The first application of excessive nitrogen fertilizer can lead to a decline in the quality of the vegetables. Mainly in the increase of nitrogen fertilizer application, the content of vitamin C and soluble total sugar in vegetables will decrease significantly. Specifically, it is expressed in vegetables. For example, under high nitrogen conditions, the sugar acidity of the fruit is significantly decreased, the palatability is deteriorated, the quality is deteriorated, the soluble solids in the fruit are also decreased, and the fruit is mashed, making the tomato intolerant. Shipped. At the same time, excessive application of nitrogen fertilizer in vegetables will also significantly reduce nutrients such as magnesium in vegetables and their fruits.
Secondly, excessive application of nitrogen fertilizer can significantly increase the nitrate content in vegetables, and the nitrite ions reduced by humans after eating vegetables are harmful to the human body. Nitrite ion is a strong carcinogen and causes cancer after long-term consumption.
Huaxian Agricultural Technology Promotion Center Lu Shuguang
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