干旱区生态环境知识资源中心(Arid): Irrigation water salinity and N fertilization: Effects on ammonia oxidizer abundance, enzyme activity and cotton growth in a drip irrigated cotton field

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	Irrigation water salinity and N fertilization: Effects on ammonia oxidizer abundance, enzyme activity and cotton growth in a drip irrigated cotton field
	Min Wei; Guo Huijuan; Zhang Wen; Zhou Guangwei; Ma Lijuan; Ye Jun; Hou Zhenan
来源期刊	Journal of Integrative Agriculture
ISSN	2095-3119
出版年	2016
卷号	15 期号:5 页码:1121-1131
英文摘要	Use of saline water in irrigated agriculture has become an important means for alleviating water scarcity in arid and semi-arid regions. The objective of this field experiment was to evaluate the effects of irrigation water salinity and N fertilization on soil physicochemical and biological properties related to nitrification and denitrification. A 3*2 factorial design was used with three levels of irrigation water salinity (0.35, 4.61 and 8.04 dS m~(-1)) and two N rates (0 and 360 kg N ha-1). The results indicated that irrigation water salinity and N fertilization had significant effects on many soil physicochemical properties including water content, salinity, pH, NH_4-N concentration, and NO_3-N concentration. The abundance (i.e., gene copy number) of ammonia-oxidizing archaea (AOA) was greater than that of ammonia-oxidizing bacteria (AOB) in all treatments. Irrigation water salinity had no significant effect on the abundance of AOA or AOB in unfertilized plots. However, saline irrigation water (i.e., the 4.61 and 8.04 dS m~(-1) treatments) reduced AOA abundance, AOB abundance and potential nitrification rate in N fertilized plots. Regardless of N application rate, saline irrigation water increased urease activity but reduced the activities of both nitrate reductase and nitrite reductase. Irrigation with saline irrigation water significantly reduced cotton biomass, N uptake and yield. Nitrogen application exacerbated the negative effect of saline water. These results suggest that brackish water and saline water irrigation could significantly reduce both the abundance of ammonia oxidizers and potential nitrification rates. The AOA may play a more important role than AOB in nitrification in desert soil.
英文关键词	saline water nitrogen fertilizer ammonia-oxidizing microorganisms enzyme activity cotton yield
类型	Article
语种	英语
开放获取类型	Other Gold
收录类别	CSCD
WOS研究方向	Agriculture
CSCD记录号	CSCD:5719591
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/335654
作者单位	Min Wei, Department of Resources and Environmental Science, Shihezi University, Shihezi, Xinjiang 832003, China.; Guo Huijuan, Department of Resources and Environmental Science, Shihezi University, Shihezi, Xinjiang 832003, China.; Zhang Wen, Department of Resources and Environmental Science, Shihezi University, Shihezi, Xinjiang 832003, China.; Zhou Guangwei, Department of Resources and Environmental Science, Shihezi University, Shihezi, Xinjiang 832003, China.; Ma Lijuan, Department of Resources and Environmental Science, Shihezi University, Shihezi, Xinjiang 832003, China.; Ye Jun, Department of Resources and Environmental Science, Shihezi University, Shihezi, Xinjiang 832003, China.; Hou Zhenan, Department of Resources and Environmental Science, Shihezi University, Shihezi, Xinjiang 832003, China.
推荐引用方式 GB/T 7714	Min Wei,Guo Huijuan,Zhang Wen,et al. Irrigation water salinity and N fertilization: Effects on ammonia oxidizer abundance, enzyme activity and cotton growth in a drip irrigated cotton field[J],2016,15(5):1121-1131.
APA	Min Wei.,Guo Huijuan.,Zhang Wen.,Zhou Guangwei.,Ma Lijuan.,...&Hou Zhenan.(2016).Irrigation water salinity and N fertilization: Effects on ammonia oxidizer abundance, enzyme activity and cotton growth in a drip irrigated cotton field.Journal of Integrative Agriculture,15(5),1121-1131.
MLA	Min Wei,et al."Irrigation water salinity and N fertilization: Effects on ammonia oxidizer abundance, enzyme activity and cotton growth in a drip irrigated cotton field".Journal of Integrative Agriculture 15.5(2016):1121-1131.