改开以后减少了4亿亩耕地,即减少了14.1%的耕地,使中华民族的粮食自足达到了危险的临18亿亩的边缘。另外改开后没修建农业水库。
改开以后减少了4亿亩耕地,即减少了14.1%的耕地,使中华民族的粮食自足达到了危险的临18亿亩的边缘。另外改开后没修建农业水库。
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