深穴整地穴底植苗草灌覆盖的造林新方法可有效地保持土壤水分,对提高干旱地区油松造林成活率有显著作用,同时对促进林木的生长也有一定作用。 The new method of afforestation covered by acreage seedling and grass irrigation can effectively maintain the soil moisture, which has a significant effect on improving the survival rate of Pinus tabulaeformis afforestation in arid areas, and also plays an important role in promoting the growth of forest trees.