气候变化领域集成服务门户(CCPortal): Climate-smart irrigation strategy can mitigate agricultural water consumption while ensuring food security under a changing climate

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DOI	10.1016/j.agwat.2023.108663
	Climate-smart irrigation strategy can mitigate agricultural water consumption while ensuring food security under a changing climate
	Li, Mengna; Zhou, Shiwei; Shen, Shuaijie; Wang, Jiale; Yang, Yuhao; Wu, Yangzhong; Chen, Fu; Lei, Yongdeng
发表日期	2024
ISSN	0378-3774
EISSN	1873-2283
起始页码	292
卷号	292
英文摘要	North China Plain suffers from the world's most severe water scarcity and groundwater depletion due to intensive irrigation for agricultural production. It is imperative to reduce irrigation water consumption while safeguarding crop production and food security. This study conducted a quantitative analysis with deficit irrigation strategies for winter wheat using a water-driven AquaCrop model. After model calibration and validation with field experimental data, we analyzed the irrigation water demand, crop yield, and water productivity (WP) of winter wheat under various deficit irrigation scenarios. A set of optimal irrigation schedules were proposed for different climate years, which significantly mitigated irrigation water usage while sustaining high yields and WPs. The results indicated that despite the irrigation water demand of winter wheat under the future climate scenario was slightly higher than that in the historical period, their crop water sensitive periods (reviving, jointing, and flowering) remained the same. Therefore, we recommended adopting the same deficit irrigation schedules for the historical and future periods. In wet years, adopting a 50% deficit irrigation strategy only reduced crop yields by less than 5% compared with full irrigation, but it saved 1000-1100 m3 of water per hectare and contributed a WP higher than 1.88 kg/m3. While in normal and dry years, an optimal 25% deficit irrigation could sustain over 96% of the maximum yield, meanwhile it could save 650-800 m3/ha of water and achieve almost the same WP as full irrigation. These climate-smart irrigation strategies adapting to diverse climatic conditions largely mitigate agricultural water consumption while maximizing crop productivity and water use efficiency, which are essential for achieving precision irrigation and sustainable water management under a changing climate.
英文关键词	Climate change; Food security; Deficit irrigation; Water productivity; Winter wheat
语种	英语
WOS研究方向	Agriculture ; Water Resources
WOS类目	Agronomy ; Water Resources
WOS记录号	WOS:001154690800001
来源期刊	AGRICULTURAL WATER MANAGEMENT
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/302284
作者单位	China Agricultural University; Ministry of Agriculture & Rural Affairs
推荐引用方式 GB/T 7714	Li, Mengna,Zhou, Shiwei,Shen, Shuaijie,et al. Climate-smart irrigation strategy can mitigate agricultural water consumption while ensuring food security under a changing climate[J],2024,292.
APA	Li, Mengna.,Zhou, Shiwei.,Shen, Shuaijie.,Wang, Jiale.,Yang, Yuhao.,...&Lei, Yongdeng.(2024).Climate-smart irrigation strategy can mitigate agricultural water consumption while ensuring food security under a changing climate.AGRICULTURAL WATER MANAGEMENT,292.
MLA	Li, Mengna,et al."Climate-smart irrigation strategy can mitigate agricultural water consumption while ensuring food security under a changing climate".AGRICULTURAL WATER MANAGEMENT 292(2024).