蔬菜是人民生活中必不可少的重要副食品之一,是保证人民身体健康的维生素和矿质元素的重要来源。随着国民经济的迅速发展,人民生活水平正在从温饱向小康过渡,与此同时,人们对蔬菜的消费也已进入从数量型向质量型转变的时期。对无污染的、安全、优质、营养类蔬菜的需求日益迫切。然而目前生产的蔬菜质量却不尽人意,有机磷超标、硝态氮累积严重,重金属污染、病原微生物污染等也时有发生,这些都已成为无公害 Vegetables are one of the important non-staple foods indispensable to people’s lives and are an important source of vitamins and minerals that ensure the health of the people. With the rapid development of the national economy, the standard of living of the people is shifting from adequate food and clothing to a well-off society. At the same time, people’s consumption of vegetables has also entered a period of transformation from quantity to quality. The demand for non-polluting, safe, high-quality, nutritious vegetables is increasingly pressing. However, the quality of vegetables currently produced is unsatisfactory, with excessive organic phosphorus, serious accumulation of nitrate nitrogen, heavy metal pollution and pathogenic microorganism contamination, which have also become pollution-free