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一、资源环境需要政策保护。与其他产业相比,粮食生产的比较效益低,若是政府放任不管任由市场调节,必然导致耕地、水等资源向城镇、非农产业和非粮作物流动,进而威胁到国家粮食安全。
First, resources and environment need policy protection. Compared with other industries, the relatively low benefit of food production, if left unchecked by the government, will inevitably lead to the flow of arable land, water and other resources to urban areas, non-agricultural industries and non-grain crops, thus threatening the national food security.