干旱区生态环境知识资源中心(Arid): 沙坡头地区农田灌溉和施肥对氮淋溶量影响的研究

Arid

	沙坡头地区农田灌溉和施肥对氮淋溶量影响的研究
其他题名	Effect of Irrigation and Fertilization on Nitrogen Leach Loss in Field of Arid Shapotou Area
	贾晓红; 李新荣; 肖洪浪
来源期刊	中国沙漠
ISSN	1000-694X
出版年	2005
卷号	25 期号:2 页码:223-227
中文摘要	对沙坡头农田不同土壤类型养分和水分供给下0～2 m土壤层淋溶液的分析结果表明:不同类型土壤氮淋溶量差异显著( P <0.05);同一类型土壤随水肥供给强度的增加,氮淋溶有增加的趋势,特别是灌水次数、土壤水分含量处理和总灌溉量与氮淋溶量间有强正相关关系( P <0.05);低灌溉水平,氮淋溶量与施肥间无显著相关关系,而高灌溉水平下施肥和灌溉均是主导因子;灌淤土保持田间持水量40%及以下土壤水分所有施肥水平,氮淋溶量间差异不显著( P >0.05);风沙土低水低肥(保持田间持水量20%土壤水分)处理与灌淤土保持田间持水量40%及以下土壤水分处理所有施肥水平无显著差异( P >0.05),而风沙土高水高肥处理与灌淤土所有水肥处理间差异均显著( P <0.05),低水低肥将是风沙土最低的氮淋溶界限,在传统农业条件下对该类土壤进行改良是必要的.
英文摘要	Research on nitrogen leaching for two soil types under different nutrient supply and irrigation level was conducted. The result showed that the leach loss of nitrogen fertilizer was very different in two soils. The leach loss of nitrogen fertilizer increased with the increase of water and fertilizer supply. Irrigation became the main factor for the leach loss of fertilizer nitrogen, especially the total irrigation capacity, every irrigation amount (soil water holding level) and irrigation times, There was a distinct positive correlation between irrigation and nitrogen leach loss (P<0. 05). The relation was not remarkable between fertilizer application and nitrogen leach loss at low and medium irrigation level, but remarkable at high irrigation level. When soil moisture kept under 40% of the field capacity on anthropogenic-alluvial soil, the leach amount of fertilizer nitrogen was almost same under all fertilizer application(P>0. 05); There was no discrepancy at nitrogen leach loss between in anthropogenic-alluvial soil with soil moisture ≤40% field capacity and in sandy soil with soil moisture = 20% field capacity (P>0. 05), but discrepant under high water and fertilizer treatment. In order to protect environment and improve the efficiency of water-use and fertilizer, the sandy soil should be meliorated under traditional agriculture method (low water and fertilizer level).
中文关键词	沙坡头 ; 灌溉 ; 施肥 ; 氮淋溶量
英文关键词	Shapotou irrigation fertilization nitrogen leach loss
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:1953291
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/2XILL650/206968
作者单位	中国科学院寒区旱区环境与工程研究所,沙坡头沙漠试验研究站, 兰州, 甘肃 730000, 中国
推荐引用方式 GB/T 7714	贾晓红,李新荣,肖洪浪. 沙坡头地区农田灌溉和施肥对氮淋溶量影响的研究[J]. 中国科学院西北生态环境资源研究院,2005,25(2):223-227.
APA	贾晓红,李新荣,&肖洪浪.(2005).沙坡头地区农田灌溉和施肥对氮淋溶量影响的研究.中国沙漠,25(2),223-227.
MLA	贾晓红,et al."沙坡头地区农田灌溉和施肥对氮淋溶量影响的研究".中国沙漠 25.2(2005):223-227.