干旱区生态环境知识资源中心(Arid): Different tree age affects light competition and yield in wheat grown as a companion crop in jujube-wheat agroforestry

Arid

DOI	10.1007/s10457-017-0160-z
	Different tree age affects light competition and yield in wheat grown as a companion crop in jujube-wheat agroforestry
	Zhang, W.1; Wang, B. J.1; Gan, Y. W.1; Duan, Z. P.1; Hao, X. D.1; Xu, W. L.2; Li, L. H.1
通讯作者	Li, L. H.
来源期刊	AGROFORESTRY SYSTEMS
ISSN	0167-4366
EISSN	1572-9680
出版年	2019
卷号	93 期号:2 页码:653-664
英文摘要	Effects of tree shading on crops within an agroforestry system in Hetian oasis regions in northwestern China are poorly understood. Measurements of light intensity, light use efficiency (LUE), light extinction coefficient, leaf area index (LAI), crop yield and biomass were studied in determining the effects of tree shading on crop yield in a jujube (Zizyphus jujuba Mill.)/wheat (Triticum aestivum L.) intercropping system. The treatments comprised (1) sole-cropped wheat, (2) 6-year-old sole jujube trees, (3) 8-year-old sole jujube trees, (4) 10-year-old sole jujube trees, (5) intercropping of wheat/6-year-old jujube trees, (6) intercropping of wheat/8-year-old jujube trees and (7) intercropping of wheat/10-year-old jujube trees. We found that the land equivalent ratios (LERs) of all three jujube tree/wheat treatments were larger than one and this indicated that plant growth factors were used more efficiently by the intercrop than by sole crops and the land use advantages of the intercropping systems were significantly greater than monoculture crops. Because of shading by trees, there was a decrease in intercropped wheat LAI, growth and yield, and the fruit yield of the intercropped jujube trees also decreased to a certain degree. The light interception of intercropped wheat was significantly decreased by different tree ages up to a certain point. The LUE results ranged from 1.68 to 1.31 and 1.13g DM MJ [photosynthetically active radiation (PAR)](-1), indicating that LUE can be significantly affected by increasing tree age. Compared to intercropping 8-year-old jujube trees, a higher light extinction coefficient was found in intercropping 6- and 10-year-old jujube trees.
英文关键词	Light competition Light use efficiency Plant growth Yield Land equivalent ratio (LER) Leaf area index (LAI) Light extinction coefficient
类型	Article
语种	英语
国家	Peoples R China
收录类别	SCI-E
WOS记录号	WOS:000461545400023
WOS关键词	WALNUT JUGLANS-NIGRA ; ZEA-MAYS L. ; BLACK-WALNUT ; INTERSPECIFIC INTERACTIONS ; INTERCROPPING SYSTEM ; ALLEYCROPPING SYSTEM ; GROUND INTERACTIONS ; RELAY INTERCROPS ; USE EFFICIENCY ; PLANT-DENSITY
WOS类目	Agronomy ; Forestry
WOS研究方向	Agriculture ; Forestry
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/214067
作者单位	1.Shihezi Univ, Coll Agr, Shihezi 832003, Xinjiang, Peoples R China; 2.Xinjiang Acad Agr Sci, Inst Soil & Fertilizer & Agr Water Conservat, Urumqi 830091, Xinjiang, Peoples R China
推荐引用方式 GB/T 7714	Zhang, W.,Wang, B. J.,Gan, Y. W.,et al. Different tree age affects light competition and yield in wheat grown as a companion crop in jujube-wheat agroforestry[J],2019,93(2):653-664.
APA	Zhang, W..,Wang, B. J..,Gan, Y. W..,Duan, Z. P..,Hao, X. D..,...&Li, L. H..(2019).Different tree age affects light competition and yield in wheat grown as a companion crop in jujube-wheat agroforestry.AGROFORESTRY SYSTEMS,93(2),653-664.
MLA	Zhang, W.,et al."Different tree age affects light competition and yield in wheat grown as a companion crop in jujube-wheat agroforestry".AGROFORESTRY SYSTEMS 93.2(2019):653-664.