干旱区生态环境知识资源中心(Arid): 滴灌条件下干旱区农田水盐运移及调控研究进展与展望

Arid

	滴灌条件下干旱区农田水盐运移及调控研究进展与展望
其他题名	Review on water and salt transport and regulation in drip irrigated fields in arid regions
	田富强; 温洁; 胡宏昌; 倪广恒
来源期刊	水利学报
ISSN	0559-9350
出版年	2018
卷号	49 期号:1 页码:126-135
中文摘要	以滴灌为代表的节水灌溉技术在我国干旱区大面积推广应用,提高了水肥利用效率,也改变了农田水盐运移模式.一方面,地下水位下降,土壤水与地下水之间的联系减弱,减少了潜水蒸发带来的盐分,使得土壤盐碱化减轻;另一方面,由于缺乏洗盐水量,导致积累在土壤表层的盐分不能及时淋洗人深层,表层土壤盐碱化加重.本文通过回顾滴灌技术在干旱区的应用和研究,系统分析了滴灌条件下干旱区农田土壤水盐运移特点和盐分累积规律,概括了不同作物的水盐响应特征,总结了不同滴灌条件下的土壤水盐数值模型,归纳了目前常用的土壤水盐调控方法.在此基础上提出了需要进一步研究的问题和方向,包括:进一步揭示滴灌条件下土壤水盐运移及累积特征,科学制定农田水盐调控方案;进一步揭示作物水盐耦合响应动力学机制,科学确定调控阈值;发展具有我国自主知识产权的水盐运移和作物生长耦合模拟软件;构建基于生态格局的农田排水和区域盐分处置模式.
英文摘要	Drip irrigation, one of advanced water-saving irrigation technologies, has been widely applied in the arid regions of China. It can enhance the efficient use of water and fertilizer and therefore increases crop yield. However, it also changes the distribution and accumulation pattern of salt. On one hand, the phreatic evaporation can be reduced due to dropping down of groundwater table and thus soil salinization is alleviated. On the other hand, few water is applied with irrigation and thus salt tends to accumulate in the surface soil layer due to lack of leaching water. To address this emerging issue of soil salinization, an attempt was made in this paper to rigorously review : (1) water and salt migration and especially soil salt accumulation under drip irrigation, (2) features of crop responses to water and salt stress, (3) numerical models of soil water and salt movement, and (4) measures for soil water and salt regulation. Based on the extensive literature review,several research tasks associated with drip irrigation were identified : (1) to further explore characteristics of water and salt migration and accumulation and to develop sustainable operation schemes for field water and salt management under varied climatic and geologic settings, (2) to explore coupled responses to water and salt stress for different crops and corresponding threshold values for management, (3) to develop the numerical software for coupled water/salt movement and crop growth, and (4) to develop ecological pattern based modes on farmland drainage and regional salinity disposal.
中文关键词	滴灌 ; 水盐运移 ; 模拟 ; 作物响应 ; 调控
英文关键词	drip irrigation water-salt transport simulation model crop response regulation
语种	中文
国家	中国
收录类别	CSCD
WOS类目	AGRICULTURAL ENGINEERING
WOS研究方向	Agriculture
CSCD记录号	CSCD:6161157
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/238257
作者单位	清华大学水利水电工程系, 北京 100084, 中国
推荐引用方式 GB/T 7714	田富强,温洁,胡宏昌,等. 滴灌条件下干旱区农田水盐运移及调控研究进展与展望[J],2018,49(1):126-135.
APA	田富强,温洁,胡宏昌,&倪广恒.(2018).滴灌条件下干旱区农田水盐运移及调控研究进展与展望.水利学报,49(1),126-135.
MLA	田富强,et al."滴灌条件下干旱区农田水盐运移及调控研究进展与展望".水利学报 49.1(2018):126-135.