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Estimating the Root Water Uptake of Surface-Irrigated Apples Using Water Stable Isotopes and the Hydrus-1D Model

التفاصيل البيبلوغرافية
العنوان: Estimating the Root Water Uptake of Surface-Irrigated Apples Using Water Stable Isotopes and the Hydrus-1D Model
المؤلفون: Lijian Zheng, Juanjuan Ma, Xihuan Sun, Xianghong Guo, Qiyun Cheng, Xiaokai Shi
المصدر: Water, Vol 10, Iss 11, p 1624 (2018)
بيانات النشر: MDPI AG, 2018.
سنة النشر: 2018
المجموعة: LCC:Hydraulic engineering
LCC:Water supply for domestic and industrial purposes
مصطلحات موضوعية: water use, hydrogen and oxygen, numerical simulation, surface irrigation, apple, root water uptake, Hydraulic engineering, TC1-978, Water supply for domestic and industrial purposes, TD201-500
الوصف: The future production of irrigated fruit orchards in the Loess Plateau of China is threatened by a shortage of freshwater. To improve water use efficiency under conditions where irrigation is limited, it is necessary to quantify the root water uptake (RWU) of apple trees. The RWU of apple trees was estimated under surface irrigation using water stable isotope technology and the Hydrus-1D model. Using the Romero-Saltos and IsoSource models, the stable isotopes of water in stems, different soil depths, and different precipitation were analyzed in a 5-year-old dwarfing apple orchard during two seasons 2016 and 2017. Hydrus-1D model was able to simulate the RWU of apple using the maximum coefficient of determination (0.9), providing a root mean square error of 0.019 cm3 cm−3 and a relative error of 2.25%. The results showed that the main depth of RWU ranged from 0⁻60 cm during the growth season, with the main contribution occurring in the 0⁻40 cm depth. These findings indicated that reducing the traditional surface irrigation depth will be important for improving the irrigation water use efficiency.
نوع الوثيقة: article
وصف الملف: electronic resource
اللغة: English
تدمد: 2073-4441
Relation: https://www.mdpi.com/2073-4441/10/11/1624; https://doaj.org/toc/2073-4441
DOI: 10.3390/w10111624
URL الوصول: https://doaj.org/article/ba773e2adb90475dbbf08758f71c2b4b
رقم الأكسشن: edsdoj.ba773e2adb90475dbbf08758f71c2b4b
قاعدة البيانات: Directory of Open Access Journals
الوصف
تدمد:20734441
DOI:10.3390/w10111624