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丘陵旱作区农业产业结构优化模式的研究吴明根，张哲鸿，李宗铁，郑哲（延边农学院，１３３４００）ＢｒｅｅｄｉｎｇＳｔｒｕｃｔｕｒａｌＯｐｔｉｍｉｚｉｎｇＭｏｄｅｌｏｆＵｐｌａｎｄＡｇｒｉｃｕｌｔｕｒｅｉｎＭｏｕｎｔａｉｎｏｕｓＲｅｇｉｏｎ￥．ＷｕＭｉｎｇｇｅｎ；ＺｈａｎｇＺｈｅｈｏｎｇ；ＬｉＺｏｎｇｔｉｅ；ＺｈｅｎｇＺｈｅ（ＹａｎｂｉａｎＡｇｒｉｃｕｌｔｕｒａｌＣｏｌｌｅｇｅ，ＪｉｌｉｎＰｒｏｖｉｎｃｅ１３３４００）．ＣｈｉｎｅｓｅＪｏｕｒｎａｌｏｆＥｃｏｆｏｇｙ，１９９３，１２（２）：４９－５０．Ｏｎｔｈｅｂａｓｉｓｏｆｒａｔｉｏｎａｌｄｉｓｔｒｉｂｕｔｉｏｎｏｆｆｏｒｅｓｔ，ｇｒａｓｓｌａｎｄａｎｄｆｒｕｉｔｇａｒｄｅｎｉｎａｇｒｏｅｃｏｓｙｓｔｅｍ，ｔｈｅａｇｒｏｅｃｏ－ｌｏｇｉｃａｌｅｎｖｉｒｏｎｍｅｎｔｏｆｈｉｌｌｙｕｐｌａｎｄｃｒｏｐｐｉｎｇａｒｅａｉｓｉｍｐｒｏｖｅｄｂｙｒｅａｄｊｕｓｔｉｎｇｌａｎｄｕｔｉｌｉｚａｔｉｏｎｓｔｒｕｃｔｕｒｅ，ｅｘ－ｐａｎｄｉｎｇｖｅｇｅｔａｔｉｖｅｌａｎｄａｒｅａａｎｄｏｐｔｉｍｉｚｉｎｇｂｒｅｅｄｉｎｇｓｔｒｕｃｔｕｒｅ．Ｎｏｎｅ—ｐｒｏｄｕｃｔｉｖｅｏｕｔｐｕ
Study on Optimization Model of Agricultural Industrial Structure in Hilly and Dry Areas Wu Minggen, Zhang Zhehong, Li Zongtie, Zheng Zhe (Yanbian College of Agriculture, 133400) BreedingStructuralOptimizingModelofUplandAgricultureinMountainousRegion ¥. Wu Minging; Zhang Zhong; Li Zongtie; Zheng Zhe (Yanbian Agricultural Collige, Jilin Province133400). Chinese Journal of Ecofogy, 1993, 12 (2): 49-50. Onthebasisofrationaldistributionofforest, grasslandandfruitgardeninagroecosystem, theagroeco-logicalenvironmentofhillyuplandcroppingareaisimprovedbyreadjustinglandutilizationstructure, ex-pandingvegetativelandareaandoptimizingbreedingstructure. None-productiveoutpu