干旱区生态环境知识资源中心(Arid): 河西走廊绿洲灌区灌漠土肥料利用率研究

Arid

	河西走廊绿洲灌区灌漠土肥料利用率研究
其他题名	Study on fertilizer utilization ratio of irrigated desert soil in Hexi Corridor oasis
	索东让
ISSN	1000-7601
出版年	2008
卷号	26 期号:2 页码:18-27,37
中文摘要	通过长期定位试验,用差减法研究了河西走廊绿洲灌区质地中壤的灌漠土肥料利用率演变.结果表明,试验初年当季利用率并不高,化肥连施氮、磷、钾利用率分别为24.0%～28.0%、17.2%～20.9%和16.7%～22.1%;有机肥与化肥结合施用分别依次为25.5%～28.1%、10.2%～12.6%和23.1%～30.0%.化肥长期连施氮、磷、钾总利用率47.9%～63.8%、22.5%～38.8%和30.6%～54.6%,比初始年利用率分别依次增加10.7%～39.8%、6.1%～21.6%和8.5%～37.9%;有机肥与化肥结合施用增加了投入量,降低了利用率,氮、磷、钾总利用率分别为40.8%～50.3%、17.0%～19.0%、32.1%～49.5%,比初始年利用率分别依次增加14.0%～24.8%、5.5%～6.8%和9.0%～19.5%.施用有机肥基础上减少磷化肥用量是提高利用率的有效措施;增施化学钾肥是平衡土壤钾素的必须措施.
英文摘要	In the long-term stationary test,changes of fertilizer utilization ratio of irrigated desert soil in Hexi Corridor oasis were studied by using the subtraction method.The results showed that the utilization ratio in the initial year was not high.In continuous application of chemical fertilizers,the utilization ratio of nitrogen,phosphorus,potassium was 24.0%～28.0%,17.2%～20.9% and 16.7%～22.1% respectively.In combined application of chemical fertilizers and organic fertilizers,the utilization ration of N,K and P was 25.5%～28.1%,10.2%～12.6% and 23.1%～30.0%.After long-term continuous application of chemical fertilizers,the total utilization ratio of N,K and P was 47.9%～63.8%,22.5%～38.8% and 30.6%～54.6%,increasing by 10.7%～39.8%,6.1%～21.6% and 8.5%～37.9% than the initial year.Combined application of chemical fertilizers and organic fertilizers increased the amount of fertilization and reduced the utilization ratio,and the utilization ratio was 40.8%～50.3%,17.0%～19.0% and 32.1%～49.5%,increasing by 14.0%～24.8%,5.5%～6.8% and 9.0%～19.5% than the initial year.It is an effective way for promoting fertilizer utilization ratio to reduce application chemical P fertilizer on the base of organic fertilizer.Furthermore,it is necessary to increase chemical K fertilization for the balance of K content in the soil.
中文关键词	氮磷钾肥 ; 肥料利用率 ; 灌漠土 ; 长期定位试验 ; 河西走廊
英文关键词	nitrogen phosphorus and potassium fertilizers fertilizer utilization ratio irrigated desert soil long-term stationary test Hexi Corridor
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:3245032
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/222230
作者单位	甘肃省张掖市农科所, 张掖, 甘肃 734000, 中国
推荐引用方式 GB/T 7714	索东让. 河西走廊绿洲灌区灌漠土肥料利用率研究[J],2008,26(2):18-27,37.
APA	索东让.(2008).河西走廊绿洲灌区灌漠土肥料利用率研究.,26(2),18-27,37.
MLA	索东让."河西走廊绿洲灌区灌漠土肥料利用率研究".26.2(2008):18-27,37.

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