干旱区生态环境知识资源中心(Arid): 塔里木灌区膜下滴灌的棉田土壤水盐分布特征

Arid

	塔里木灌区膜下滴灌的棉田土壤水盐分布特征
其他题名	Distributed characteristics of soil water-salt of cotton field under drip irrigation under mulching in Tarim Irrigated Area
	赵成义; 闫映宇; 李菊艳; 盛钰; 伊力哈木·伊马木
ISSN	1000-6060
出版年	2009
卷号	32 期号:6 页码:892-898
中文摘要	通过膜下滴灌田间试验,研究了塔里木灌区棉田土壤盐分运移特征.结果表明:膜下滴灌.的棉田土壤盐分呈"Y"状垂直分布,膜下土壤盐分含量小于膜间,膜间土壤盐分从表层到深层呈逐渐增减的趋势.随滴灌量增加,膜下土壤盐分峰值位置下移.滴灌量从2 618 m~3/hm~2增大到4 265m~3/hm~2,湿润峰位置从40 cm下移至100 cm,盐分峰值位置从30 cm下移至60 cm.滴灌结束后,膜下0～60 em及0～100 cm土壤平均含盐量均减小.脱盐程度随滴灌量增大而增加,0～60 cm土层脱盐率从6.0%增加到34.8%;而膜间土壤呈积盐状态,积盐程度随滴灌量减小而增大.随滴灌年限增加,0～60 cm的土层平均含盐量逐年增加,从2005年到2007年,4 265、3 926、3 600、3 271m~3/hm~2灌溉定额下的土壤平均含盐量年均增加了0.4、0.6、1.1、1.1 g/kg.研究结果指出了塔里木灌区现行棉花膜下滴灌制度存在的积盐问题,成果对完善干旱区膜下滴灌灌溉制度具有一定得指导意义.
英文摘要	The problem of soil salt accumulation under drip irrigation under mulching has become more and more severe in arid area. Based on the field experiment, the distributed characteristics of soil water and salt of cotton field were studied under drip irrigation under mulching in Tarim Irrigated Area. The results showed that soil salt presen-ted Y-shaped distribution in soil profile. The soil salt content under mulch was less than inter-mulch lands, presen- ting a characteristic of low at two ends and high at the middle within of the soil profiles, however, the soil salt con- tent of inter-mulch decreased gradually from surface soil to deep soil. The peak cure of soil salt under mulch moved downward with the increases of drip irrigation. The quantity of drip irrigation increased from 2 618m~3 /hm~2 to 4 265 mVhm~2 , wet peak moved downward from 60 cm to 100 cm and peak value of salt also moved downward from 30 cm to 60 cm. The average salt content in 0-60 cm and 0-100 cm soil layer decreased after drip irrigation. The de- salinization rate increased with the increase of quantity of drip irrigation. In 0-60 cm soil layer, desalinization rate ranged from 6.0% to 34. 8% . However, accumulation of soil salt of inter-mulch increased with decreasing of quan-tity of irrigation. With the increasing years of drip irrigation, the average soil salt content increased in 0 - 60 cm soil layer, the degree of accumulation of soil salt content aggravated with reducing quantity of drip irrigation. Quantity of drip irrigation in 4 265, 3 926, 3 600, 3 271 m~3/hm~2, and the average increasing of soil salt content in 0 -60 cm soil layer were 0.4, 0.6, 1.1, 1.1 g/kg from 2005 to 2007, respectively. The research results pointed out that the system of drip irrigation under mulching of cotton existed problem of accumulation salt in Tarim Farm, and had a certainty guidance meaning for integrity the system of drip irrigation under mulching in arid area.
中文关键词	膜下滴灌 ; 棉花 ; 土壤盐分 ; 运移 ; 塔里木灌区
英文关键词	drip irrigation under mulching cotton soil salt movement Tarim Irrigated Area
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:3841510
来源机构	中国科学院新疆生态与地理研究所
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/223579
作者单位	中国科学院,新疆生态与地理研究所, 中国科学院绿洲生态与荒漠环境重点实验室, 乌鲁木齐, 新疆 830011, 中国
推荐引用方式 GB/T 7714	赵成义,闫映宇,李菊艳,等. 塔里木灌区膜下滴灌的棉田土壤水盐分布特征[J]. 中国科学院新疆生态与地理研究所,2009,32(6):892-898.
APA	赵成义,闫映宇,李菊艳,盛钰,&伊力哈木·伊马木.(2009).塔里木灌区膜下滴灌的棉田土壤水盐分布特征.,32(6),892-898.
MLA	赵成义,et al."塔里木灌区膜下滴灌的棉田土壤水盐分布特征".32.6(2009):892-898.