本文报道了上海地区小菜蛾对几种 (类 )农药的抗性及其发展情况。小菜蛾对使用的几种类型的农药均具有抗性 ,抗性的产生与生产中农药的使用情况有密切关系 ,抗性产生的速度与农药类型有关。生物源农药和昆虫生长调节剂类农药对人类和环境比较安全 ,在生产中较受欢迎 ,使用中也应当合理用药 ,避免或减缓害虫抗性的产生与发展 This paper reports the resistance of Plutella xylostella to several kinds of pesticides in Shanghai area and their development. Plutella xylostella is resistant to several types of pesticides used. The generation of resistance is closely related to the use of pesticides in production. The rate of resistance is related to the type of pesticide. Biopesticide and insect growth regulator Pesticides are safe to humans and the environment, are more popular in production, and should be used rationally to avoid or slow down the emergence and development of pest resistance