Straw application coupled with N and P supply enhanced microbial biomass, enzymatic activity, and carbon use efficiency in saline soil

doi:10.1016/j.apsoil.2021.104128

YIC-IR > 中国科学院海岸带环境过程与生态修复重点实验室 > 海岸带环境过程实验室

	Straw application coupled with N and P supply enhanced microbial biomass, enzymatic activity, and carbon use efficiency in saline soil
	Xie, Wenjun 1,2; Zhang, Yanpeng 2; Li, Jianyong 4; Wei, Shoucai 2; Li, Xueping 2; Yu, Hao 2; Guan, Bo3
发表期刊	APPLIED SOIL ECOLOGY
ISSN	0929-1393
	2021-12-01
卷号	168 页码:8
关键词	Straw decomposition Microbial biomass Enzymatic activity Microbial C use efficiency
DOI	10.1016/j.apsoil.2021.104128
通讯作者	Xie, Wenjun(xwjeric@163.com) ; Guan, Bo(bguan@yic.ac.cn)
英文摘要	Straw application is an efficient technology in saline soil improvement; however, the influence of nutrient (N and P) supply in this process on reclaiming saline land remains unclear. In the present study, N and P addition at different levels was thus employed in a wheat straw applied saline soil to investigate the responses of straw decomposition, soil enzymes (phosphatase, APA; beta-glucosidase, BG; protease, PA; and urease, UA), and microbial carbon (C) use efficiency (CUE). In a 28-d soil incubation, five treatments were performed, i.e., ST, LO, MI, HI (representing straw with zero, low, medium, and high N and P inputs, respectively), and CK (without straw and nutrient). The results showed that straw decomposition and microbial biomass were significantly enhanced with the addition of N and P. The activities of APA, BG, PA, and UA increased to varying degrees, while the influence on biomass-specific activities changed with enzyme type under straw and nutrient application. Compared with ST, the addition of N and P decreased soil cumulative C levels in CO2 (CO2-C) evolution and microbial metabolic quotient (qCO(2)) by 4.1%-21.3% and 15.1%-38.9%, respectively. The values of CUE were in the following orders: MI > LO > HI approximate to ST at 14 d and LO > HI > MI > ST at 28 d, suggesting that N and P supply could increase CUE, but the effect on CUE could not enhance with increasing N and P input levels. Soil organic C contents were significantly positively correlated with the amount of straw decomposition and MBN, and significantly negatively correlated with qCO(2). Hence, we suggest that adequate N and P supply may be an effective practice for increasing C sequestration in saline soil through straw application.
资助机构	National Natural Science Foundation of China ; Key Research and Development Program of Shandong Province
收录类别	SCI
语种	英语
关键词[WOS]	ORGANIC-MATTER ; STOICHIOMETRY ; NITROGEN ; GROWTH ; LITTER ; MINERALIZATION ; AMENDMENTS ; COMMUNITY ; RESIDUES ; BIOCHAR
研究领域[WOS]	Agriculture
WOS记录号	WOS:000701612500007
引用统计	被引频次：10[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.yic.ac.cn/handle/133337/30745
专题	中国科学院海岸带环境过程与生态修复重点实验室_海岸带环境过程实验室
通讯作者	Xie, Wenjun; Guan, Bo
作者单位	1.Qingdao Agr Univ, Coll Resources & Environm Sci, Qingdao, Shandong, Peoples R China 2.Binzhou Univ, Key Lab Instrumental Anal Binzhou City, Sch Biol & Environm Engn, Binzhou, Shandong, Peoples R China 3.Chinese Acad Sci, Yantai Inst Coastal Zone Res, Yantai, Shandong, Peoples R China 4.Tech Ctr Jinan Customs, Food Safety Testing Lab, Jinan, Shandong, Peoples R China
推荐引用方式 GB/T 7714	Xie, Wenjun,Zhang, Yanpeng,Li, Jianyong,et al. Straw application coupled with N and P supply enhanced microbial biomass, enzymatic activity, and carbon use efficiency in saline soil[J]. APPLIED SOIL ECOLOGY,2021,168:8.
APA	Xie, Wenjun.,Zhang, Yanpeng.,Li, Jianyong.,Wei, Shoucai.,Li, Xueping.,...&Guan, Bo.(2021).Straw application coupled with N and P supply enhanced microbial biomass, enzymatic activity, and carbon use efficiency in saline soil.APPLIED SOIL ECOLOGY,168,8.
MLA	Xie, Wenjun,et al."Straw application coupled with N and P supply enhanced microbial biomass, enzymatic activity, and carbon use efficiency in saline soil".APPLIED SOIL ECOLOGY 168(2021):8.