干旱区生态环境知识资源中心(Arid): Intercropped alfalfa and spring wheat reduces soil alkali-salinity in the arid area of northwestern China

Arid

DOI	10.1007/s11104-022-05846-y
	Intercropped alfalfa and spring wheat reduces soil alkali-salinity in the arid area of northwestern China
	Su, Kaiqi; Mu, Le; Zhou, Tao; Kamran, Muhammad; Yang, Huimin
通讯作者	Yang, HM
来源期刊	PLANT AND SOIL
ISSN	0032-079X
EISSN	1573-5036
出版年	2022
英文摘要	Background and AimsThe intercropping has great advantages in production gain, resources use and soil quality improvement. However, the effects of perennial forage legumes intercropped with annual grain crop on soil alkali-salinity was not well revealed. This study aimed to propose a spring wheat (Triticum aestivum L.)/alfalfa (Medicago sativa L.) intercropping and reveal whether this cropping system could ameliorate soil salinity. MethodsA two-year field experiment was conducted under 3 cropping systems at 3 irrigation amounts in the inland arid area of northwestern China. The cropping systems were sole spring wheat cropping (W), 12 rows spring wheat/4 rows alfalfa intercropping (W12A4) and 8 rows spring wheat/4 rows alfalfa intercropping (W8A4), and irrigation amounts included 450 (full irrigation amount, I-f), 360 (moderate irrigation amount, I-m) and 180 mm (low irrigation amount, I-l). ResultsThe intercropping system, especially W8A4, could more decrease soil salinity, pH and topsoil bulk density, and increase soil water content, topsoil porosity, and Ca2+ and Mg2+ contents, compared to W. Soil electrical conductivity was positively correlated with topsoil bulk density and negatively correlated with topsoil porosity, which were enhanced by intercropping and irrigation. There was weak correlation between soil electrical conductivity and soil water content. W12A4 and W8A4 led to reduction in contents of Na+, K+, Cl-, and SO42-, while Ca2+ and Mg2+ accumulated in the soil. ConclusionIntercropped alfalfa and spring wheat could reduce soil salinity, improve soil structure and ions balance. It was recommended that W8A4 with 360 mm irrigation could be extensively used in the arid area of northwestern China, gaining grain and forage production, and helping reduce salt accumulation.
英文关键词	Intercropping Soil alkali-salinity Cation and anion Irrigation Arid area
类型	Article ; Early Access
语种	英语
收录类别	SCI-E
WOS记录号	WOS:000906129900002
WOS关键词	WATER-USE EFFICIENCY ; ELECTRICAL-CONDUCTIVITY ; IRRIGATION WATER ; MAIZE ; YIELD ; PRODUCTIVITY ; GROWTH ; SYSTEM ; MULCH ; LAND
WOS类目	Agronomy ; Plant Sciences ; Soil Science
WOS研究方向	Agriculture ; Plant Sciences
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/393959
推荐引用方式 GB/T 7714	Su, Kaiqi,Mu, Le,Zhou, Tao,et al. Intercropped alfalfa and spring wheat reduces soil alkali-salinity in the arid area of northwestern China[J],2022.
APA	Su, Kaiqi,Mu, Le,Zhou, Tao,Kamran, Muhammad,&Yang, Huimin.(2022).Intercropped alfalfa and spring wheat reduces soil alkali-salinity in the arid area of northwestern China.PLANT AND SOIL.
MLA	Su, Kaiqi,et al."Intercropped alfalfa and spring wheat reduces soil alkali-salinity in the arid area of northwestern China".PLANT AND SOIL (2022).