| Response of jujube growth to initial soil water content in rainfed regions in Loess Plateau |
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| DOI：10.7606/j.issn.1000-7601.2016.04.05 |
| Key Words: Ziziphus jujuba Mill Loess Plateau initial soil water content soil moisture yield |
| Author Name | Affiliation | | HUI Qian | College of Water Resources and Architectural Engineering, Northwest Agricultural and Forestry University, Yangling, Shaanxi 712100, China | | DONG Jian-guo | Institute of Soil and Water Conservation, Chinese Academy of Sciences and Ministry of Water Resources, Yangling, Shaanxin 712100, China | | WANG You-ke | College of Water Resources and Architectural Engineering, Northwest Agricultural and Forestry University, Yangling, Shaanxi 712100, China
Institute of Soil and Water Conservation, Chinese Academy of Sciences and Ministry of Water Resources, Yangling, Shaanxin 712100, China | | CHEN Dian-yu | College of Water Resources and Architectural Engineering, Northwest Agricultural and Forestry University, Yangling, Shaanxi 712100, China | | SHE Tan | College of Water Resources and Architectural Engineering, Northwest Agricultural and Forestry University, Yangling, Shaanxi 712100, China | | WANG Xiao-li | Forest Tree Seed Station of Yuyang District, Yulin City, Yulin, Shaanxin 719000, China |
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| Abstract: |
| With 6-year-old dwarfed densely Ziziphus jujuba Mill. as experimental materials, four different initial soil volumetric water content levels (plot 1, 15.17%; plot 2, 14.33%; plot 3, 11.34%; plot 4, 8.61%) were performed under rainfed conditions, and soil water variation, jujube growth, jujube water consumption and yield were determined. The results showed that under rainfed conditions, with the passage of time, soil volumetric water content of the four plots were nearly the same. There were significant differences among four plots. At low water conditions, dry layer of jujube plantation can be repaired through natural rainfall. Biomass and yield decreased as the initial soil water content decreased, and yield among plots were significantly different. The yield of four plots were 21 744.9, 18 648.0, 12 354.3, and 6 660.0 kg·hm-2, respectively, suggesting that considerable yield can also be obtained in normal precipitation year even if the initial soil water content under deficit conditions. Jujube with height of 0.9～1.2 m and crown of 0.5～0.9 m, had the high level of yield, as high as 21 744.9 kg·hm-2, indicating large potential of dwarfed densely jujubes. The results can be applied for local rainfed jujube production and management. |
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