干旱区生态环境知识资源中心(Arid): Dynamic process-based modelling of crop growth and competitive water extraction in relay strip intercropping: Model development and application to wheat-maize intercropping

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DOI	10.1016/j.fcr.2019.107613
	Dynamic process-based modelling of crop growth and competitive water extraction in relay strip intercropping: Model development and application to wheat-maize intercropping
	Tan Meixiu 1,2,5; Fang, Gou 2,3; Stomph, Tjeerd Jan 2; Jing, Wang 1; Wen, Yin 4; Zhang Lizhen 1; Qiang, Chai 4; van der Werf, Wopke 2
通讯作者	Jing, Wang ; van der Werf, Wopke
来源期刊	FIELD CROPS RESEARCH
ISSN	0378-4290
EISSN	1872-6852
出版年	2020
卷号	246
英文摘要	Strip intercropping increases land use efficiency but the effect on water use efficiency is less well-known. Here we develop a modelling method to simulate the growth of an intercrop taking into account the acquisition of light and water by the component species in order to calculate the efficacy of light and water acquisition in an intercropping system as compared to sole crops. The model is parameterized, calibrated and validated using data on wheat-maize intercropping in Gansu province, Northwest China. Observed above-ground biomass was 1630 g M-2 for sole wheat and 1334 g M-2 for intercropped wheat while it was 3023 g M-2 for sole maize and 2259 g M-2 for intercropped maize. The average water use was 405 mm in sole wheat, 595 mm in sole maize and 711 mm in wheat-maize intercropping. Based on observed yields, the land equivalent ratio (LER) was 1.59 and the water equivalent ratio (WER) was 1.14, where LER and WER express the relative amounts of land and water needed to achieve the yields obtained in a unit area of intercrop using sole crops. These results indicate that relay strip intercropping of wheat and maize achieves an increase of land use efficiency of 59% and of water use efficiency of 14%. Overall the intercrop model gave satisfactory predictions, with coefficients of efficiency (CE) in validation of 0.86-0.97, 0.90-0.95, 0.85-0.91 and 0.98 for biomass of sole wheat, sole maize, intercropped wheat, and intercropped maize, respectively. Overall CE of water use was 0.95. Simulated LER and WER were similar to observed LER and WER. The results show that intercropping could be used to obtain more yield on less land with less water. Policies that limit water use per unit land and prohibit the use of intercropping on the basis of its high water use per unit area may therefore be counter-productive. The model for intercrop growth and development under water limitation may be used for exploring production possibilities under land and water constraints.
英文关键词	Water use efficiency LER WER AquaCrop
类型	Article
语种	英语
国家	Peoples R China ; Netherlands ; New Zealand
开放获取类型	hybrid, Green Published
收录类别	SCI-E
WOS记录号	WOS:000509631600003
WOS关键词	SIMULATE YIELD RESPONSE ; LAND EQUIVALENT RATIO ; RADIATION INTERCEPTION ; RESOURCE CAPTURE ; ARID REGION ; SOIL ; CARBON ; PRODUCTIVITY ; COEFFICIENT ; EFFICIENCY
WOS类目	Agronomy
WOS研究方向	Agriculture
EI主题词	2020-02-01
来源机构	中国农业大学
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/312757
作者单位	1.China Agr Univ, Coll Resources & Environm Sci, Beijing, Peoples R China; 2.Wageningen Univ, Ctr Crop Syst Anal, Droevendaalsesteeg 1, NL-6708PB Wageningen, Netherlands; 3.Bragato Res Inst, 85 Budge 94,POB 845, Blenheim 7240, New Zealand; 4.Gansu Prov Key Lab Aridland Crop Sci, Lanzhou 730070, Peoples R China; 5.Wageningen Univ, Soil Biol Grp, Droevendaalsesteeg 2, NL-6708PB Wageningen, Netherlands
推荐引用方式 GB/T 7714	Tan Meixiu,Fang, Gou,Stomph, Tjeerd Jan,et al. Dynamic process-based modelling of crop growth and competitive water extraction in relay strip intercropping: Model development and application to wheat-maize intercropping[J]. 中国农业大学,2020,246.
APA	Tan Meixiu.,Fang, Gou.,Stomph, Tjeerd Jan.,Jing, Wang.,Wen, Yin.,...&van der Werf, Wopke.(2020).Dynamic process-based modelling of crop growth and competitive water extraction in relay strip intercropping: Model development and application to wheat-maize intercropping.FIELD CROPS RESEARCH,246.
MLA	Tan Meixiu,et al."Dynamic process-based modelling of crop growth and competitive water extraction in relay strip intercropping: Model development and application to wheat-maize intercropping".FIELD CROPS RESEARCH 246(2020).