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本文从土壤物理性质、土壤入渗、土壤水分动态以及造林成活率和幼林生长量等几个方面对不同整地工程的效益进了研究.结果表明,整地工程对土壤物理性质的影响主要是增加土壤非毛管孔隙度,进而增大了土壤饱和导水率,同时改善了土壤入渗性能,为土壤水分的贮存和保持创造了条件.整地工程土壤水分动态研究结果表明,整地工程土壤水分具有年内变化周期,以4、5、6月份为土壤于旱期.这期间除穴状整地外,其他各种整地工程土壤含水率比同坡向荒坡均有较明显的增加.其中,隔坡反坡梯田效果最为显著.
This paper studied the benefits of different land preparation projects from aspects of soil physical properties, soil infiltration, soil moisture dynamics, afforestation survival rate and young plantation growth. The results showed that the impact of land preparation on soil physical properties was mainly to increase soil Non-capillary porosity, thereby increasing the saturated hydraulic conductivity of the soil, while improving soil infiltration performance, creating conditions for the storage and maintenance of soil moisture.Studying soil moisture dynamics of land preparation project results show that the soil moisture of the land preparation project has a change Period, in April, May and June for the soil in the dry period during this period except for acupuncture site preparation, the other various soil preparation project soil moisture content than the same slope to the barren slope have a more obvious increase.Among them, Terraces most effective.