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耕地是人类最基本的自然资源,而耕地的数量和质量,直接关系到人类生存和社会发展。四川是一个人均耕地少、耕地质量差、后
Cultivated land is the most basic natural resource for human beings. The quantity and quality of arable land are directly related to human survival and social development. Sichuan is a small per capita arable land, after poor quality of arable land