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转变农业经济增长方式，走农业可持续发展道路，是我国农业发展的根本途径。合理地调整种植结构是一项投入少、见效快的发展思路。在确保粮食有余的基础上，有计划、有步骤地增加一定面积的耕地用来种植饲料作物向三元结构种植转变，是经济发展的必然。１ 三元结构种植的概念
Transforming the mode of agricultural economic growth and taking the path of agricultural sustainable development are the fundamental ways for the development of agriculture in our country. Reasonably adjust the planting structure is a less investment, quick development ideas. It is an inevitable economic development that a planned and step-by-step increase of a certain area of cultivated land used for planting fodder crops to the ternary structure is planned on the basis of ensuring sufficient grain supply. 1 ternary structure planting concept