Cite this article: | 张洋,马英杰.干旱绿洲区微喷灰枣全生长期蒸腾规律研究[J].灌溉排水学报,2022,():-. |
| Zhang Yang,Ma Yingjie.干旱绿洲区微喷灰枣全生长期蒸腾规律研究[J].灌溉排水学报,2022,():-. |
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Study on transpiration law micro spraying Ziziphus jujube ‘Huizao’in whole growth period in Arid Oasis |
Zhang Yang, Ma Yingjie
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(Xinjiang Agricultural University College of Water Conservancy and Civil Engineering
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Abstract: |
【Objective】To explore the variation law and water consumption characteristics of stem flow rate and meteorological factors in growth and dormancy period of jujube, so as to provide scientific basis for irrigation guidance of jujube.【Method】The stem flow rate of jujube under micro sprinkler irrigation was continuously monitored by stem flow meter throughout the year, and the changes of stem flow in each period were analyzed.【Result】①The results showed that solar radiation had the most significant effect on the stem flow rate, and the correlation coefficients were RD1 =0.924**, RD2 =0.939**, RD3 =0.943** and RD4 =0.915**; In dormancy period, air humidity was the main factor, and the correlation coefficients were RC1 =0.699**, RC2 =0.923**, RC3 =0.841**, RC4 =0.918** and RC5 =0.618**. ②During the growth period and dormancy period, the maximum duration of stem flow activity in daytime was 14 h and 9 h , and the variation of stem flow at night was significantly different. ③The peak range of stem flow rate at growth stage was from 12:00 to 15:30, while the peak range of stem flow rate at dormancy stage shifted with each dormancy stage, from 3:00 to 6:00 at C1 and C2 stages to 7:00 to 10:00 at C4 and C5 stages.④The water consumption in growth and dormancy stages was D3 > D4 > D2 > D1 and C1 > C5 > C3 > C2 > C4.【Conclusion】The annual water consumption of jujube stem flow is 3992.35 L. Water consumption of Jujube during dormancy is 774.34 L. It accounted for 19.39% of the total water consumption. The dormancy period of jujube is 182 days. The water consumption during dormancy period is of great significance to the growth and development of jujube. |
Key words: Stem flow; Growth period; Dormancy period; Water consumption |
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