干旱区生态环境知识资源中心(Arid): 膜下滴灌微区环境对土壤水盐运移的影响

Arid

	膜下滴灌微区环境对土壤水盐运移的影响
其他题名	Micro drip irrigation district environmental impact on soil water and salt transport
	周和平 1; 王少丽 2; 吴旭春 3
来源期刊	水科学进展
ISSN	1001-6791
出版年	2014
卷号	25 期号:6 页码:816-824
中文摘要	基于膜下滴灌特有的膜中、膜间、膜边、膜外微区环境,利用20112013年田间对比试验方法获取的5 960个数据,运用柯布-道格拉斯模型,构建膜下滴灌环境土壤层次、灌水定额、土壤水分、气温、蒸发综合因素与土壤水盐关系及影响效应分析模型。结果表明,在气候干旱、蒸发强烈灌区,地膜覆盖与滴灌结合的地表介面灌溉形式下,土壤水盐具有水平方向由膜中向膜边地表裸露区定向迁移,垂直方向土壤水盐则由下向上层运移且趋于膜外边界积累的趋势,尤其是气温与蒸发因素交互作用,推进膜下滴灌土壤水盐在地膜覆盖与土壤裸露区域空间运移,研究结果进一步揭示了膜下滴灌土壤水盐定向迁移形成机理,为膜下滴灌土壤水盐地表排放模式应用提供了依据。
英文摘要	Drip irrigation under mulch is an efficient and water-saving irrigation practice implemented in the arid agricultural areas of China. Based on the micro environments specific to drip irrigation,i. e. middle of the film,between the film,edge of the filmandoutside the film,as well as the 5 960 data collected during 20112013 by field contrast test,the relationships between soil level environment,irrigation quota,soil moisture,temperature,evaporation and water-salt movement were established through the Cobb-Douglas model. The results showed that,in arid irrigation areas with strong evaporation and under the combination of plastic film mulching and drip irrigation,soil water and salt migrate horizontally from themiddle of the filmtowards the exposededge of the film,and vertically from the lower to the upper soil layers,tending to accumulate in the boundary at theedge of the film. The interaction between temperature and evaporation,especially,drives the movement of soil water and salt at mulching spaces and in bare soils. The research further revealed the directional migration of soil water and salt in the context of drip irrigation under mulch,and can provide a basis for the application of water-salt surface discharge method in soils.
中文关键词	干旱区 ; 膜下滴灌 ; 土壤水盐 ; 微区环境因素 ; 影响分析
英文关键词	arid areas drip irrigation under mulch soil water and salt micro environmental factors impact analysis
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:5322795
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/231702
作者单位	1.新疆维吾尔自治区水利管理总站, 乌鲁木齐, 新疆 830000, 中国; 2.中国水利水电科学研究院, 北京 100038, 中国; 3.新疆水利水电科学研究院, 乌鲁木齐, 新疆 830049, 中国
推荐引用方式 GB/T 7714	周和平,王少丽,吴旭春. 膜下滴灌微区环境对土壤水盐运移的影响[J],2014,25(6):816-824.
APA	周和平,王少丽,&吴旭春.(2014).膜下滴灌微区环境对土壤水盐运移的影响.水科学进展,25(6),816-824.
MLA	周和平,et al."膜下滴灌微区环境对土壤水盐运移的影响".水科学进展 25.6(2014):816-824.