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1.开沟整地造林。采用人工或机械开沟,沟宽80～100厘米,沟深50厘米左右,沟内可以铺麦秸、玉米秸或其它作物秸秆,作为有机肥料的贮备,沤烂后为树木提供有机养分,沟内挖坑栽树,栽后沿沟灌水。这一方法可使造林成活率提高20%以上。 2.选择抗性强深根性树种。适地适树是沙地造林成败的关键。要根据沙地气候条件、沙地种类、土壤质地、地下水深度等因素选择栽植树种。选择树种的主要原则:①选择深根性、根系发达、耐旱、耐瘠薄、耐风蚀及具有良好的护土改土性能的树种;②选择生长旺盛、生长量大、繁殖容易并且有一定经济价值的树种;③在流动性大的沙地、沙丘或水分条件较差的地方,在开始绿化时应采用耐旱的灌木,先固沙
1. Trenching site afforestation. The use of artificial or mechanical ditches, ditch width of 80 to 100 cm, ditch 50 cm deep, the trench can be spread wheat straw, corn stalks or other crop stalks, as organic fertilizer reserves, rotten rot for the trees to provide organic nutrients, ditch Digging planted trees, planted irrigation along the ditch. This method can increase the survival rate of afforestation more than 20%. 2. Select strong root-resistant tree species. Appropriate tree planting is the key to success or failure of afforestation in sandy land. According to the sand climatic conditions, sand types, soil texture, groundwater depth and other factors choose planting trees. Select the main principles of tree species: ① choose deep root, developed root system, drought, barren, wind erosion and has good soil improvement performance of the tree species; ② choose growth, growth, easy to reproduce and have some economic value Tree species; ③ in the flow of sand, sand dunes or poor water conditions at the beginning of greening should be used drought-resistant shrubs, the first sand