干旱区生态环境知识资源中心(Arid): 施氮量对柳枝稷生物质产量和水肥利用特性的影响

Arid

	施氮量对柳枝稷生物质产量和水肥利用特性的影响
其他题名	Effect of Nitrogen Rate on Biomass Yield, Water and Fertilizer Utilization Characteristics of Switchgrass
	刘吉利; 吴娜
来源期刊	西北农业学报
ISSN	1004-1389
出版年	2014
卷号	23 期号:7 页码:166-171
中文摘要	在黄土高原半干旱地区,以能源作物柳枝稷为材料,通过田间试验,研究不同施氮量(0、60、120和240 kg/hm~2)对柳枝稷生物质生产和水氮利用效率的影响。结果表明:施氮显著提高柳枝稷生物质产量,当施氮量为120 kg/hm~2时柳枝稷生物质产量最高;施氮显著增加柳枝稷耗水量,在一定程度上降低土壤含水量,但显著提高水分利用效率;施氮显著提高柳枝稷生物质中氮质量分数和吸氮量,但施氮量超过120 kg/hm~2后,继续增加施氮量则不能显著增加植株对氮素的吸收积累;柳枝稷氮肥利用效率随氮肥用量增加而降低。可见,施氮量60~120 kg/hm~2既能保证柳枝稷较高的生物质产量,又能保证较高的水分利用效率和氮肥利用效率。
英文摘要	The field trials were conducted to investigate the influence of nitrogen application rate on biomass production and water and nitrogen use efficiency of energy crop switchgrass in semi-arid areas of the Loess Plateau. The treatments included four nitrogen fertilizer rates, respectively: N0 (0 kg/hm~2), N60 (60 kg/hm~2), N120 (120 kg/hm~2) and N240 (240 kg/hm~2). The results showed that nitrogen application significantly improved the biomass yield of switchgrass, and the highest biomass yield were observed in N application treatment of 120 kg/hm~2. Nitrogen application significantly increased switchgrass evapotranspiration, and reduced soil moisture to some extent, but significantly improved water use efficiency. Within the range of 0-120 kg/hm~2 N fertilizer level, nitrogen concentration and N uptake of switchgrass plant significantly increased, but no significant increase in nitrogen absorption and accumulation were found with more N application. Nitrogen use efficiency of switchgrass reduced with the increase of nitrogen application rate. Under the experimental condition, the nitrogen application rate between 60 kg/hm~2 and 120 kg/hm~2 could maintain higher biomass yield, higher water use efficiency and higher nitrogen use efficiency.
中文关键词	柳枝稷 ; 产量 ; 氮肥 ; 水分利用效率 ; 氮素利用效率
英文关键词	Switchgrass Biomass yield Nitrogen fertilizer Water use efficiency Nitrogen use efficiency
类型	Article
语种	中文
国家	中国
收录类别	CSCD
WOS类目	Agriculture
WOS研究方向	Agriculture
CSCD记录号	CSCD:5208032
来源机构	宁夏大学
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/231897
作者单位	刘吉利, 宁夏大学新技术应用研究开发中心, 银川, 宁夏 750021, 中国.; 吴娜, 宁夏大学农学院, 银川, 宁夏 750021, 中国.
推荐引用方式 GB/T 7714	刘吉利,吴娜. 施氮量对柳枝稷生物质产量和水肥利用特性的影响[J]. 宁夏大学,2014,23(7):166-171.
APA	刘吉利,&吴娜.(2014).施氮量对柳枝稷生物质产量和水肥利用特性的影响.西北农业学报,23(7),166-171.
MLA	刘吉利,et al."施氮量对柳枝稷生物质产量和水肥利用特性的影响".西北农业学报 23.7(2014):166-171.