干旱区生态环境知识资源中心(Arid): Identifying agronomic options for better potato production and conserving water resources in the agro-pastoral ecotone in North China

Arid

DOI	10.1016/j.agrformet.2019.04.001
	Identifying agronomic options for better potato production and conserving water resources in the agro-pastoral ecotone in North China
	Tang, Jianzhao 1,2; Wang, Jing 1; Fang, Quanxiao 3; Dayananda, Buddhi 4; Yu, Qiang 3; Zhao, Peiyi 5; Yin, Hong 6; Pan, Xuebiao 1
通讯作者	Wang, Jing
来源期刊	AGRICULTURAL AND FOREST METEOROLOGY
ISSN	0168-1923
EISSN	1873-2240
出版年	2019
卷号	272 页码:91-101
英文摘要	Potato is a main food crop in the agro-pastoral ecotone (APE) of North China, but its yield is low and highly variable. Agronomic managements, such as irrigation, fertilization and intensive cropping systems, has been used for increasing potato yield but resulted in negative environmental sequences (e.g., soil dryness and groundwater table decline) in such arid and semi-arid regions. This study aims to quantify the agronomic options for better potato production and groundwater conservations based on field experiments together with APSIM-Potato model. The long-term simulated crop yield, economic income and environmental impact (surface soil water content and groundwater table) were analyzed for the different cropping systems of potato (continuous planting, CP; alternating planting and fallowing, APF; long-term continuous fallowing, LF) and irrigation scheduling (rainfed and one-four irrigations). The calibrated APSIM-Potato performed well in simulating the responses of soil water dynamics, leaf area index (LAI), biomass, evapotranspiration (ET) and yield of potato to different irrigation treatments. Long-term (1981-2010) simulated potato yield could be increased by 43.4-90.2% from rainfed yield if irrigation was applied from 60 to 240 mm and the yield gap between the potential and rainfed yields could be narrowed by 41.5-85.9%. Across the APE, CP with four irrigations (240 mm) produced the maximum income of 18,445 Yuan.ha(-1) while WUE was the highest for both CP and APF with two irrigations (120 mm). However, such irrigation amounts would decrease the groundwater table by 4.1-42 m across the APE during this period. Rainfed CP could enhance the groundwater table by 0-3 m but decrease available soil water content in 1 m depth by 15.5 mm per decade from 1981 to 2010. Rainfed APF and LF increase available soil water content in 1 m depth by 2-79 mm and 100-143 mm respectively. The study suggested that CP would decrease the soil moisture significantly and increase the risk of soil desertification in the APE. APF with one irrigation by harvesting rainwater could be a feasible way of maintaining soil moisture and groundwater conservation if government subsidy could guarantee the incomes of local farmers in the APE in North China.
英文关键词	APSIM-Potato Groundwater Available soil water content Potential yield Cropping system
类型	Article
语种	英语
国家	Peoples R China ; Australia
收录类别	SCI-E
WOS记录号	WOS:000469158400009
WOS关键词	CROPPING SYSTEMS ; FARMING SYSTEMS ; CLIMATE-CHANGE ; PLANTING DATE ; YIELD ; GROUNDWATER ; IRRIGATION ; IMPACT ; MAIZE ; CROPS
WOS类目	Agronomy ; Forestry ; Meteorology & Atmospheric Sciences
WOS研究方向	Agriculture ; Forestry ; Meteorology & Atmospheric Sciences
来源机构	西北农林科技大学 ; 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/2XILL650/213957
作者单位	1.China Agr Univ, Coll Resources & Environm Sci, Beijing 100193, Peoples R China; 2.Hebei Acad Sci, Inst Geog Sci, Engn Technol Res Ctr, Geog Informat Dev & Applicat Hebei, Shijiazhuang 050011, Hebei, Peoples R China; 3.Chinese Acad Sci, Inst Soil & Water Conservat, State Key Lab Soil Eros & Dryland Farming Loess P, Yangling 712100, Shaanxi, Peoples R China; 4.Univ Technol Sydney, Sch Life Sci, Broadway, NSW 2007, Australia; 5.Inner Mongolia Key Lab Dry Farming, Hohhot 010031, Peoples R China; 6.China Meteorol Adm, Natl Climate Ctr, Beijing 100081, Peoples R China
推荐引用方式 GB/T 7714	Tang, Jianzhao,Wang, Jing,Fang, Quanxiao,et al. Identifying agronomic options for better potato production and conserving water resources in the agro-pastoral ecotone in North China[J]. 西北农林科技大学, 中国农业大学,2019,272:91-101.
APA	Tang, Jianzhao.,Wang, Jing.,Fang, Quanxiao.,Dayananda, Buddhi.,Yu, Qiang.,...&Pan, Xuebiao.(2019).Identifying agronomic options for better potato production and conserving water resources in the agro-pastoral ecotone in North China.AGRICULTURAL AND FOREST METEOROLOGY,272,91-101.
MLA	Tang, Jianzhao,et al."Identifying agronomic options for better potato production and conserving water resources in the agro-pastoral ecotone in North China".AGRICULTURAL AND FOREST METEOROLOGY 272(2019):91-101.