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耕地,是粮食生产的基础。在中国,占世界不到9%的耕地却养活了全球21%的人口。在创造奇迹的背后,耕地质量问题也浮出水而。为了追求粮食的高产,长期投入大量化肥造成耕地养分失衡、基础地力薄弱、连年耕种地力严重透支、生态功能变差、退化和污染加剧……承载着13亿人粮食生产重任的耕地长期处于“亚健康”状态,早已不堪重负。据全国耕地质量监测结果显示,我国耕地质量已出现不同程度的下降:东北黑土层变薄,南方土壤酸化,华北平原耕层变浅。更糟糕的是,目前我国耕地退化面积占耕地总面积的
Cultivated land is the basis of grain production. In China, less than 9% of the world’s arable land feeds 21% of the world’s population. Behind the miracle, the quality of arable land also surfaced. In order to pursue high output of grain, long-term input of a large amount of fertilizers has resulted in an imbalance of arable land, resulting in a weak foundation of basic fertility and serious overdraft of successive years of cultivation, deteriorating ecological functions, deteriorating and polluting. Arable land carrying 1.3 billion grain production tasks has long been in “ Sub-health ”status, already overwhelmed. According to the national monitoring results of cultivated land quality, the quality of cultivated land in China has been reduced to varying degrees: the black soil layer in Northeast China is thinner, the southern soil is acidified and the plow layer in the North China Plain becomes lighter. What is even worse is that at present, the area of arable land in our country accounts for the total area of arable land