| Research on water consumption rule of jujube tree under drop irrigation |
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| DOI：10.7606/j.issn.1000-7601.2014.06.006 |
| Key Words: jujube tree stem flow drop irrigation stem flow meter water consumption of jujube tree |
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| Abstract: |
| The experiment was conducted by researching stem flow to forecast water consumption, to provide scientific evidence for reasonable irrigation. The change of stem flow of jujube tree was measured by using the stem flow meter under drip irrigation. The results shown that: The maximum value of stem flow was appeared at 12∶00 PM, 15 May, 2010, the value was arrived 1 834.28 g·h-1; the maximum value of stem flow was appeared at 13∶00 PM, 26 June, the value was arrived 4 861.89 g·h-1; the maximum value of stem flow was appeared at 16∶00 PM, 10 August, the value was arrived 5 816.868 g·h-1; the minimal value of stem flow was total appeared in early morning from 4∶00 to 8∶00 AM. The average daily cumulative stem flow was relatively small
in May, also the average daily water comsuption was minimal in this month. When came to the July and August, the water consumption of jujube tree was obviously increased with rising temperature and end of rainy season. The average daily cumulative water comsumtion was maximal in August. Through the correlation analysis, the maximal temperature at the land surface and maximal air temperature have the large effect on stem flow of jujube tree. The conclusion of this experiment was that the soil moisture content was the major factor to influence the stem flow, also the other environmental factor was very important too. |
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