干旱区生态环境知识资源中心(Arid): 灌溉与施氮量对黑河中游边缘绿洲沙地青贮玉米产量及水氮利用效率的影响

Arid

	灌溉与施氮量对黑河中游边缘绿洲沙地青贮玉米产量及水氮利用效率的影响
其他题名	Effects of irrigation and nitrogen amounts on yield,water and nitrogen use efficiencies of silage maize in marginal oasis regions of the Heihe River Basin
	解婷婷; 苏培玺
来源期刊	干旱地区农业研究
ISSN	1000-7601
出版年	2011
卷号	29 期号:2 页码:72-76
中文摘要	在黑河中游边缘绿洲地区,通过田间试验,研究不同水氮组合对青贮玉米产量及水分和氮肥利用效率的影响。结果表明:与高水氮(W_1F_1)相比,其它各处理均使青贮玉米的株高降低、根冠比增大,根深增加(除W_1F_2外),其中低水肥(W_3F_2)的株高、根深、根冠比变化均最大,株高降低了14.1%,根深和根冠比增加了13.3%和88.9%。在同一灌溉量下,随施氮量增加青贮玉米的地上生物产量均提高,但在低灌溉处理条件下随施氮量的增加其增产效果相对明显;同一施氮量下,随着灌溉量的增加,青贮玉米的地上生物鲜重也均提高,但在低肥处理下,随灌溉量的增加青贮玉米生物产量的增加效果最好。两种氮肥水平下,水分利用效率均随灌溉量的增加呈减少的变化趋势,但氮肥利用效率却随灌溉量的增加呈增加的变化趋势。6种水肥组合方式下,高水肥(W_1F_1)的地上生物鲜重、总生物鲜重均最高,其值分别为87 t/hm~2、99 t/hm~2,低水肥(W_3F_2)地上生物鲜重、总生物鲜重最低,其值分别为73 t/hm~2和90 t/hm~2,但无显著差异,且W_3F_2氮肥利用效率比W_1F_1提高了13.2%。以上结果表明,在边缘绿洲区青贮玉米生产中,采用生育期灌水7 760 m~3/hm~2与220 kg/hm~2的施氮组合能获得较高的生物产量和水分、氮肥利用效率。
英文摘要	Effects of different water-nitrogen conditions on yield and water and nitrogen use efficiency were studied by field experiment in marginal oasis regions of Heihe River Basin.The results showed that: Compared with that of high water and fertilizer(W_1F_1),the other treatments decreased plant height,increased root-shoot ratio and the root depth(except of W_1F_2),among which the treatment of low water and nitrogen(W_3F_2) caused most remarkable change in plant height,root-shoot ratio and the root depth,and the plant height decreased by 14.1%,the root depth and root-shoot ratio increased by 13.3% and 88.9%,respectively.The above-ground biomass yield increased with nitrogen amount increasing in same irrigation amount,but the effect on production increase was more significant in low irrigation amount with nitrogen amount increasing;it also increased with irrigation amount increasing in same nitrogen amount,but the effect on production increase was the best in low fertilizer condition along with irrigation amount increasing.Water use efficiency presented decreasing trend with the increase of irrigation amount in two nitrogen conditions,but nitrogen use efficiency showed increasing trend.The above-ground biomass yield and total biomass yield in high water and fertilizer were maximum,and the values were 87 t/hm~2 and 99 t/hm~2,respectively.The low water and fertilizer were opposite to it,and the values were 73 t/hm~2 and 90 t/hm~2,but they had no significant difference,while the nitrogen use efficiency in W_3F_2 increased by 13.2% compared with W_1F_1.All these indicated that the high biomass yield and high water and nitrogen use efficiency could be acquired in the marginal oasis regions through adopting irrigation amount of 7 760 m~3/hm~2,accompanied by nitrogen fertilizer amount of 220 kg/hm~2.
中文关键词	青贮玉米 ; 水肥条件 ; 生物产量 ; 水分利用效率 ; 氮肥利用效率
英文关键词	silage maize water and fertilizer condition biomass yield water use efficiency nitrogen use efficiency
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:4470406
来源机构	中国科学院西北生态环境资源研究院
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/226411
作者单位	中国科学院寒区旱区环境与工程研究所临泽内陆河流域研究站植物逆境生理生态与生物技术实验室, 兰州, 甘肃 730000, 中国
推荐引用方式 GB/T 7714	解婷婷,苏培玺. 灌溉与施氮量对黑河中游边缘绿洲沙地青贮玉米产量及水氮利用效率的影响[J]. 中国科学院西北生态环境资源研究院,2011,29(2):72-76.
APA	解婷婷,&苏培玺.(2011).灌溉与施氮量对黑河中游边缘绿洲沙地青贮玉米产量及水氮利用效率的影响.干旱地区农业研究,29(2),72-76.
MLA	解婷婷,et al."灌溉与施氮量对黑河中游边缘绿洲沙地青贮玉米产量及水氮利用效率的影响".干旱地区农业研究 29.2(2011):72-76.