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立新林场位于太岳山麓,海拔高1460米,全年降雨量500亳米左右,多集中在七、八、九三个月,春季直播造林容易遭受早害。为此,我们在实践中不断调查研究,总结经验,初步掌握了提高油松栽植成活率的方法。一、春季油松栽植造林油松春季栽植,要求土壤稍解冻就进行,幼苗要随栽随取,苗根全,带母土,每穴放2～3株,苗靠坑的直壁放置,根系要舒展,填入湿土,用脚踩实。从一九六七年以来,在各种立地条件下,采用相同技术措施,油松栽植成活率均达90%以上(见表一)。我们认为早春顶浆造林,土壤含水率
Lixin Forest Farm is located in Taiyue foothills, 1460 meters above sea level, the annual rainfall of about 500 millimeters, mostly concentrated in seven, eight, nine three months, direct seeding forest in spring vulnerable to early damage. To this end, we constantly investigate and study in practice, sum up experience, preliminary mastered the method of improving the survival rate of Pinus tabulaeformis planting. First, the spring planting Pinus tabulaeformis spring planting in spring, requires a little thawing on the soil to carry out, with the seedlings to take with the seedling roots, with native soil, put two or three strains per hole, seedlings placed on the wall straight pit, Roots to stretch, fill in wet soil, with the real step. Since 1967, using the same technical measures under various site conditions, the survival rate of Pinus tabulaeformis plants reached over 90% (Table 1). We think that in early spring, there is afforestation and soil moisture content