干旱区生态环境知识资源中心(Arid): 荒漠绿洲井灌农田砂质土壤氮素淋失规律研究

Arid

	荒漠绿洲井灌农田砂质土壤氮素淋失规律研究
其他题名	Nitrate leaching in irrigated maize on sandy soil in desert oasis in Alxa League,China
	梁浩 1; 胡克林 1; 李保国 1; 张源沛 2
来源期刊	干旱区资源与环境
ISSN	1003-7578
出版年	2016
卷号	30 期号:7 页码:114-118
中文摘要	应用土壤-作物系统模型模拟分析了内蒙古阿拉善地区不同水肥管理模式(传统和改进)下的土壤水分动态、氮素淋失以及春玉米生长过程。结果表明,当前农民传统水肥管理的水分渗漏量和氮素淋失量非常大,分别达到了303mm和179kgN/hm~2,而改进处理的水分渗漏量和氮素淋失量约是传统处理的一半。两种管理模式的水分利用效率差别不大,而氮素利用效率差异较大,分别为25.3和32.5kg/(kg N),改进模式要明显好于传统模式。
英文摘要	Field experiment with traditional (T1) and improved (T2) water and nitrogen (N) management was conducted in Left Banner of the Alxa League in Inner Mongolia Autonomous Region. The WHCNS (soil water heat carbon and nitrogen simulation) model was used to simulate the water movement,N transport and crop growth process. The validation results showed that the simulated water content and nitrate concentration in soil profile as well as leaf area index,dry matter weight,crop N uptake and grain yield were all in good agreement with the measured data. The simulated results indicated that water drainage and nitrate leaching for T1 treatment were very large,which reached 303 mm and 179kgN /hm~2,respectively. while the amounts for the T2 treatment was only half of the traditional treatment. Water use efficiency for both treatments was about 2.1kg /m~3,and N use efficiencies for T1 and T2 were 25.3 and 32.5kg /kg N,respectively. The T2 treatment was better than that of T1.
中文关键词	荒漠绿洲 ; 砂质土壤 ; 氮素模型 ; 硝酸盐淋失 ; 水肥优化
英文关键词	desert oasis sandy soil nitrogen model nitrate leaching optimizing irrigation and fertilization
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:5775142
来源机构	中国农业大学
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/234375
作者单位	1.中国农业大学资源与环境学院, 农业部华北耕地保育重点实验室, 北京 100193, 中国; 2.宁夏农林科学院农业生物技术中心, 银川, 宁夏 750002, 中国
推荐引用方式 GB/T 7714	梁浩,胡克林,李保国,等. 荒漠绿洲井灌农田砂质土壤氮素淋失规律研究[J]. 中国农业大学,2016,30(7):114-118.
APA	梁浩,胡克林,李保国,&张源沛.(2016).荒漠绿洲井灌农田砂质土壤氮素淋失规律研究.干旱区资源与环境,30(7),114-118.
MLA	梁浩,et al."荒漠绿洲井灌农田砂质土壤氮素淋失规律研究".干旱区资源与环境 30.7(2016):114-118.