1 无公害蔬菜生产的必要性近年来,保护地面积的大发展为保证蔬菜的供应起了很大的作用,但也为蔬菜病虫害提供了越冬和滋生的场所,使大量病菌虫卵得以周年循环,致使病虫害问题日益突出。因此在生产中便出现大量、频繁地使用化学农药,破坏了菜田生态环境,天敌种群衰落,病虫产生抗药性。为了确保产量,又不得不加大农药用量,从而形成恶性循环,造成农产品中农药的残留量严重超标,危害人类健康。特别是夏季的速生叶菜类,人们几乎有一种谈菜色变的味道。随着人们生活水平的提高,人们对生活质量的要求也不断提高,其中食品质量特别是人们天天吃的蔬菜质量更引起广泛的关注。因此,开发 1 Necessity of pollution-free vegetable production In recent years, the great development of the protected area has played a significant role in ensuring the supply of vegetables, but also provides an overwintering and breeding place for vegetable pests and diseases, and enables annual cycles of a large number of bacteria , Resulting in the pest and disease problems become increasingly prominent. Therefore, in production there will be a large number of frequent use of chemical pesticides, destroyed the ecological environment of vegetable fields, natural enemy population decline, pest insects produce resistance. In order to ensure the output, but also have to increase the amount of pesticides, resulting in a vicious cycle, resulting in serious excessive pesticide residues in agricultural products, endangering human health. Especially in the summer fast-growing leafy vegetables, people almost have a taste of the dishes changed. With the improvement of people’s living standards, the quality of life has also been constantly increasing. Among them, the quality of food, especially the quality of vegetables that people eat every day, has drawn more and more attention. Therefore, development