无公害蔬菜是严格按照无公害蔬菜生产安全标准和栽培技术生产的无污染、安全、优质、营养型蔬菜,并且,蔬菜中农药残留、重金属、硝酸盐、亚硝酸盐及其它对人体有毒、有害物质的含量控制在法定允许限量之内,符合有关标准规定。具体的讲,就是在蔬菜栽培过程中,以采用农业综合防治措施为主,减少或不用高残留农药,配以微生物农药、天敌和寄生性昆虫进行病虫害防治,科学合理施用肥料,使蔬菜产品中有害物质的含量达到国家规定的卫生标准,在外观上要 Pollution-free vegetables are pollution-free, safe, high-quality and nutrition-based vegetables that are produced in strict accordance with the safety standards for pollution-free vegetable production and cultivation techniques. Pesticide residues, heavy metals, nitrates, nitrites and other toxic and harmful substances The content of the substance is controlled within the statutory allowable limits and meets the relevant standards. Specifically speaking, in the process of vegetable cultivation, comprehensive agricultural prevention and control measures should be adopted to reduce or eliminate the use of high-residue pesticides, together with microbial pesticides, natural enemies and parasitic insects to control pests and diseases. Scientific and rational application of fertilizers to make vegetable products The content of harmful substances to meet the health standards set by the state, in appearance