| A study on water suitability of table grape in Tianshui |
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| DOI：10.7606/j.issn.1000-7601.2013.01.21 |
| Key Words: Tianshui table grape water suitability growing periods |
| Author Name | Affiliation | | YAO Xiaoying | Lanzhou Institute of Arid Meteorology, China Meteorological Administration/
Key Open Laboratory of Arid Climate Change and
Reducing Disaster of CMA/Key Laboratory of Arid Climatic Changing and Reducing D
isaster of Gansu Province, Lanzhou 730020, China
Tianshui Meteorological Bureau, Tianshui, Gansu 741000, China | | LI Xiaowei | Institute of Environmental Science and Engineering, Zhongkai University of Agr
iculture and Technology, Guangzhou 510550, China | | WANG Yuxi | Guangdong University of Foreign Studies, Guangzhou 510550, China | | WANG Hongbin | Tianshui Meteorological Bureau, Tianshui, Gansu 741000, China |
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| Abstract: |
| Based on the observation data of phenology of table grape at Tianshui Agro-meteorological Experiment Station from 2004 to 2009 and the meteorological data at Maiji National Base Meteorological Station from 1971 to 2009, the water requirement of table grape during various growing periods had been calculated with the FAO Penman-Monteith formula (1998 edition) and crop coefficients, and the model of water suitability degree of table grape had been set up. The results showed that the water supply in Tianshui was comparatively advantageous to table grape and the mean water suitability degree of whole growing season was above 0.70. The water suitability degree of whole growth season decreased with the times in recent years. Although the mean water suitability degree of whole growing season was relatively good, it was uneven among different growing periods. The precipitation was more than the amount of water requirement during the late growing period, but there was a remarkable water deficiency and the water suitability degree was relatively low during vigorous growing period. It was suggested that, in order to improve the industry of table grape sustainably, irrigation facilities be developed preferentially in the mountain areas in Tianshui. |
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