害虫是农业生产的大敌,防治害虫是保证丰产的关键之一。近三十年来农药发展极其迅速,不少地区几乎成了独一无二的防治方法。不容否认,化学农药有许多优点,但事物都是一分为二的,也必须看到其缺点。现在农药的缺点越来越暴露,如影响人的身体健康,不仅有急性中毒,而且更严重的是慢性中毒。如日本人如中含有六六六,头发中含有 Pest is the enemy of agricultural production, pest control is one of the keys to ensure high yield. In recent thirty years, the development of pesticides has been extremely rapid. In many areas, it has become almost a unique prevention and cure method. Can not be denied that chemical pesticides have many advantages, but things are divided into two, we must also see its shortcomings. Now the shortcomings of pesticides more and more exposed, such as affecting people’s health, not only acute poisoning, but also more serious chronic poisoning. If the Japanese contain six hundred sixty-six, hair contains