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我国普遍存在化肥过量施用的问题,我国耕地化肥用量已达到397.5公斤每公顷,而美国和世界化肥平均施用量小于150公斤每公顷。化肥的盲目施用造成土壤有机质含量下降,土壤养分失衡加剧,肥料的报酬率严重下降,甚至导致农产品产量与品质下降。土地犯上了严重的化肥依赖症,而且还带来了严重土壤和地下水污染,给人们健康和农业可持续发展构成严重威胁。
The widespread application of chemical fertilizers in our country is that 397.5 kilograms per hectare of cultivated land has been used in our country while the average chemical fertilizer application in the United States and the world is less than 150 kilograms per hectare. The blind application of chemical fertilizers resulted in the decrease of soil organic matter content, aggravated soil nutrient imbalance, the serious decline of the rate of return of fertilizers, and even the decrease of yield and quality of agricultural products. Land has been subjected to serious chemical-dependent diseases, but it has also caused serious soil and groundwater pollution, posing a serious threat to people’s health and sustainable agricultural development.