| Effect of circular arrangement of microporous infiltration irrigation on water distribution and yield of Lingwu long jujube |
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| DOI：10.7606/j.issn.1000-7601.2021.02.11 |
| Key Words: microporous infiltration irrigation circular layout Ziziphus jujuba Mill.cv.Lingwu long jujube yield water distribution |
| Author Name | Affiliation | | LI Xingqiang | School of Civil and Hydraulic Engineering, Ningxia University, Yinchuan, Ningxia 750021, China | | SUN Zhaojun | School of Civil and Hydraulic Engineering, Ningxia University, Yinchuan, Ningxia 750021, China
Institute of Environmental Engineering, Ningxia University, Yinchuan, Ningxia 750021, China
China-Arab Joint International Research Laboratory for Featured Resources and Environmental Governance in Arid Region, Yinchuan, Ningxia 750021,China | | JIAO Bingzhong | School of Civil and Hydraulic Engineering, Ningxia University, Yinchuan, Ningxia 750021, China | | ZHU Wengting | School of Civil and Hydraulic Engineering, Ningxia University, Yinchuan, Ningxia 750021, China | | HE Jun | Institute of Environmental Engineering, Ningxia University, Yinchuan, Ningxia 750021, China
China-Arab Joint International Research Laboratory for Featured Resources and Environmental Governance in Arid Region, Yinchuan, Ningxia 750021,China | | HAN Lei | Institute of Environmental Engineering, Ningxia University, Yinchuan, Ningxia 750021, China
China-Arab Joint International Research Laboratory for Featured Resources and Environmental Governance in Arid Region, Yinchuan, Ningxia 750021,China |
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| Abstract: |
| Taking 6-year-old Ziziphus jujuba Mill.cv.Lingwu long jujube as the research object, we implemented the experiments of two factors and three levels with different irrigation depths of D10 (10 cm), D20 (20 cm), and D30 (30 cm), laying radius of R30 (30 cm), R40 (40 cm), and R50 (50 cm). The effects of different micro-hole infiltration irrigation circular layout methods on soil water distribution, yield, and water use efficiency of Lingwu long jujube were analyzed. With the increasing depth of microporous infiltration irrigation, the maximum distribution range of soil moisture content and the wet front moved downward, and the maximum distribution range of soil moisture content in the vertical direction reached 10~55 cm. With increasing radius of the microporous infiltration irrigation, the maximum distribution range of soil moisture content and the wet front moved outward, and the value of soil moisture content in the maximum wet area of each treatment was above 20%. The jujube hanging length, flowering number per hanging, fruit setting per hanging, fruit setting rate, single fruit weight, fruit number per plant, yield and water use efficiency of the jujube tree under R40D20 treatment were the largest at 31.24 cm, 66 flowers, 39, 59.70%, 19.20 g, 444, 7 666.82 kg·hm-2, 2.83 kg·m-3, respectively, and all were significantly different from the other treatments (p<0.05). Therefore, the micro-porous infiltration irrigation with a burial depth of 20 cm and a laying radius of 40 cm were the best laying method for Ziziphus jujuba Mill.cv.Lingwu long jujube. |
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