干旱区生态环境知识资源中心(Arid): 施氮对不同紫花苜蓿品种氮积累及土壤氮动态变化的影响

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	施氮对不同紫花苜蓿品种氮积累及土壤氮动态变化的影响
其他题名	Effect of Nitrogen Fertilizer on Nitrogen Accumulation in Alfalfa and the Content of Nitrogen in Soil
	齐鹏 1; 刘晓静 2; 刘艳楠 2; 郝凤 2; 蒯佳林 3
来源期刊	草地学报
ISSN	1007-0435
出版年	2015
卷号	23 期号:5 页码:1026-1032
中文摘要	在甘肃省秦王川灌区种植甘农3号和陇东苜蓿的紫花苜蓿(Medicago sativa)试验田,采用完全随机区组设计,设置3个施氮水平0,51.75和103.50 kg(N)?hm~(-2)(记为N0,N51.75,N103.50),研究施氮对不同紫花苜蓿品种氮积累及土壤氮动态变化的影响。结果表明:施氮可以提高西北荒漠灌区紫花苜蓿物质积累,紫花苜蓿植株干物质积累和氮积累随施氮量的增加而增加,在N103.50水平下最高,经回归分析得出施氮量与干物质积累和氮素积累之间符合一元二次方程;施氮可以显著提高西北荒漠灌区刈割苜蓿田土壤碱解氮含量,对全氮含量没有太大影响。因此,西北灌区紫花苜蓿适宜施氮量为103.50 kg(N)·hm~(-2),为了使紫花苜蓿达到更高产量,应在每次刈割后补施氮肥。
英文摘要	’Gannong No. 3’ and ’Longdong alfalfa’ were used as test materials in Qinwangchuan. Based on the method of randomized block design,3 levels of N treatments that were 0,51.75 and 103.50 kg?hm~(-2) (N0,N51.75,N103.50) were applied, and the effect of nitrogen fertilizer on dry matter and nitrogen accumulation in alfalfa and available N and total N in soil were studied. The results were summarized as follows: Nitrogen improved the northwest desert alfalfa matter accumulation in the irrigation area. Dry matter accumulation and nitrogen accumulation in alfalfa increased with the increase of N application. By regression analysis, N level and dry matter accumulation or nitrogen accumulation data fit to a quadratic equation with one variable. Dry matter accumulation and nitrogen accumulation reached the highest on the 103.50 kg?hm~(-2) level; Nitrogen significantly improved alkaline hydrolysis nitrogen content of alfalfa field in irrigation area of the northwest desert. The study suggested that the optimum N level in alfalfa in Gansu Province was 103.50 kg?hm~(-2). To achieve higher yield of alfalfa, we suggest applying nitrogen after each harvest (or cutting).
中文关键词	紫花苜蓿 ; 干物质 ; 氮积累 ; 碱解氮 ; 全氮
英文关键词	Alfalfa Nitrogen Dry matter Nitrogen accumulation value Available N Total N
语种	中文
国家	中国
收录类别	CSCD
WOS类目	AGRONOMY
WOS研究方向	Agriculture
CSCD记录号	CSCD:5589973
来源机构	甘肃农业大学
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/232393
作者单位	1.甘肃农业大学资源与环境学院, 兰州, 甘肃 730070, 中国; 2.甘肃农业大学草业学院中美草地畜牧业可持续发展研究中心, 草业生态系统教育部重点实验室, 兰州, 甘肃 730070, 中国; 3.甘肃省农业科学院, 兰州, 甘肃 730070, 中国
推荐引用方式 GB/T 7714	齐鹏,刘晓静,刘艳楠,等. 施氮对不同紫花苜蓿品种氮积累及土壤氮动态变化的影响[J]. 甘肃农业大学,2015,23(5):1026-1032.
APA	齐鹏,刘晓静,刘艳楠,郝凤,&蒯佳林.(2015).施氮对不同紫花苜蓿品种氮积累及土壤氮动态变化的影响.草地学报,23(5),1026-1032.
MLA	齐鹏,et al."施氮对不同紫花苜蓿品种氮积累及土壤氮动态变化的影响".草地学报 23.5(2015):1026-1032.