气候变化领域集成服务门户(CCPortal): Soil water and salt distribution under furrow irrigation of saline water with plastic mulch on ridge

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DOI	10.1007/s40333-013-0142-6
	Soil water and salt distribution under furrow irrigation of saline water with plastic mulch on ridge
	Chen, LiJuan; Feng, Qi
发表日期	2013
ISSN	1674-6767
EISSN	2194-7783
卷号	5 期号:1
英文摘要	Furrow irrigation when combined with plastic mulch on ridge is one of the current uppermost water-saving irrigation technologies for arid regions. The present paper studies the dynamics of soil water-salt transportation and its spatial distribution characteristics under irrigation with saline water in a maize field experiment. The mathematical relationships for soil salinity, irrigation amount and water salinity are also established to evaluate the contribution of the irrigation amount and the salinity of saline water to soil salt accumulation. The result showed that irrigation with water of high salinity could effectively increase soil water content, but the increment is limited comparing with the influence from irrigation amount. The soil water content in furrows was higher than that in ridges at the same soil layers, with increments of 12.87% and 13.70% for MMF9 (the treatment with the highest water salinity and the largest amount of irrigation water) and MMF1 (the treatment with the lowest water salinity and the least amount of irrigation water) on 27 June, respectively. The increment for MMF9 was gradually reduced while that for MMF1 increased along with growth stages, the values for 17 August being 2.40% and 19.92%, respectively. Soil water content in the ridge for MMF9 reduced gradually from the surface layer to deeper layers while the surface soil water content for MMF1 was smaller than the contents below 20 cm at the early growing stage. Soil salinities for the treatments with the same amount of irrigation water but different water salinity increased with the water salinity. When water salinity was 6.04 dS/m, the less water resulted in more salt accumulation in topsoil and less in deep layers. When water salinity was 2.89 dS/m, however, the less water resulted in less salt accumulation in topsoil and salinity remained basically stable in deep layers. The salt accumulation in the ridge surface was much smaller than that in the furrow bottom under this technology, which was quite different from traditional furrow irrigation. The soil salinities for MMF7, MMF8 and MMF9 in the ridge surface were 0.191, 0.355 and 0.427 dS/m, respectively, whereas those in the furrow bottom were 0.316, 0.521 and 0.631 dS/m, respectively. The result of correlation analysis indicated that compared with irrigation amount, the irrigation water salinity was still the main factor influencing soil salinity in furrow irrigation with plastic mulch on ridge.
关键词	water and salt transportation furrow irrigation saline water soil salinity soil water content
学科领域	Environmental Sciences & Ecology
语种	英语
WOS研究方向	Environmental Sciences
来源期刊	JOURNAL OF ARID LAND
来源机构	中国科学院西北生态环境资源研究院
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/111707
作者单位	Chinese Acad Sci, Alxa Desert Ecohydrol Expt Res Stn, Cold & Arid Reg Environm & Engn Res Inst, Lanzhou 730000, Peoples R China
推荐引用方式 GB/T 7714	Chen, LiJuan,Feng, Qi. Soil water and salt distribution under furrow irrigation of saline water with plastic mulch on ridge[J]. 中国科学院西北生态环境资源研究院,2013,5(1).
APA	Chen, LiJuan,&Feng, Qi.(2013).Soil water and salt distribution under furrow irrigation of saline water with plastic mulch on ridge.JOURNAL OF ARID LAND,5(1).
MLA	Chen, LiJuan,et al."Soil water and salt distribution under furrow irrigation of saline water with plastic mulch on ridge".JOURNAL OF ARID LAND 5.1(2013).