蔬菜硝酸盐污染及其防治途径的探讨

Nitrate pollution in vegetable and its control

蔬菜是一种容易富集硝酸盐的作物 ,人体摄入的硝酸盐 81.2 %来自蔬菜 ,而硝酸盐是强致癌物———亚硝胺的前体。为了获得高产 ,过量施用氮肥 ,导致硝酸盐积累、蔬菜品质下降。介绍了硝酸盐的国际国内的食用标准 ,硝酸盐在植物体内的同化以及积累机制 ;并探讨了蔬菜受硝酸盐污染的影响因素及控制对策。

Vegetables are the crop that can easily enrich nitrate: 81.2% of nitrate that human body takes in comes from the vegetables. In order to obtain a high yield of the vegetables, farmers now excessively apply chemical nitrogenous fertilizer, resulting in a drastic in crease in nitrate accumulation and vegetable quality deteriorated. This text introduces international and domestic food sanitation standard of nitrate, the assimilation in the plant body of nitrate and accumulation mechanism, factors influencing the nitrate pollution and control in vegetables were discussed