中国科学院机构知识库网格
Chinese Academy of Sciences Institutional Repositories Grid
Mulched drip irrigation increases cotton yield and water use efficiency via improving fine root plasticity

文献类型:期刊论文

作者Wang, Jiangtao; Du, Gangfeng; Tian, Jingshan; Jiang, Chuangdao1; Zhang, Yali; Zhang, Wangfeng2
刊名AGRICULTURAL WATER MANAGEMENT
出版日期2021
卷号255
关键词Irrigation methods Cotton Spatial distribution of soil water Fine root plasticity Seed cotton yield Irrigation water use efficiency
ISSN号0378-3774
DOI10.1016/j.agwat.2021.106992
文献子类Article
英文摘要The morphological characteristics of crop roots, especially the plasticity of fine roots, are directly related to the crop's ability to obtain soil water. Mulched drip irrigation can effectively regulate soil water distribution to achieve high cotton yield with reduced water consumption. In the previous study, from the perspective of rootshoot coordination, we found that mulched drip irrigation reduced the growth redundancy of roots and improved the root productivity of cotton, thus achieving the goal of water-saving and increased yield. However, it is unclear if and how mulched drip irrigation enhances absorptive capacity of roots via regulating dry and wet soil areas and optimizing fine root morphology and distribution compared with traditional flood irrigation. To achieve this, the effects of fine root plasticity on the absorptive capacity of roots were studied in a two-year field experiment. Mulched drip irrigation (conventional drip irrigation and excessive drip irrigation) and traditional flood irrigation (reduced flood irrigation and conventional flood irrigation) were used, and soil water distribution and root distribution were determined. The results showed that compared with traditional flood irrigation, mulched drip irrigation significantly increased the soil water content (SWC) in the 0-60 cm soil layer and reduced the fluctuation amplitude of SWC at the flowering and boll stage of cotton. Mulched drip irrigation formed different dry and wet areas in the root zone, i.e., the SWC was higher in the shallow layer (0-40 cm) at 0-20 cm on both sides of the drip line, and most of the cotton roots were in the wet area. The higher SWC increased the distribution of fine roots in this area and shaped the shallow fine root system, which enhanced the cotton plant's ability to absorb soil water. Statistical analysis showed that the higher fine root biomass in the 0-40 cm soil layer at the late full boll stage of cotton under mulched drip irrigation was beneficial to increase aboveground biomass, thus increasing total bolls and seed cotton yield. However, compared with the irrigation amount of field production (390 mm), an excessive amount of irrigation (600 mm) reduced the seed cotton yield of mulched drip irrigation, resulting in the decrease of irrigation water use efficiency (IWUE). Therefore, mulched drip irrigation optimizes the distribution of fine roots and enhances water uptake by effectively regulating the water-root relationship, and thus improves seed cotton yield and IWUE.
学科主题Agronomy ; Water Resources
出版地AMSTERDAM
电子版国际标准刊号1873-2283
WOS关键词DRY-MATTER PRODUCTION ; SOIL-MOISTURE ; SPATIAL-DISTRIBUTION ; DEFICIT IRRIGATION ; FUNCTIONAL ROLES ; OXYGEN-TRANSPORT ; WINTER-WHEAT ; GRAIN-YIELD ; GROWTH ; FIELD
WOS研究方向Science Citation Index Expanded (SCI-EXPANDED)
语种英语
WOS记录号WOS:000687381100005
出版者ELSEVIER
资助机构National Key Research and Development Program of China [2018YFD1000907]
源URL[http://ir.ibcas.ac.cn/handle/2S10CLM1/26625]  
专题中科院北方资源植物重点实验室
作者单位1.Shihezi Univ, Coll Agr, Key Lab Oasis Ecoagr, Xinjiang Prod & Construct Corps, Shihezi 832003, Xinjiang, Peoples R China
2.Chinese Acad Sci, Inst Bot, Key Lab Plant Resources, Beijing 100093, Peoples R China
3.Shihezi Univ, Coll Agr, Shihezi 832003, Xinjiang, Peoples R China
推荐引用方式
GB/T 7714
Wang, Jiangtao,Du, Gangfeng,Tian, Jingshan,et al. Mulched drip irrigation increases cotton yield and water use efficiency via improving fine root plasticity[J]. AGRICULTURAL WATER MANAGEMENT,2021,255.
APA Wang, Jiangtao,Du, Gangfeng,Tian, Jingshan,Jiang, Chuangdao,Zhang, Yali,&Zhang, Wangfeng.(2021).Mulched drip irrigation increases cotton yield and water use efficiency via improving fine root plasticity.AGRICULTURAL WATER MANAGEMENT,255.
MLA Wang, Jiangtao,et al."Mulched drip irrigation increases cotton yield and water use efficiency via improving fine root plasticity".AGRICULTURAL WATER MANAGEMENT 255(2021).

入库方式: OAI收割

来源:植物研究所

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