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一、造林树种选择:依据适地适树的原则,根据造林目的、立地条件不同,确定适宜的造林树种。人工造林主要选择抗旱能力较强的树种,在干旱半干旱,坡度10°～25°之间的半阴坡,主要选择油松、落叶松、桦树、柞树等;坡度较缓,土质较好的半阴坡造林地,选择山杏、刺槐、火炬、黄栌、元宝枫等;坡度较大、土层较瘠薄的土地,造林树种主要为侧柏、桑树等;封山育林和飞播造林区补植的树种主要为油松、刺槐、沙棘等。二、造林整地时间和方法整地时间:为了增加土壤中的微
First, the afforestation tree species selection: According to the principle of suitable tree, depending on the purpose of afforestation, site conditions are different, to determine the appropriate afforestation species. Artificial afforestation mainly selects trees with strong drought resistance. In semi-arid slope with arid and semi-arid slopes of 10 ° ~ 25 °, the main choices are Pinus tabulaeformis, larch, birch and oak tree; Of the semi-shady afforestation land, the choice of apricot, black locust, torch, yellow croaker, Yuanbao maple; larger slope, soil less barren land, afforestation species mainly arborvitae, mulberry; Tree species mainly pine, acacia, seabuckthorn and so on. Second, afforestation preparation time and method of preparation time: In order to increase the micro-soil