| 程平,李宏,李长城,张志刚,刘帮,孙明森.井式节水灌溉下干旱区灰枣树干液流动态及其对气象因子的响应[J].干旱地区农业研究,2017,35(5):263~270 |
| 井式节水灌溉下干旱区灰枣树干液流动态及其对气象因子的响应 |
| Stem sap flow dynamic of jujube and its response to meteorological factors in the arid area under pit irrigation |
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| DOI：10.7606/j.issn.1000-7601.2017.05.39 |
| 中文关键词: 井式灌溉 盛果期灰枣 液流量 气象因子 |
| 英文关键词:pit irrigation jujube in full fruit period sap flow meteorological factor |
| 基金项目:国家林业公益性行业专项项目“新疆特色林果提质增效关键技术研究与示范”(201304701-2) |
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| 中文摘要: |
| 在干旱区采用热扩散式液流仪（TDP）、HOBO小气候仪连续监测井式节水灌溉方式下盛果期枣树干液流及气象因子，探讨井式灌溉条件下盛果期枣树干液流变化对气象因子的响应。结果表明：枣树整个生育期树干液流总量为3 935 kg，夏季液流累积量为2 387 kg，约占整个生育期液流总量的61%，蒸腾耗水量夏季最为严重。影响各月枣树干液流的主导气象因子不同，而太阳辐射占各月比例较多。太阳辐射、水汽压亏缺值越大并不代表液流速率越大，液流速率的大小取决于时间、气象及枣树生理状态。 |
| 英文摘要: |
| Stem sap meter (TDP) and HOBO microclimate were used to continuously monitor the stem sap flow rate and meteorological factors of jujube in full fruit period under the condition of pit irrigation in the arid area. The results showed that the total amount of sap flow in the whole growth period of jujube was 3 935 kg, and the accumulation of sap flow in summer was 2 387 kg, which accounted for 61% of the whole growth period. The transpiration water consumption in summer was the most serious(severe). The main meteorological factors affecting the stem sap flow of each month were different, and the proportion of solar radiation accounted for more months. Higher solar radiation and value of water vapor pressure deficit don't indicate higher flow rate, the flow rate depends on the time, meteorological and jujube's physiological state. |
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