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conservation reserve program in U.S.
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conservation reserve program in U.S.
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经济学
土地休耕计划
释
conservation reserve program in U.S.
美国土地休耕计划
美国迫于农产品过剩和生态环境恶化双重压力,实行部分耕地暂时退出耕种并加以保护的措施。
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