目前,对于蔬菜病虫害,人们常采用化学农药来防治。但是,绝大多数农药有毒,加之蔬菜使用农药时间长,数量大,受农药污染的机会多,已成为社会的一大公害。因此,生产无农药污染的“无公害”蔬菜,保障人民健康已成为亟待解决的课题。就目前条件而言,工业“三废”的污染虽然难以全面 At present, people often use chemical pesticides to control pests and diseases of vegetables. However, the vast majority of pesticides are poisonous. In addition, pesticides used in vegetables for a long time and in large quantities have many opportunities for pesticide contamination and have become a major public hazard in the society. Therefore, the production of “pollution-free” vegetables without pesticide pollution and the protection of people’s health have become urgent issues to be solved. As far as the present conditions are concerned, the pollution of industrial “three wastes” is difficult to be comprehensive