Sustaining Yield of Winter Wheat under Alternate Irrigation Using Saline Water at Different Growth Stages: A Case Study in the North China Plain

文献类型： 外文期刊

第一作者： Soothar, Rajesh Kumar

作者： Soothar, Rajesh Kumar;Tankari, Moussa;Wang, Chao;Li, Li;Xing, Huanli;Gong, Daozhi;Wang, Yaosheng;Soothar, Rajesh Kumar;Tankari, Moussa;Wang, Chao;Li, Li;Xing, Huanli;Gong, Daozhi;Wang, Yaosheng;Soothar, Rajesh Kumar;Zhang, Wenying;Liu, Binhui

作者机构：

关键词： growth; saline irrigation; ion concentration; water productivity; soil salinity

期刊名称：SUSTAINABILITY （ 影响因子：3.251； 五年影响因子：3.473 ）

ISSN：

年卷期： 2019 年 11 卷 17 期

页码：

收录情况： SCI

摘要： Brackish water used for irrigation can restrict crop growth and lead to environmental problems. The alternate irrigation with saline water at different growth stages is still not well understood. Therefore, field trials were conducted during 2015-2018 in the NCP to investigate whether alternate irrigation is practicable for winter wheat production. The treatments comprised rain-fed cultivation (NI), fresh and saline water irrigation (FS), saline and fresh water irrigation (SF), saline water irrigation (SS) and fresh water irrigation (FF). The results showed that the grain yield was increased by 20% under SF and FS treatments compared to NI, while a minor decrease of 2% in grain yield was observed compared with FF treatment. The increased soil salinity and risk of long-term salt accumulation in the soil due to alternate irrigation during peak dry periods was insignificant due to leaching of salts from crop root zone during monsoon season. Although Na+ concentration in the leaves increased with saline irrigation, resulting in significantly lower K+:Na+ ratio in the leaves, the Na+ and K+ concentrations in the roots and grains were not affected. In conclusion, the alternate irrigation for winter wheat is a most promising option to harvest more yield and save fresh water resources.

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