渭干河-库车河三角洲绿洲植棉土壤的粒度分布特征

[目的]为了评价棉花长期连作土壤的物理性质即属性.[方法]利用棉花长期连作区试验,研究不同连作区棉田土壤粒度特征以及不同土壤层粒度特征的动态变化.[结果]库车县土壤多以细粉沙-中粉沙-极细粉沙-黏土为主的颗粒组成,属黏质壤土;沙雅县土壤多以粉沙-粗粉沙-细粉沙-极细粉沙为主的颗粒组成,属沙质壤土;新和县土壤多以中粉沙-粗粉沙-极细沙-细粉沙质地为主的颗粒组成,属粉沙质壤土.[结论]不同土壤剖面质地的粒度参数（X）、σ、SK与KG值与值存在差异,反映不同样地及不同土壤层的粒度特征.这为当地农业因地制宜发展提供了一定的理论基础.

Characteristics of Distribution of Soil Granularity of Cotton Soil in the Delta Oasis of Weigan and Kuqa Rivers

[ Objective] The research aimed to study the effect of long-term cotton continuous cropping on soil physical characters. [ Method] Cotton experiment method was adopted to study the characteristics of different area cotton continuous cropping soil properties and the dynamic change of different layers of granularity characteristics. [ Result ] The soil properties of Kuqa were clay loams, extremely fine sand. The soil properties both of Shaya and Toksu were silty loams and fine sand. [ Conclusion ] The soil size parameters X, o＇, SK and KG commendably marked the impacts of different soil type on size characteristics of the distribution of soil granularity. The research provided a theoretical basis for the development of local agriculture adaptation to local condition.