干旱区生态环境知识资源中心(Arid): 膜下滴灌湿润体交汇区土壤水盐运移特征田间实验研究

Arid

	膜下滴灌湿润体交汇区土壤水盐运移特征田间实验研究
其他题名	Field experimental study of soil water-salt transport characteristics in the interference area of wetted volume under the mulched drip irrigation
	王卫华 1; 王全九 1; 刘建军 2; 李淑芹 1; 赵春艳 3
来源期刊	干旱区地理
ISSN	1000-6060
出版年	2011
卷号	34 期号:4 页码:558-564
中文摘要	膜下滴灌是一种既能高效节水,又能适时调控土壤水盐运移的灌水技术。滴灌湿润体交汇区土壤水盐分布特征是影响密植作物正常生长的重要因素。在田间情况下,研究滴头流量、滴头间距、灌水量对滴灌湿润体交汇区的土壤水盐运移的影响。实验结果表明:滴头流量越大,湿润体交汇区土壤含水率越高,土壤盐分淋洗效果越好,在滴头流量1.38 L/h和2.7 L/h时,湿润体交汇区上层土壤呈现积盐现象,说明小滴头流量对土壤交汇区土壤盐分淋洗效果较差；滴头间距越小,湿润体交汇区获得水量越多,湿润体交汇区剖面同一位置的土壤含水率越高,土壤盐分淋洗效果越好；灌水量越多,土壤湿润深度越深,湿润体交汇区剖面相同位置的土壤含水率稍高,盐分淋洗效果明显。
英文摘要	The Mulched drip irrigation is the irrigation technology which not only can save water effectively,but also can regulate the water-salt transport at the right moment.The soil water-salt transport characteristics in the interference area of wetted volume under the drip irrigation have an important affect on the normal growth of the closelyplanting crops.The research was carried out on the soil water-salt transport characteristics in the interference area of wetted volume under drip irrigation in the field,and the irrigation technical parameters were determined,such as the dripper discharge,dripper space and irrigation quantity,using the constant voltage water supply system in the Bazhou Irrigates Test House in 2007.The results indicate as follows:(1)under the condition of the same dipper space,the required time for the point infiltration to be changed to connection infiltration decreased with the increases of dripper discharge,the power functions can be fair used to describe the relationship between extending speed of drip irrigation wetted volume’s interference area width and interference infiltration time while dripper discharge being different; (2)the bigger the dipper discharge,the higher the soil water content in the interference area of wetted volume,the better the soil salt-leaching efficiency,the better the effect of salt leaching.when the dripper discharge are 1.38 L/h and 2.7 L/h,the upper layer of the interference area of wetted volume presents the phenomenon of salt’s accumulation,which can be explained that the small capacity has effected the soil-salt leaching;(3)the smaller the dripper space,the more the water volume obtained by the connection area,the higher the soil water content in the same position in the interference area of wetted volume profile,the better the effect on the soilsalt leaching; (4)the more the irrigation quantity,the deeper the soil-wetted depth,the soil water content in the same position of the interference area in the wetted volume profile is slightly high,and the soil salinity is reduced,the soil-salt leaching effect is obvious.This study provides the technical basis for drop irrigation design in the arid and semi-arid regions.
中文关键词	膜下滴灌 ; 滴头流量 ; 滴头间距 ; 交汇区宽度 ; 水盐运移
英文关键词	mulched drip irrigation dripper discharge dripper space interference area width water-salt transport
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:4271774
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/226465
作者单位	1.西安理工大学水资源研究所, 西安, 陕西 710048, 中国; 2.新疆水利水电勘测设计研究院, 乌鲁木齐, 新疆 830000, 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	王卫华,王全九,刘建军,等. 膜下滴灌湿润体交汇区土壤水盐运移特征田间实验研究[J],2011,34(4):558-564.
APA	王卫华,王全九,刘建军,李淑芹,&赵春艳.(2011).膜下滴灌湿润体交汇区土壤水盐运移特征田间实验研究.干旱区地理,34(4),558-564.
MLA	王卫华,et al."膜下滴灌湿润体交汇区土壤水盐运移特征田间实验研究".干旱区地理 34.4(2011):558-564.