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一、树种选择。①选择旱生树种。阔叶树种有:栾树、槲树、栓皮栎、黄榆、刺槐等。鳞、针叶树种有:油松、侧柏、樟子松等。②选择阳性树种。主要树种有:油松、落叶松、栓皮栎、槲树、刺槐、臭椿、桦树等。③选择耐瘠簿树种。适宜的树种有:侧柏、油松、刺槐、白桦、落叶松、栓皮栎、山杨等。二、整地技术。有条件的地方可采用反坡梯田、水平沟整地。反坡梯田又叫三角形水平沟,为连续带状,田面向内倾斜成3—15°反坡,面宽l-3m;埂内外侧坡均约60°;长度据情况而定,每隔一定距离修筑土埂,以预防水流汇集;深度40cm以上,保留带可略窄于梯田宽度。水平沟为断续或连续带状。沟面低于坡面且保持水平,构成断面为梯形或矩形的沟
First, the choice of species. ① select the dry tree species. Broadleaf species are: Koelreuteria tree, oak tree, cork oak, yellow elm, black locust and so on. Scales, coniferous species are: Chinese pine, Arborvitae, Pinus sylvestris and so on. ② select the positive species. The main species are: Pinus tabulaeformis, larch, cork oak, mistletoe, acacia, Ailanthus altissima, birch and so on. ③ choose barren tree species. Suitable species are: Platycladus orientalis, Pinus tabulaeformis, Locust, birch, larch, cork oak, aspen and so on. Second, site preparation technology. Conditions where the use of anti-slope terraces, horizontal ditch. Back-terraced terraces, also known as the triangular horizontal ditch, for the continuous strip, the field face tilted into 3-15 ° reverse slope, wide l-3m; 埂 both inside and outside the slope are about 60 °; length according to the circumstances, at regular intervals Distance to build soil 埂, in order to prevent the water flow together; more than 40cm depth, the reserve can be slightly narrower than the width of the terraces. Horizontal groove intermittent or continuous strip. The groove surface is lower than the slope surface and remains horizontal, forming a trapezoid or rectangular groove