干旱区生态环境知识资源中心(Arid): 灌溉与施氮对留茬免耕春小麦氮素吸收和氮肥损失的影响

Arid

	灌溉与施氮对留茬免耕春小麦氮素吸收和氮肥损失的影响
其他题名	Effects of Irrigation and Nitrogen Supply Levels on Nitrogen Uptake and Fertilizer Nitrogen Loss of Spring Wheat on No-tillage with Stubble Standing Farmland
	刘青林 1; 张恩和 1; 王琦 2; 王田涛 1; 刘朝巍 1; 尹辉 3; 俞华林 1
来源期刊	水土保持学报
ISSN	1009-2242
出版年	2011
卷号	25 期号:4 页码:104-109
中文摘要	在甘肃省石羊河流域绿洲灌区,采用裂区设计大田试验,研究不同灌溉量(常规灌溉(327 mm)、节水 20%灌溉(261 mm)、节水40%灌溉(196 mm))和施氮量(0,140,221,300 kg/hm~2)对留茬免耕春小麦植株吸氮量、收获期土壤硝态氮(NO-3-N)含量和氮肥损失的影响。结果表明,在留茬免耕农田中,灌溉量从 196 mm增加到327 mm,小麦籽粒含氮量从1.55%增加到1.71%,植株吸氮量从134 kg/hm~2增加到190 kg/hm~2。当施氮量超过221 kg/hm~2时,籽粒含氮量、秸秆含氮量、植株吸氮量不再显著增加。施氮300,221,140 kg/hm~2处理的植株吸氮量比不施氮处理的分别提高47%,37%和18%;在春小麦收获期,土壤表层(0-60 cm)NO-3-N含量随灌溉量增加而减少,随施氮量增加而增加,灌溉和施氮对60 cm以下土壤NO-3-N含量影响不明显。与不施氮处理相比,施氮300,221,140 kg/hm~2的氮肥损失分别为186,137,94 kg/hm~2。
英文摘要	A combination of careful irrigation and nitrogen (N)management is needed to improve N uptake efficiency and to minimize fertilizer N loss in the arid oasis agricultural area of northwest China.A field experiment was conducted to investigate the effects of different irrigation and N application rates on plant N uptake,soil nitrate nitrogen (NO-3-N)distribution in soil profile and fertilizer N loss on no-tillage farmland with standing stubble in the oasis region of Shiyang river basin,Gansu province.The experiment followed a completely randomized split-plot design,taking flood irrigation (conventional irrigation (327 mm),20% water-saving irrigation (261 mm),40% water-saving irrigation (196 mm))and N fertilizer application rates (0,140,221,300 kg/hm~2)as the main-plot and split-plot,respectively.Under the experimental condition,nitrogen contents in grain yield increased from 1.55% to 1.71%,and plant N uptake increased from 134 kg/hm~2to 190 kg/hm~2within amount of irrigation water increased from 196 mm to 327 mm.Nitrogen contents in grain yield and in straw yield,and plant N uptake did not increase significantly when N rate was above 221 kg/hm~2.Compared with no N application,the increases of plant N uptake,in 300,221,140 kg/hm~2,were 47%,37% and 18%,respectively.At harvesting stage,the NO-3-N contents in 0-60 cm depth soil profiles decreased with the amounts of irrigation and increased with N supplies,and irrigation and nitrogen supply levels had not evidently affect on NO-3-N contents below 0-60 cm depth in soil.Compared with no N application,the increases of fertilizer N loss,in 300,221,140 kg/hm~2,were 186,137,94 kg/hm~2,respectively.
中文关键词	灌溉 ; 施氮 ; 植株吸氮量 ; 土壤硝态氮 ; 氮肥损失
英文关键词	irrigation nitrogen supply plant nitrogen uptake soil nitrate nitrogen fertilize nitrogen loss
语种	中文
国家	中国
收录类别	CSCD
WOS类目	AGRONOMY ; AGRICULTURE MULTIDISCIPLINARY ; AGRICULTURAL ENGINEERING
WOS研究方向	Agriculture
CSCD记录号	CSCD:4309905
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/2XILL650/227082
作者单位	1.甘肃农业大学农学院, 兰州, 甘肃 730070, 中国; 2.甘肃农业大学草业学院, 冻土工程国家重点实验室, 兰州, 甘肃 730070, 中国; 3.甘肃农业大学草业学院, 兰州, 甘肃 730070, 中国
推荐引用方式 GB/T 7714	刘青林,张恩和,王琦,等. 灌溉与施氮对留茬免耕春小麦氮素吸收和氮肥损失的影响[J]. 甘肃农业大学,2011,25(4):104-109.
APA	刘青林.,张恩和.,王琦.,王田涛.,刘朝巍.,...&俞华林.(2011).灌溉与施氮对留茬免耕春小麦氮素吸收和氮肥损失的影响.水土保持学报,25(4),104-109.
MLA	刘青林,et al."灌溉与施氮对留茬免耕春小麦氮素吸收和氮肥损失的影响".水土保持学报 25.4(2011):104-109.