摘要
土壤质地对土壤盐分空间分布具有间接的影响，对玛纳斯河流域3种土壤质地：沙土、沙壤土、中壤土的土壤含盐量进行垂直分布及盐分离子研究分析。结果表明：3种土壤类型的盐分分布情况差异显著，中壤土含盐量较低，沙壤土、沙土的表层含盐量较高；3种土壤类型不同深度盐分变化趋势也差异很大，中壤土含盐量在20cm处最大，20cm以下土壤含盐量呈下降趋势；沙壤土在60cm处最大，60cm以下土壤含盐量呈下降趋势；沙土在0～150cm土壤盐分处于增加趋势；在非耕作土壤的沙土和沙壤土中，阳离子以Ca^2＋、Mg^2＋为主，在耕作性土壤的中壤土阳离子以Na^＋、K^＋为主，阴离子都以SO4^2-为主。
The soil texture has indirect influence on the soil salinity spatial distribution. In this paper, the vertical distribution of soil salinity and salt ions of three types of soil texture, including sand, sandy loam and loam, in Manas River Basin are studied. The results indicate that the salinity distribution of the three types of soil is different remarkably; the salt content in the loam is low, while that in the sandy loam and the surface layer of sandy soil salt content is high; the salinity change tendency with the depth of the three types of soil is different remarkably, too; the salinity content is the biggest at the 20 cm depth and decreases at the depth larger than 20 cm for loam, it is the biggest at the 60 cm depth and decreases at the depth larger than 60 cm for sandy loam, and it increases at the depth from 0 to 150 cm for sandy soil; the cations are mainly Ca2＋ and Mg2＋ in non-cropping sand soil and sandy loam, while mainly Na＋ and K＋ in cropping loam ;the anions are mainly SO4^2- in all the three types of soil.
出处
《节水灌溉》
北大核心
2014年第5期4-6,共3页
Water Saving Irrigation
基金
NSFC-新疆联合基金(U1203282)
国家自然科学基金(51369027)
石河子大学SRP(20130132)
