干旱区生态环境知识资源中心(Arid): Canopy morphological changes and water use efficiency in winter wheat under different irrigation treatments

Arid

DOI	10.1016/S2095-3119(19)62750-4
	Canopy morphological changes and water use efficiency in winter wheat under different irrigation treatments
	Zhao Hong-xiang 1; Zhang Ping 2; Wang Yuan-yuan 2; Ning Tang-yuan 1; Xu Cai-long 3; Wang Pu 1
通讯作者	Xu Cai-long ; Wang Pu
来源期刊	JOURNAL OF INTEGRATIVE AGRICULTURE
ISSN	2095-3119
出版年	2020
卷号	19 期号:4 页码:1105-1116
英文摘要	Water is a key limiting factor in agriculture. Water resource shortages have become a serious threat to global food security. The development of water-saving irrigation techniques based on crop requirements is an important strategy to resolve water scarcity in arid and semi-arid regions. In this study, field experiments with winter wheat were performed at Wuqiao Experiment Station, China Agricultural University in two growing seasons in 2013-2015 to help develop such techniques. Three irrigation treatments were tested: no-irrigation (i.e., no water applied after sowing), limited-irrigation (i.e., 60 mm of water applied at jointing), and sufficient-irrigation (i.e., a total of 180 mm of water applied with 60 mm at turning green, jointing and anthesis stages, respectively). Leaf area index (LAI), light transmittance (LT), leaf angle (LA), transpiration rate (T-r), specific leaf weight, water use efficiency (WUE), and grain yield of winter wheat were measured. The highest WUE of wheat in the irrigated treatments was found under limited-irrigation and grain yield was only reduced by a small amount in this treatment compared to the sufficient irrigation treatment. The LAI and LA of wheat plants was lower under limited irrigation than sufficient irrigation, but canopy LT was greater. Moreover, the specific leaf weight of winter wheat was significantly lower under sufficient than limited irrigation conditions, while the leaf T-r was significantly higher. Correlation analysis showed that the increased LAI was associated with an increase in the leaf T-r, but the specific leaf weight had the opposite relationship with transpiration. Optimum WUE occurred over a reasonable range in leaf T-r. In conclusion, reduced irrigation can optimize wheat canopies and regulate water consumption, with only small reductions in final yield, ultimately leading to higher wheat WUE and water saving in arid and semi-arid regions.
英文关键词	winter wheat limited-irrigation canopy characteristics transpiration rate water use efficiency
类型	Article
语种	英语
国家	Peoples R China
开放获取类型	hybrid
收录类别	SCI-E
WOS记录号	WOS:000519600300022
WOS关键词	LEAF SIZE ; SUPPLEMENTAL IRRIGATION ; CROPPING SYSTEMS ; PHOTOSYNTHESIS ; ACCUMULATION ; RESPONSES ; GROWTH ; YIELD ; TRANSPIRATION ; TECHNOLOGIES
WOS类目	Agriculture, Multidisciplinary
WOS研究方向	Agriculture
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/2XILL650/315020
作者单位	1.Shandong Agr Univ, Coll Agron, Tai An 271018, Shandong, Peoples R China; 2.China Agr Univ, Coll Agron & Biotechnol, Beijing 100193, Peoples R China; 3.Chinese Acad Agr Sci, Inst Crop Sci, Beijing 100081, Peoples R China
推荐引用方式 GB/T 7714	Zhao Hong-xiang,Zhang Ping,Wang Yuan-yuan,et al. Canopy morphological changes and water use efficiency in winter wheat under different irrigation treatments[J]. 中国农业大学,2020,19(4):1105-1116.
APA	Zhao Hong-xiang,Zhang Ping,Wang Yuan-yuan,Ning Tang-yuan,Xu Cai-long,&Wang Pu.(2020).Canopy morphological changes and water use efficiency in winter wheat under different irrigation treatments.JOURNAL OF INTEGRATIVE AGRICULTURE,19(4),1105-1116.
MLA	Zhao Hong-xiang,et al."Canopy morphological changes and water use efficiency in winter wheat under different irrigation treatments".JOURNAL OF INTEGRATIVE AGRICULTURE 19.4(2020):1105-1116.