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小菜蛾是一种世界性害虫,研究它的人士没有一个不感到头痛。目前它已对几乎所有化学杀虫剂都产生了高抗药性,就连Bt菌剂也有抗性产生的报道,使得绝大多数杀虫剂对它丧失了控制能力。在这种情况下,菜农采用加大用药量或使用剧毒杀虫剂(剧毒农药不得用于蔬菜等作物上),鲜菜上市后时时有中毒现象发生,据了解1993年春节期间深圳一地就有上百人中毒,数人死亡,直接危害了人民身体健康。
Plutella xylostella is a worldwide pest and none of the people who study it have no headaches. At present, it has been highly resistant to almost all chemical insecticides, and reports of the resistance of even Bt bacteria have led to the loss of control by most insecticides. In this case, the vegetable farmers to increase the dosage or the use of highly toxic insecticides (highly toxic pesticides may not be used on vegetables and other crops), fresh vegetables from time to time poisoning occurred, it is understood that during the Spring Festival of 1993 in Shenzhen There are hundreds of people poisoning, killing several people, directly endangering the health of the people.