干旱区生态环境知识资源中心(Arid): 干旱区不同灌溉量下后备耕地土壤水盐动态变化规律研究

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	干旱区不同灌溉量下后备耕地土壤水盐动态变化规律研究
其他题名	Dynamic of Soil Water-salt of Reserve Famland in Arid Area Under Different Irrigation Conditions
	李宝富 1; 熊黑钢2 ; 张建兵 3; 栾福明 4; 张芳 5; 鲁魁锋 5
来源期刊	地理科学
ISSN	1000-0690
出版年	2013
卷号	33 期号:6 页码:763-768
中文摘要	为促进后备耕地改良技术的优化和水资源的高效利用,在新疆奇台县对不同灌溉量下盐碱地土壤水盐在时间序列上的变化规律进行对比研究。试验设8个处理,对应的灌溉定额分别为:6 800 m~3/hm~2、5 200 m~3/hm~2、4 400 m~3/hm~2、3 600 m~3/hm~2、2 800 m~3/hm~2、2 000 m~3/hm~2、1 200 m~3/hm~2和0 m~3/hm~2。结果表明:灌后1~8 d,剖面土壤处于洗盐期,土壤洗盐率与灌溉量成正比;灌溉8 d后,剖面进入积盐期,浅层土壤积盐率与灌溉量呈指数关系,而深层土壤积盐率与灌溉量呈线性关系。灌后1~18 d,各处理土壤碱化现象明显,碱化程度与灌溉量呈正比。灌溉18 d后,土壤碱化现象均减弱。综合考虑高效用水、高效洗盐和低碱化的目标,研究区在灌溉高峰期(7~8月)每次灌溉的合理灌溉量应为3 600~4 400 m~3/hm~2。
英文摘要	According to the field survey, flood irrigation is usually used to wash salt in crop growth period (summer) and in autumn in the study area. However, it is washing salt that leads to soil secondary salinization and waste of water resources, due to the lack of technical guidance. This article makes a comparative analysis on time series variation of soil water and salt under different irrigation (6 800 m~3/hm~2,5 200 m~3/hm~2,4 400 m3~/hm~2,3 600 m~3/hm~2,2 800 m~3/hm~2,2 000 m~3/hm~2,1 200 m~3/hm~2 and 0 m~3/hm~2) in Qitai county, Xinjiang Province. The results show that soil profile is at washing salt period after irrigation 1-8 days and soil washing rate is proportional to irrigation volume; after irrigation 8-45 days, soil profile is at salt accumulation period and the relationship between salification rate of shallow soil and irrigation is exponential while there is linear relationship between salification rate of deeper soil and irrigation. After irrigation 1-18 days, soil alkalization is significant and alkaliza-tion degree is proportional to irrigation volume. After irrigation 18-45 days, soil alkalization decreases basically. Under 1 200-6 800 m~3/hm~2 irrigation amount, the depth of soil wash salt in 60-80 cm and the depth of soil accumuiate salt in 140-260 cm. To realize water utilization and washing salt more efficiently and low alkalization, the irrigation volume in the study area is 3 600-4 400 m~3/hm~2 in the peak irrigation period (July to August).
中文关键词	后备耕地 ; 灌溉量 ; 土壤水盐 ; 时间动态
英文关键词	reserve farmland irrigation amount soil water-salt time dynamic
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:4871856
来源机构	中国科学院新疆生态与地理研究所 ; 新疆大学
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/229327
作者单位	1.曲阜师范大学地理与旅游学院, 日照, 山东 276826, 中国; 2.北京联合大学应用文理学院, 北京 100083, 中国; 3.中国科学院南京土壤研究所, 南京, 江苏 210008, 中国; 4.中国科学院新疆生态与地理研究所, 乌鲁木齐, 新疆 830011, 中国; 5.新疆大学资源与环境科学学院, 乌鲁木齐, 新疆 830046, 中国
推荐引用方式 GB/T 7714	李宝富,熊黑钢,张建兵,等. 干旱区不同灌溉量下后备耕地土壤水盐动态变化规律研究[J]. 中国科学院新疆生态与地理研究所, 新疆大学,2013,33(6):763-768.
APA	李宝富,熊黑钢,张建兵,栾福明,张芳,&鲁魁锋.(2013).干旱区不同灌溉量下后备耕地土壤水盐动态变化规律研究.地理科学,33(6),763-768.
MLA	李宝富,et al."干旱区不同灌溉量下后备耕地土壤水盐动态变化规律研究".地理科学 33.6(2013):763-768.