黄土退耕坡地膜下滴灌抗旱造林及减蚀效益研究
2004
张海 高鹏程 牛秀峰 杨荣慧
以黄土高原主要造林树种刺槐、油松为材料,以坡地常规造林技术为对照,研究了退耕坡地大鱼鳞坑覆膜打孔滴灌技术,使水通过滴灌管缓慢滴入土壤深处,避免了水分无效蒸发,可使刺槐造林成活率达到98 7%,油松达到91 4%,分别比对照提高了36 6%和38%。在降雨量相同的情况下可明显促进幼树生长,刺槐3年平均生长量比对照提高28 1%,油松提高39 3%,树冠投影面积增加2倍。在中强度降雨2次/a、总降雨量387 4mm情况下,25°坡地土壤侵蚀模数下降至2500t/(a·km2)以下。
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Publisher
Editorial Department of Journal of Soil and Water Conservation
Other Subjects
滴灌; 旱坡地造林; 旱坡地
Language
Chinese
2026-02-18
DOAJ
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