The fate of fertilizer nitrogen in a high nitrate accumulated agricultural soil

doi:10.1038/srep21539

	The fate of fertilizer nitrogen in a high nitrate accumulated agricultural soil
	Lu, Caiyan 1; Quan, Zhi 1,2; Huang, Bin 1; Shi, Yi 1; Chen, Xin 1; Zhang, Haiyang 2; Fang, Yunting 2
刊名	SCIENTIFIC REPORTS
	2016-02-12
卷号	6
ISSN号	2045-2322
DOI	10.1038/srep21539
英文摘要	Well-acclimatized nitrifiers in high-nitrate agricultural soils can quickly nitrify NH4+ into NO3- subject to leaching and denitrifying loss. A 120-day incubation experiment was conducted using a greenhouse soil to explore the fates of applied fertilizer N entering into seven soil N pools and to examine if green manure (as ryegrass) co-application can increase immobilization of the applied N into relatively stable N pools and thereby reduce NO3- accumulation and loss. We found that 87-92% of the applied N-15-labelled NH4+ was rapidly recovered as NO3- since day 3 and only 2-4% as microbial biomass and soil organic matter (SOM), while ryegrass co-application significantly decreased its recovery as NO3 but enhanced its recovery as SOM (17%) at the end of incubation. The trade-off relationship between N-15 recoveries in microbial biomass and SOM indicated that ryegrass co-application stabilized newly immobilized N via initial microbial uptake and later breakdown. Nevertheless, ryegrass application didn't decrease soil total NO3- accumulation due to its own decay. Our results suggest that green manure co-application can increase immobilization of applied N into stable organic N via microbial turnover, but the quantity and quality of green manure should be well considered to reduce N release from itself.
WOS研究方向	Science & Technology - Other Topics
语种	英语
出版者	NATURE PUBLISHING GROUP
WOS记录号	WOS:000369934000001
内容类型	期刊论文
源URL	[http://210.72.129.5/handle/321005/122449]
专题	中国科学院沈阳应用生态研究所
通讯作者	Lu, Caiyan
作者单位	1.Chinese Acad Sci, Inst Appl Ecol, Key Lab Pollut Ecol & Environm Engn, Shenyang 110016, Peoples R China 2.Chinese Acad Sci, Inst Appl Ecol, State Key Lab Forest & Soil Ecol, Shenyang 110164, Peoples R China
推荐引用方式 GB/T 7714	Lu, Caiyan,Quan, Zhi,Huang, Bin,et al. The fate of fertilizer nitrogen in a high nitrate accumulated agricultural soil[J]. SCIENTIFIC REPORTS,2016,6.
APA	Lu, Caiyan.,Quan, Zhi.,Huang, Bin.,Shi, Yi.,Chen, Xin.,...&Fang, Yunting.(2016).The fate of fertilizer nitrogen in a high nitrate accumulated agricultural soil.SCIENTIFIC REPORTS,6.
MLA	Lu, Caiyan,et al."The fate of fertilizer nitrogen in a high nitrate accumulated agricultural soil".SCIENTIFIC REPORTS 6(2016).