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蔬菜是人们日常生活中不可缺少的重要副食品,它为人们提供各种维生素、矿物质和纤维素,但它同时又是一种天然易富集硝酸盐的作物。在正常情况下,蔬菜中吸收的硝酸盐可以经过硝酸还原酶的作用还原成为亚硝态氮,再转化成氨和氨基酸类物质,经一系列高分子合成后,以构成蔬菜的躯体和维持生命,但在条件不适宜时,特别是吸收过量时,硝酸盐不能被充分同化,
Vegetables are an important and important non-staple food for people’s daily life. They provide people with various vitamins, minerals and cellulose, but at the same time, they are also a natural nitrate-rich crop. Under normal conditions, the nitrate absorbed in vegetables can be reduced to nitrite nitrogen by the action of nitrate reductase, which is then converted to ammonia and amino acids. After a series of polymers are synthesized, the body of the vegetables and the life sustaining , But when the conditions are not suitable, especially when excessive absorption, nitrate can not be fully assimilated,