首页|期刊导航|中国农业科学（英文版）|Bt Cotton in China: Are Secondary Insect Infestations Offsetting the Benefits in Farmer Fields?
中国农业科学（英文版）2009，Vol.8Issue(1)：83-90,8.
Bt Cotton in China: Are Secondary Insect Infestations Offsetting the Benefits in Farmer Fields?
Bt Cotton in China: Are Secondary Insect Infestations Offsetting the Benefits in Farmer Fields?
摘要
Abstract
The area sown to Bt cotton has expanded rapidly in China since 1997. It has effectively controlled the bollworm. However, in recent years, concern has surfaced about the emergence of secondary insect pests, particular mirids, in Bt cotton fields. This study measures the patterns of insecticide use based on farm-level from 1999 to 2006, the analysis demonstrates a rise in insecticide use to control mirids between 2001 and 2004, secondary insect infestations is largely related to the rise of mirids, but this rising did not continue in more than half of sample villages studied in 2004-2006. Moreover, the increase in insecticide use for the control of secondary insects is far smaller than the reduction in total insecticide use due to Bt cotton adoption. Further econometric analyses show that rise and fall of mirids is largely related to local temperature and rainfall.关键词
Bt cotton/secondary insect/mirid/ChinaKey words
Bt cotton/secondary insect/mirid/China分类
农业科学引用本文复制引用
WANG Zi-jun,LIN Hai,HUANG Ji-kun,HU Rui-fa,Scott Rozelle,Carl Pray..Bt Cotton in China: Are Secondary Insect Infestations Offsetting the Benefits in Farmer Fields?[J].中国农业科学（英文版）,2009,8(1):83-90,8.基金项目
The authors are grateful to the comments by Professor Wu Kongming, Institute of Plant Protection, Chinese Academy of Agricultural Sciences, and the staff of the Center for Chinese Agricultural Policy who worked so hard in collecting data. The authors acknowledge the financial support by the Chinese Academy of Sciences (KSCX2-YW-N-039) and International Development Research Center, China. （KSCX2-YW-N-039）
