干旱区生态环境知识资源中心(Arid): Interspecific root interactions and water-use efficiency of intercropped proso millet and mung bean

Arid

DOI	10.1016/j.eja.2020.126034
	Interspecific root interactions and water-use efficiency of intercropped proso millet and mung bean
	Gong, Xiangwei 1; Dang, Ke 1; Lv, Siming 1; Zhao, Guan 1,2; Tian, Lixin 1; Luo, Yan 1; Feng, Baili 1
通讯作者	Feng, Baili
来源期刊	EUROPEAN JOURNAL OF AGRONOMY
ISSN	1161-0301
EISSN	1873-7331
出版年	2020
卷号	115
英文摘要	Proso millet (Panicum miliaceum L.)/mung bean (Vigna radiata L.) intercropping could serve as a new cereal/legume planting pattern to increase crop production. However, how these two crop species compete for resources by stimulating root development and water uptake is unknown. An experiment was conducted at the Northwest A&F University experimental site in northwestern China from 2017 to 2019 to investigate the mechanisms governing the yield responses of both crops and compare interspecific interactions by analyzing the root distribution and water-use efficiency (WUE) of the crops. Intercropped proso millet dominated, as indicated by the highly positive aggressivity (Apm; averaging 1.66) and relative crowding coefficient (Kpm; averaging 2.66). The root growth and distribution of both crops increased under intercropping, with lateral expansion to the middle interrow spaces during the cogrowth period, resulting in greater root length density, surface area density, and volume density in the upper layer (0-50 cm) and close to the plants. This allowed the absorption of more soil water, which helped increase the WUE of intercropped proso millet. These improvements occurred due to significant correlations between soil water content and root structure. However, the relatively short mung bean was shaded by the taller proso millet, creating a disadvantage reflected by the decreased plant biomass and WUE of the former. Compared with grain yield under monocultures, the grain yield of the intercropped proso millet and mung bean increased by 13.9-50.0 % and decreased by 31.9-47.0 %, respectively. Two rows of proso millet intercropped with four rows of mung bean (2P4M) is recommended, as this system, although reducing mung bean yields, increases proso millet yields and enables the greatest land-use efficiency in arid regions of Northwest China.
英文关键词	Diversification Grain yield Legume Polyculture Root distribution
类型	Article
语种	英语
国家	Peoples R China
收录类别	SCI-E
WOS记录号	WOS:000528197200018
WOS关键词	CROP PRODUCTIVITY ; SOIL-TEMPERATURE ; SEMIARID REGIONS ; NUTRIENT-UPTAKE ; MAIZE ; YIELD ; COMPETITION ; WHEAT ; WHEAT/MAIZE ; SYSTEMS
WOS类目	Agronomy
WOS研究方向	Agriculture
来源机构	西北农林科技大学
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/314487
作者单位	1.Northwest A&F Univ, Coll Agron, Shaanxi Res Stn Crop Gene Resources & Germplasm, State Key Lab Crop Stress Biol Arid Areas,Minist, Yangling 712100, Shaanxi, Peoples R China; 2.Husb Comprehens Serv Ctr Jiama Town, Maizhokunggar 850212, Tibet, Peoples R China
推荐引用方式 GB/T 7714	Gong, Xiangwei,Dang, Ke,Lv, Siming,et al. Interspecific root interactions and water-use efficiency of intercropped proso millet and mung bean[J]. 西北农林科技大学,2020,115.
APA	Gong, Xiangwei.,Dang, Ke.,Lv, Siming.,Zhao, Guan.,Tian, Lixin.,...&Feng, Baili.(2020).Interspecific root interactions and water-use efficiency of intercropped proso millet and mung bean.EUROPEAN JOURNAL OF AGRONOMY,115.
MLA	Gong, Xiangwei,et al."Interspecific root interactions and water-use efficiency of intercropped proso millet and mung bean".EUROPEAN JOURNAL OF AGRONOMY 115(2020).