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以川中丘陵区的遂宁市市中区为试验基点，研究在满足人口最高峰值时对粮食需求的基础上，开发适度比例种植纯粮的坡耕地为经济林粮立体种植。对挑粮、桔粮、油粮、桑粮四种不同经济林粮立体种植模式，研究其实用技术，以及不同经济林粮立体种植模式与纯粮常规种植的效益比较。通过实测资料的分析评价，无论是生态效益，经济效益及水土保持的综合效益都十分显著。
Taking Suining City Midtown as a starting point, this paper studied the demand for grain in meeting the peak peak of the population, and developed a three-dimensional cultivation of economic forest grain for the purpose of developing a suitable proportion of pure grain for cultivation. To compare the benefit of four kinds of economic forest grain planting modes of picking grain, orange grain, oil grain and mulberry grain, and studying its practical technology and the three-dimensional planting mode of different economic forest grain and pure grain conventional planting. Through the analysis and evaluation of measured data, both the ecological benefits, economic benefits and comprehensive benefits of soil and water conservation are significant.