera resistance to chemical pesticides resulted in the unprecedented pest densities of the early 1990s. Transgenic cotton that expresses a gene derived from the bacterium Bacillus thuringiensis (Bt) has been deployed for combating. H. armigera since 1997. The pest management tactics associated with Bt cotton have resulted in a drastic reduction in insecticide use, which usually results in a siagnificant increase in populations of beneficial insects and thus contributes to the improvement of the natural control of some pests. Risk assessment analyses show that the natural refugges derived from the mixed-planting system of cotton, com, soybean, and peanut on small-scale. single-family-owned farms play an important function in delaying evolution of conon bollworm resistance, and that no trend toward Bt cotton resistance has been apparent despite intensive planting of Bt cotton over the past several years.
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