Biosafety management and pesticide use in China's Bt cotton production
研究发现中国农民广泛使用未经生物安全认证的Bt棉花品种，而获得认证的品种在减少农药使用方面表现更好，为政策制定提供参考。
As the rapid development of Genetically Modified crops, Chinese government has been increasing its efforts in GM crop biosafety management. However, the rapid expansion of Bacillus thuringiensis (Bt) cotton varieties and less regulated seed industry also resulted in a large amount of Bt cotton varieties that bypassed China's biosafety regulations. This study shows that the Bt cotton varieties without biosafety certificates (BC) have been widely used by farmers in practice. Econometric analysis further shows that the Bt cotton varieties with BC outperform the varieties without BC in terms of pesticide use. The paper concludes with policy implications.