从粮食供需状态的角度阐述退耕还林还草政策来源。依据农民对坡耕地生存的依赖性以及劣等地的经济特性,论证了政策实施的困难,从而提出尽快推行停耕封山补粮政策。根据经济全球化规律,论述了西部经济发展的劣势,提出了运用“税收”杠杆使西部经济发展,吸纳退耕后的剩余劳动力,彻底避免复耕。 Explain the Policy Source of Returning Farmland to Forest and Grassland from the Perspective of Food Supply and Demand. According to the dependence of peasants on the survival of sloping arable land and the economic characteristics of inferior land, the difficulties of policy implementation were demonstrated, and the policy of stopping and avening the mountain and supplementing grain as soon as possible was put forward. According to the law of economic globalization, this paper discusses the disadvantages of the economic development in the western region and proposes to use the “tax” lever to make the economic development in the western region absorb the surplus labor force after returning farmland and completely avoid the re-cultivation.