辽宁西部半干旱地区油松和樟子松整地造林效果分析

Effect of Site Preparation and Forestation of Pinus tabulaeformis and Pinus sylvestris var.mongolicain Semiarid areas of Western Liaoning Province

通过分析油松和樟子松整地造林对土壤理化性质的影响及造林成活率的调查,对辽宁西部半干旱地区油松和樟子松整地造林效果进行了试验研究.结果表明整地比对照提高造林成活率22.4-25.1个百分点,保存率提高18.0-19.5个百分点,整地造林效果显著;造林整地后土壤容重降低6.62%-12.58%,土壤孔隙度增加25.13%-32.89%,土壤全氮提高45.92% -61.60%,速效氮提高7.87%-38.05%,速效磷提高5.02% -36.33%,速效钾提高16.35%-46.22%,不同整地方式均能改善土壤的理化性质.

Effects of site preparation and forestation of Pinus tabulaeformis & Pinus sylvestris var .mongolica on soil physical & chemical properties were analyzed ;their survival rates were investigated .The effects of site prepara‐tion and forestation were studied in the semiarid areas in western Liaoning Province .Result shows that the survival rate & preservation rate of site preparation increase by 22 .4%‐25 .1% and 18 .0%‐19 .5% than that of CK ;the effects of site preparation and forestation are significant .After site preparation ,soil bulk density decrease by 6 .62%‐12 .58% ;soil porosity ,total N of soil ,available N ,available P ,available K increase by 25 .13%‐32 .89% ,45 .92%‐61 .60 ,7 .87%‐38 .05% ,5 .02%‐36 .33% ,16 .35%‐46 .22% ,respectively .Different site preparation methods can im‐prove the physical & chemical properties of soil .