干旱区生态环境知识资源中心(Arid): 北疆棉区长期膜下滴灌棉田土壤盐分时空变化与次生盐渍化趋势分析

Arid

	北疆棉区长期膜下滴灌棉田土壤盐分时空变化与次生盐渍化趋势分析
其他题名	Study on the variation and trend analysis of soil secondary salinization of cotton field under long-term drip irrigation condition in northern Xinjiang
	刘洪亮 1; 褚贵新 1; 赵风梅 2; 黄琴 2; 王飞 1
来源期刊	中国土壤与肥料
ISSN	1673-6257
出版年	2010
期号	4 页码:12-17
中文摘要	选择棉花覆膜滴灌条件下长期连作棉田这一本区域典型的耕作栽培模式为研究对象,在石河子灌区设置膜下滴灌棉田土壤次生盐渍化定位监测试验,采用定位定时分层取样技术研究北疆滴灌棉田土壤盐分时空动态变化. 结果表明,棉花整个生育期土壤盐分在水平方向上呈现明显的分区(脱盐区和积盐区)分布特征,膜内040 cm土壤盐分能维持在较低水平,脱盐效果显著,而膜外040 cm土壤盐分呈持续积盐趋势,40 cm以下各土层盐分变化幅度不大;土体垂直方向4060 cm土层形成一个积盐区;各土层盐分随着地下水埋深的加大,土壤积盐率迅速降低;监测表明040 cm耕层土壤存在碱化倾向,土壤pH值年均递增0.09,年均积盐0.36 g/kg,照此积盐速度,轻度盐渍化耕地达到强度次生盐渍化水平(总盐含量2030 g/kg)需要4070年,达到中度次生盐渍化水平(总盐含量1020 g/kg)需要1540年
英文摘要	This study based on the cotton field of typical farming and cultivation style with drip irrigation for a long time in arid desert region of northern Xinjiang, using stratified sample method in fixed location and time to inquiry the variation of the cotton soil secondary salinization in Shihezi Irrigation Area. The results of locating and monitoring secondary salinization under mulch drip irrigation showed that: Soil salinity showed a apparent regional distribution characteristics(desalination and salt accumulation area)in the horizontal direction during all the cotton growth periods;Under membrane the 040 cm soil salinity could be maintained at a low level and the desalination results were obvious, while outside the mulch the 040 cm soil salinity accumulation was continuously improving in the cotton fields under mulch drip irrigation in north of Xinjiang. Soil salinity changes slightly below 40 cm soil layer. The vertical direction of the soil from 4060 cm formed a salt accumulation zone;With the increasing depth of groundwater, soil salt accumulation rate decreased rapidly. In the monitoring periods, whether membrane or extracellular accumulation of various layers of salt would be in a salt state, and showed significant alkalization trends;040 cm topsoil increased at the rate of 0.036% average annual accumulation of salt, keeping on the same salt accumulation rate, mild salinization of arable land reaching the level of intensity of secondary salinization(total salt content of 2%3%)would be around 4070 years, and moderate secondary salinization levels(total salt content of 1%2%)would require 1540 years
中文关键词	膜下滴灌 ; 土壤次生盐渍化 ; 定位监测
英文关键词	drip irrigation under mulch secondary salinization location monitoring
语种	中文
国家	中国
收录类别	CSCD
WOS类目	AGRICULTURE MULTIDISCIPLINARY
WOS研究方向	Agriculture
CSCD记录号	CSCD:3973248
来源机构	石河子大学
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/226068
作者单位	1.新疆石河子大学农学院, 石河子, 新疆 832000, 中国; 2.新疆石河子农业科技开发研究中心, 石河子, 新疆 832000, 中国
推荐引用方式 GB/T 7714	刘洪亮,褚贵新,赵风梅,等. 北疆棉区长期膜下滴灌棉田土壤盐分时空变化与次生盐渍化趋势分析[J]. 石河子大学,2010(4):12-17.
APA	刘洪亮,褚贵新,赵风梅,黄琴,&王飞.(2010).北疆棉区长期膜下滴灌棉田土壤盐分时空变化与次生盐渍化趋势分析.中国土壤与肥料(4),12-17.
MLA	刘洪亮,et al."北疆棉区长期膜下滴灌棉田土壤盐分时空变化与次生盐渍化趋势分析".中国土壤与肥料 .4(2010):12-17.