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在极端干旱的塔克拉玛干沙漠腹地 ,利用地下咸水灌溉建立人工绿地后 ,绿地土壤理化性质与流沙相比 ,变化很大。本文通过分析测定 ,结果表明 :绿地土壤细粒含量增加 :比重、容重降低 ,孔隙度 ,饱和含水量增加 ;在 5 0 cm剖面内盐分含量降低 ,但表层高于下层 ,p H增高 ,养分含量增加 ,肥力提高。不同植被类型和利用方式的绿地土壤理化性质有差异
In the hinterland of the extremely arid Taklamakan desert, the physical and chemical properties of the soil in the greenfield changed greatly compared with the quicksand when artificial saline-water irrigation was used to establish the artificial greenland. The results showed that the content of fines in green soil increased: the specific gravity and volume density decreased, and the porosity and saturated water content increased. The content of salt decreased at the depth of 50 cm, but the surface layer was higher than the lower layer, p H increased, while the nutrient content Increase, improve fertility. There are differences in the physical and chemical properties of the soils under different vegetation types and utilization patterns