新疆伊犁河谷新垦荒地土壤粒度特征  

The Soil Grain Size Characteristics of the New Reclamation Wasteland in the Yili Valley of Xinjiang

作　　者：吴美榕[1,2] 李志忠[1,2,3] 靳建辉[1,2] 马鹏[1,2] 齐升吉[1,2] 凌智永[4] 

机构地区：[1]福建师范大学地理科学学院,福建福州350007 [2]福建师范大学湿润亚热带生态-地理过程省部共建教育部重点实验室,福建福州350007 [3]新疆师范大学地理科学与旅游学院,新疆乌鲁木齐830054 [4]新疆巴音郭楞职业技术学院冶金与资源系,新疆库尔勒841002

出　　处：《河北师范大学学报（自然科学版）》2011年第2期211-216,共6页Journal of Hebei Normal University：Natural Science

基　　金：国家"十一五"科技支撑计划重点项目(2007BAC15B07);新疆维吾尔自治区自然科学基金(200821103)

摘　　要：在新疆伊犁河谷察布查尔县农业示范区采集17个土壤剖面合汁119个样品，进行土壤粒度分析和综合对比研究．结果表明：1）不同土地类型土壤砂粒（〉50μm）、粉砂（2～50μm）和粘粒（〈2μm）含量差异较明显．多数耕作土壤样本的粉砂含量低于天然荒地，而砂粒含量要高于荒地土壤．2）各种类型土壤剖面粘粒和砂粒组分含量的变异均大于粉砂含量的变化，其中耕作土壤各粒级含量的变异系数要大于荒地土壤，各类土壤表层和下层粒度变异系数也不同．3）不同土地类型土壤的粒度参数存在差异．耕作土壤的平均粒径小于荒地土壤，且前者的分选性要比后者差，这与不同人为耕作方式对土壤粒度组成的扰动密切相关．According to the 119 samples by collecting from 17 soil profiles in the agricultural demonstration region in Qapqal county in Yili river valley in Xinjiang province, the grain sizes are analyzed and a comprehensive comparative study is made. The results are represented as follows： 1） different land types affect the distribution of sand （ 〉50 μm）, clay （2- 50 μm） and silt （ 〈 2 μm） significantly. The large amount of cultivated soil samples are less than wasteland soil in clay grain-size,but it is reverse in silt and sand grain-size; 2） the variation of the cultivated soil and wasteland profiles in silt and sand are significantly greater than that in clay, and the coefficient of variation of each grain grade content of the cultivated soil is greater than the wasteland, moreover, the coeffi- cient of variations of particle size of the upper and the lower layer in all kinds of soil are also different; 3） the di- versity of the soil granularity parameters also exists in different land types. The average particle size of cultivated soil is less than that of the wasteland,and the sorting of the cultivated is worse than that of the wasteland. It is closely relevant to the disturbance acting on granulometric composition of soil which caused by different cultivation modes.

关 键 词：土壤粒度 新垦荒地 伊犁河谷 新疆 

分 类 号：S15[农业科学—土壤学]