干旱区生态环境知识资源中心(Arid): 暗管排水对南疆高水位膜下滴灌棉田盐分管控及淋洗效果分析

Arid

	暗管排水对南疆高水位膜下滴灌棉田盐分管控及淋洗效果分析
其他题名	Analysis of the effect of subsurface pipes on salt control and leaching in drip irrigation under a mulch cotton field at high groundwater level in Southern Xinjiang by subsurface pipes
	杨玉辉; 周新国; 李东伟
来源期刊	干旱区研究
ISSN	1001-4675
出版年	2020
卷号	37 期号:5
中文摘要	膜下滴灌植棉易发生年内土壤积盐与年际间盐分持续累积,因此,为探索全生育期棉田土壤盐分对暗管不同布设参数的响应,在本地区多年膜下滴灌高水位盐渍化棉田开展暗管改良试验,分析膜下滴灌-暗管排水模式对新疆南部特质盐渍土管控及淋洗效果。结果表明:利用暗管对棉田进行盐分管控时,棉花可在适宜的土壤盐分环境中生长,并在生育期末使盐渍化棉田由年内积盐转变为脱盐,同时可在理论上减免冬春灌用水量,而土壤盐分平衡点的范围值与域值随暗管间距增加而升高,对土壤盐分管控效果随之降低;未铺设暗管时,生育期灌水后土壤会发生返盐现象,而铺设暗管后灌水会具有不同程度的淋洗效果,且淋洗效果随间距增加而降低;根据土壤脱盐率差异性及回归分析得知,W1与W2、W3存在显著差异(P<0.1),暗管间距对土壤脱盐率的影响相比埋深更为明显;确定了W1D1、W1D 2为试验设计中较优方案;由于间距20 m亦具有较好的排盐、控盐效果,基于经济性考虑,若非重盐渍化棉田,建议采用20 m作为合理间距。本研究能为干旱区盐渍土改良和暗管排水技术在新疆南部的推广应用提供理论依据。
英文摘要	Cotton planting under mulch drip irrigation in Southern Xinjiang contributes to the accumulation of salt in the soil through the years, and there are few reports on the study of soil salinity in the high- temperature and strong evaporating salinized cotton fields in South Xinjiang, which are buried in the saturated zone with subsurface pipes. Therefore, to explore the response of soil salinity in cotton fields to layout parameters of subsurface pipes during the whole growth period, soil salinity environment tests in cotton fields with high groundwater and salt content level by drip irrigation under mulch for many years were carried out. The width and depth as the influence factors of subsurface pipes drainage performance were set to three width levels(10, 20, and 30 m), two depth levels(0.8 and 1.1 m), and ck(no drainage). The effects of drip irrigation under mulch and drainage by subsurface pipes on the management and leaching of saline soil in Southern Xinjiang were analyzed. The results show thatsoil salinity in cotton fields with high groundwater and salt content levels in Southern Xinjiang was at a high level during the whole growth period in CK; at the end of the growth period, salt accumulation occurred compared with that before sowing. However, the salt content obviously decreased when the soil salinity in the cotton field was controlled by subsurface pipes(16%-43% decrease), and the salinized cotton field changed from salt accumulation to desalination. The water consumption during winter and spring irrigation can be reduced in theory at the same time. The equilibrium point is in a lower range value and scope field. The effect of subsurface pipes on soil salinity management decreases with the increase of width. Salt returns after irrigation without subsurface pipes during the growth period; however, the purpose of leaching and desalination after irrigation can be achieved with subsurface pipes, and the leaching and desalination effect decreases with the increase of width. According to the difference and regression analysis of the soil desalination rate, there were significant differences between W1(10 m) and W2(20 m), W3(30 m)(P<0.1). The average difference of soil desalination rates between W1 and W2, W3 was 13.5% and 19.9%, respectively, at D1 depth, while that between W1 and W2, W3 was 24.8% and 23.6% at D2 depth. The influence of the width is more obvious than that of depth on soil desalination rate. It is determined that W1D1 and W1D2 are the best schemes in the experimental design. Because the width of 20 m also has a good effect on salt discharge and control, based on economic considerations, if the cotton field is not heavily salinized, 20 m is recommended as a reasonable width. The results can provide a basis for improving saline soil in arid areas and the popularization and application of subsurface pipes drainage technology in Southern Xinjiang.
中文关键词	暗管 ; 盐渍化 ; 膜下滴灌 ; 棉花 ; 高水位 ; 脱盐 ; 南疆
英文关键词	subsurface pipes soil salinization drip irrigation under mulch cotton high groundwater level desal- ination Southern Xinjiang
类型	Article
语种	中文
收录类别	CSCD
WOS类目	Agriculture
CSCD记录号	CSCD:6868851
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/353532
作者单位	杨玉辉, 中国农业科学院农田灌溉研究所;;塔里木大学水利与建筑工程学院, ;;, 新乡;;阿拉尔, 河南;;新疆 453000;;843300, 中国. 周新国, 中国农业科学院农田灌溉研究所, 新乡, 河南 453000, 中国. 李东伟, 中国农业科学院农田灌溉研究所, 新乡, 河南 453000, 中国.
推荐引用方式 GB/T 7714	杨玉辉,周新国,李东伟. 暗管排水对南疆高水位膜下滴灌棉田盐分管控及淋洗效果分析[J],2020,37(5).
APA	杨玉辉,周新国,&李东伟.(2020).暗管排水对南疆高水位膜下滴灌棉田盐分管控及淋洗效果分析.干旱区研究,37(5).
MLA	杨玉辉,et al."暗管排水对南疆高水位膜下滴灌棉田盐分管控及淋洗效果分析".干旱区研究 37.5(2020).