Effects of straw application on coastal saline topsoil salinity and wheat yield trend

doi:10.1016/j.still.2017.01.007

	Effects of straw application on coastal saline topsoil salinity and wheat yield trend
	Xie, Wenjun 1; Wu, Lanfang 2; Zhang, Yanpeng 1; Wu, Tao 1; Li, Xueping 3; Ouyang, Zhu 2
刊名	SOIL & TILLAGE RESEARCH
	2017-06-01
卷号	169 页码:1-6
关键词	Straw application Soil salinity Salinity inhibiting efficiency N immobilization Wheat grain yield
ISSN号	0167-1987
DOI	10.1016/j.still.2017.01.007
通讯作者	Ouyang, Zhu(xwjeric@163.com)
英文摘要	Owing to an irrigation water shortage and a shallow underground water table in coastal zones, soil salinization is becoming a serious and complicated problem. Different practices are being explored to reduce its negative effect on land productivity. In this work, the effect of combined straw and inorganic N applications at different rates on topsoil (0-20 cm) salinity and wheat growth was evaluated in a coastal field. Maize straw was applied at the rates of 5.0 x 10(3) kg ha(-1)(S) and 1.0 x 10(4) kg ha(-1) (2S) and inorganic N was applied at the rates of 75 kg ha(-1)(N1/2), 150 kg ha(-1)(N), and 300 kg ha(-1)(N2). Treatment without addition of straw but with inorganic N application at the rate of 150 kg ha(-1) was used as the control (CK). Thus, there were six treatments: SN1/2, SN, SN2, 2SN, 2SN2, and CK. During the early growth stages (seedling, jointing, and booting) of wheat, straw application significantly decreased topsoil salinity from 13.8% to 30.4% in comparison to the CK treatment (p < 0.05), and the decrease was enhanced with increase in the straw application rate. This positive influence decreased substantially during wheat growth. Soil dissolved organic carbon and microbial biomass carbon both increased significantly (p < 0.05) after straw addition; in contrast, there was a significant reduction in available N from March to April. The greatest wheat grain yield and aboveground biomass were produced in 2SN2, and yield increased by 15.1% in comparison to CK. In contrast, yield decreased by 5.1-9.6% in SN, 2SN, and SN1/2. Thus, straw application may be an effective practice for reducing topsoil salinity in the coastal zones, and an adequate N supply should be applied to maximize crop yield. (C) 2017 Elsevier B.V. All rights reserved.
资助项目	National Key Technology R&D Program in the 12th Five-year Plan of China[2013BAD05B03] ; Key R&D Program of Shandong Province[2015GNC111006] ; Key R&D Program of Shandong Province[2015GNC111018] ; Shandong Provincial Education Department, China
WOS关键词	NORTH-CENTRAL CHINA ; SOILS ; CARBON ; BIOMASS ; IRRIGATION ; FRACTIONS ; COMMUNITY ; SYSTEMS ; IMPACT ; RETURN
WOS研究方向	Agriculture
语种	英语
出版者	ELSEVIER SCIENCE BV
WOS记录号	WOS:000397690400001
资助机构	National Key Technology R&D Program in the 12th Five-year Plan of China ; Key R&D Program of Shandong Province ; Shandong Provincial Education Department, China
内容类型	期刊论文
源URL	[http://ir.igsnrr.ac.cn/handle/311030/64655]
专题	中国科学院地理科学与资源研究所
通讯作者	Ouyang, Zhu
作者单位	1.Binzhou Univ, Coll Life Sci, Shandong Prov Key Lab Ecoenvironm Sci Yellow Delt, Key Lab Instrumental Anal Binzhou City, Binzhou, Shandong, Peoples R China 2.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Beijing 100101, Peoples R China 3.Binzhou Univ, Coll Resource & Environm, Binzhou, Shandong, Peoples R China
推荐引用方式 GB/T 7714	Xie, Wenjun,Wu, Lanfang,Zhang, Yanpeng,et al. Effects of straw application on coastal saline topsoil salinity and wheat yield trend[J]. SOIL & TILLAGE RESEARCH,2017,169:1-6.
APA	Xie, Wenjun,Wu, Lanfang,Zhang, Yanpeng,Wu, Tao,Li, Xueping,&Ouyang, Zhu.(2017).Effects of straw application on coastal saline topsoil salinity and wheat yield trend.SOIL & TILLAGE RESEARCH,169,1-6.
MLA	Xie, Wenjun,et al."Effects of straw application on coastal saline topsoil salinity and wheat yield trend".SOIL & TILLAGE RESEARCH 169(2017):1-6.