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大连地区人口密度大,地形为丘陵山地,退耕还林造林多用单行宽行距、双(多)行窄带宽带间距农林间作模式及片林大密度2×2、中密度4×4、小密度6×6等模式。大密度模式抚育管理简便,投入少,但林分质量较差,需间伐抚育,前期蓄积量虽大,但小径材较多。中小密度适中,农林间作可3￣5a。宽行带间距模式前期农林间作收益较高,后期减少,间作可大于5a,且大径材收获较多。
Large population density in Dalian, the terrain as hilly and mountainous areas, the conversion of cropland to forest multi-purpose single row wide row spacing, double (multiple) narrow band spacing with agro-intercropping mode and forest high density 2 × 2, medium density 4 × 4, small density 6 × 6 and other modes. Large density tending management is simple, less investment, but the poor quality of the stands, requiring thinning and tending, although the volume of pre-accumulation, but more small-diameter timber. Medium and medium density, intercropping agriculture and forestry can be 3 ~ 5a. Wide strip spacing model pre-agriculture income intercropping higher, later reduced intercropping can be greater than 5a, and large diameter timber harvest more.