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在塔里木河中游地区,以典型植被类型选取样地,分层取得0~100cm土壤样品并以此为研究对象,比较不同样地之间主要理化性质差异及变异性。结果表明:10个典型样地土壤的全氮、全磷含量偏低,全钾含量较高;各样地土壤容重显示出土壤比较紧实,结构性差,孔隙少,且各层之间有一定的差异性。各样境土壤的全氮、全磷、全钾变异系数呈现出的随着土层深入逐渐减小的样态。从该地区典型样地土壤主要理化指标的相关性来看,土壤含水率和土壤主要化学因子之间呈现明显的相关性,土壤容重也与大部分指标呈显著的负相关性,说明塔里木河中游地区,土壤的水分和紧实度存在地区差异和分层差异,对该地区其它理化指标都有一定的影响。
In the middle reaches of the Tarim River, samples were taken from typical vegetation types, and 0 ~ 100cm soil samples were obtained by stratification. The main physical and chemical properties differences and variability were compared among different plots. The results showed that the contents of total nitrogen and total phosphorus were lower and the content of total potassium was higher in 10 typical plot soils. The soil bulk density in each sample showed that the soil was compacted, poor in structure and less in porosity, The difference. The soil total nitrogen, total phosphorus and total potassium variation coefficients showed a pattern of deepening and decreasing with soil depth. From the correlation of the main physical and chemical indexes of soil in the typical sample plots in this area, there is a clear correlation between soil moisture content and main chemical factors of soils, and the soil bulk density is negatively correlated with most of the indexes, indicating that the middle reaches of the Tarim River There are regional differences and stratification differences between regions and soil moisture and compaction, which have some impacts on other physical and chemical indicators in the region.