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研究证明,科学地对蔬菜使用微肥是降低蔬菜中强致癌物硝酸盐含量的最有效措施。蔬菜生产上一般微肥的安全用量:(1)667平方米硫酸亚铁的土壤施用量
Studies have shown that the scientific use of trace fertilizers on vegetables is the most effective measure to reduce the nitrate content of vegetables in strong carcinogens. Safe usage of general micronutrients in vegetable production: (1) Soil application amount of 667 square meters of ferrous sulfate