干旱区生态环境知识资源中心(Arid): 田间滴灌入渗与蒸发条件下土壤水盐分布特征

Arid

	田间滴灌入渗与蒸发条件下土壤水盐分布特征
其他题名	Distribution features of field soil water and salt under the drip irrigation and evaporation
	张江辉 1; 王全九 2; 巨龙 1; 白云岗 3
ISSN	1000-6060
出版年	2009
卷号	32 期号:5 页码:684-690
中文摘要	2006年在新疆阿克苏阿瓦提丰收灌区通过田间试验,研究了滴灌入渗和蒸发条件下土壤水盐分布规律.结果表明:滴头流量增加时水平方向含水量增加,纵向含水量减小;滴头下方土壤含盐量与滴头流量成负相关关系,随着滴头流量的增加,盐分累积的深度依次减小;土壤盐分的淋洗效率和压盐深度均与灌水历时成正比;覆膜不仅对表层土壤含水量减小具有显著抑制作用,而且对表层土壤盐分累积有较好的抑制作用,不覆膜处理在0～10 cm深度处土壤盐分增加值最大,覆膜处理盐分增加值的最大值出现在20～30 cm深度处.
英文摘要	Available land resource is an important factor for the agricultural production in arid areas.However,excessive utilization of land resources influences strongly the local agricultural development.There are large - scale salt or alkaline lands in Xinjiang,northwest of China.To develop local agricultural economy of Xinjiang,it is a key problem how to irrationally explore and these land resources in present.Drip irrigation takes a positive role in leaching the degree of soil salt,providing a suitable water and salt environment for crop growth.Thus,to better understand water and salt moving mechanism in soil under different evaporation condition during the dropping process, the drip irrigation field experiment is done in irrigated cotton soil of Awati country,western Xinjiang.The field study was conducted to investigate the regular pattern of soil water and salt distribution under the different conditions of drip irrigation and evaporation.The results show that:(1) the degree of soil moisture in horizontal direction is positively correlated to the increase of water flow from the dripper,but in vertical direction it is negatively correlated to it;(2) The amount of salt in the spot right under the dripper is negatively correlated to the flow rate of water.The depth of accumulative salt soil is decreasing with increasing the rate of dripping water;(3) The efficiency of leaching and the depth of leaching of salt are both positively correlated to the duration time of dropping. With the increase of duration time and water amount of dropping,the salt amount in the upper soil is declining gradually while it is increased in the deeper soil as a whole;(4) Not only does mulching film have significant function in preventing the decrease of the surface soil moisture,but has a good effect upon preventing the accumulation of salt in the surface of soil as well.Without mulching film,the maximum of soil salt is at the depth ranging from 0 to 10cm,while the maximum of soil salt appears at the depth ranging from 20 -30cm with mulching it.This study not only can provide a theoretically guidelines for managing or improving technique of drip irrigation with mulching film in Xinjiang,but also provide a scientific references for irrationally using salt or alkaline lands in arid areas.
中文关键词	膜下滴灌 ; 土壤盐分 ; 土壤蒸发
英文关键词	runoff sediment cooperatively Loess Plateau the Yellow River
语种	中文
国家	中国
收录类别	CSCD
WOS类目	AGRICULTURE MULTIDISCIPLINARY ; AGRICULTURAL ENGINEERING
WOS研究方向	Agriculture
CSCD记录号	CSCD:3684589
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/223568
作者单位	1.西安理工大学, 西安, 陕西 710048, 中国; 2.西安理工大学, 黄土高原土壤侵蚀与旱地农业国家重点试验室, 西安, 陕西 710048, 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	张江辉,王全九,巨龙,等. 田间滴灌入渗与蒸发条件下土壤水盐分布特征[J],2009,32(5):684-690.
APA	张江辉,王全九,巨龙,&白云岗.(2009).田间滴灌入渗与蒸发条件下土壤水盐分布特征.,32(5),684-690.
MLA	张江辉,et al."田间滴灌入渗与蒸发条件下土壤水盐分布特征".32.5(2009):684-690.