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为抵御旱害,提高半干旱地区造林成活率和保存率,改善土壤理化性质,增加土壤肥力,促进新植幼苗幼树生长量,进一步提高对干旱等不良环境的抵抗性,创新了在造林栽植穴土壤中增添灌草隔离层来抵御旱害的造林新方法.研究结果表明:半干旱地区荒山植苗造林,在栽植穴土壤中增添野生灌草隔离层,对提高土壤含水量、田间持水量,增加土壤总孔隙度、毛管孔隙度,降低土壤容重,提高土壤全N、P2O5、K2O的含量及促进新植幼苗幼树生长量的作用效果显著.
In order to resist the drought, raise the survival rate and preservation rate of afforestation in semiarid area, improve soil physical and chemical properties, increase soil fertility, promote seedling growth of newly planted seedlings and further improve the resistance to adverse environmental conditions such as drought and innovate in afforestation and planting The results showed that the afforestation of barren hills in the semi-arid area and the addition of wild shrub-and-shrub isolation layer in the planting hole soil could improve the soil water content, field water holding capacity, Increasing the total porosity of the soil, capillary porosity, reducing soil bulk density, increasing soil N, P2O5, K2O content and promoting seedling growth of newly planted seedlings have a significant effect.