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结合灌溉量和树种特征,分析了新垦绿洲克拉玛依农业开发区3个不同树种人工防护林带下土壤容重、总孔隙度、饱和含水量和含水量变化。结果表明,各树种防护林带下土壤物理性质存在垂直变异,其中土壤容重基本呈随着土层深度增加而逐渐增加的趋势,树种种类对土壤容重的影响不大;饱和含水量随着土层深度增加基本呈逐渐降低的趋势,树种种类对土壤饱和含水量影响不大;土壤总孔隙度在不同土层间均存在显著差异。俄罗斯杨和胡杨林带下土壤含水量均呈现出随土层深度增加而增加的趋势。在灌溉量相等且灌溉后经过相同时间的条件下,不同树种林带下在同一土层的土壤含水量存在差异,而在同一树种林带下,灌溉量大小对土壤含水量有影响。从改良土壤结构的角度来说,在选择构建绿洲防护林体系树种时,俄罗斯杨、榆树、胡杨林这3个树种具有同样的优势;从节约用水的角度来说,在防护林树种选择中胡杨比俄罗斯杨的优势大。
According to the amount of irrigation and tree species characteristics, the changes of soil bulk density, total porosity, saturated water content and water content under artificial shelterbelts in 3 different tree species in Kelamayi Agricultural Development Zone in Kenke Oasis were analyzed. The results showed that there was a vertical variation of soil physical properties under shelterbelts. The bulk density of soil tended to increase with the depth of soil, and the species of tree species had little effect on soil bulk density. Saturated water content with soil depth While the species of tree species had little effect on soil saturated water content. There was significant difference in total soil porosity between different soil layers. The soil moisture content of Populus euphratica forest and Populus euphratica forest in Russia showed a trend of increasing with the depth of soil layer. Under the condition of the same irrigation amount and the same time after irrigating, the soil moisture content of the same soil layer under different tree stands is different. However, under the same tree species, the amount of irrigation has an impact on the soil moisture content. From the viewpoint of improving soil structure, the three species of Populus euphratica, Populus euphratica and Populus euphratica have the same advantages in selecting the species of Oasis shelter forest system. From the aspect of water conservation, Populus euphratica than Populus euphratica The advantages of large.