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近年来，随着蔬菜生产中化肥、农药施用量逐年加大，造成蔬菜产品农药残留、硝酸盐及重金属等有害物质大量积累，严重影响到人民群众的身体健康。无公害蔬菜在生长过程中，不用或少用化肥、农药，使蔬菜中农药残留等有害物质几乎为零，具有新鲜、天然等特点，深受广大消费者的
In recent years, with the increase of the amount of chemical fertilizers and pesticides used in vegetable production, the pesticide residues in vegetable products and the accumulation of harmful substances such as nitrates and heavy metals have been greatly increased, seriously affecting the health of the general public. Pollution-free vegetables in the growth process, no or less fertilizers, pesticides, vegetables and other harmful substances in pesticide residues is almost zero, with fresh, natural, etc., by the vast number of consumers