| 引用本文: | 张泽中,袁义杰,谷红梅,等.贵阳烟草生长期内旱涝急转特征分析[J].灌溉排水学报,2019,38(10):32-39. |
| ,et al.贵阳烟草生长期内旱涝急转特征分析[J].灌溉排水学报,2019,38(10):32-39. |
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| 摘要: |
| 【目的】探究贵阳市烟草生长期内旱涝急转特征，为防旱抗涝提供依据。【方法】利用贵阳市1951—2017年烟草生长期内逐日降水资料，以及贵州省灌溉试验中心站修文灌溉试验基地土壤墒情数据，通过定义连续无有效降水时间与涝期累计有效降水量，全面分析了贵阳市烟草生长期旱涝急转特征。【结果】在烟草生长期内，完全有可能发生2次以上旱涝急转，但强度较低。在烟草伸根期，不发生旱涝急转；在烟草旺长期，以低强度的旱涝急转为主，旱涝急转强度和频率都有增加趋势；在烟草成熟期，旱涝急转强度波动较大，旱涝急转强度和频率都有增加趋势。【结论】采用土壤墒情数据验证，基于连续无有效降水时间和涝期累计有效降水量能准确描述烟草生育期内旱涝急转演变规律。 |
| 关键词: 旱涝急转； 连续无有效降水时间； 涝期累计有效降水； 烟草生长期； 贵阳市 |
| DOI：10.13522/j.cnki.ggps.20190038 |
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| Analysis on the Characteristics of Drought-flood Abrupt Alternation during the Growing Period of Tobacco in Guiyang |
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ZHANG Zezhong, YUAN Yijie, GU Hongmei, SHEN Dongfang, SHANG Chongju, FAN Hua, LI Na
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1.North China University of Water Resources and Electric Power, Zhengzhou 450046, China；2.Guizhou Provincial Water Conservancy Research Institute ,Guiyang 550002,china
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| Abstract: |
| 【Objective】The purpose of this paper is to explore the characteristics of drought-flood abrupt alternation during the growth period of tobacco in Guiyang City.【Method】The daily precipitation data in the tobacco growth period from 1951 to 2017 in Guiyang City were used and the data of soil moisture content in the Xiuwen Irrigation Test Base of Guizhou Irrigation Test Center were adopted. By defining continuous days without available precipitation and the cumulative available precipitation during the flood period, the characteristics of drought-flood abrupt alternation in Guiyang were comprehensively analyzed.【Result】In the tobacco growth period, there were two or more times of drought-flood abrupt alternation with low intensity. During the period of tobacco root extension stage, there was no drought-flood abrupt alternation; In tobacco root extension period, there was no drought-flood abrupt alternation; during the flourishing growing period of tobacco, drought-flood abrupt alternation with low intensity prevails, and the intensity and frequency of drought-flood abrupt alternation increased; in tobacco mature period, the intensity of drought-flood abrupt alternation fluctuated greatly, and the intensity and frequency of drought-flood abrupt alternation increased. 【Conclusion】It can be verified by soil moisture content data that the law of drought-flood abrupt alternation in tobacco growth period can be accurately described based on continuous days without available precipitation and the cumulative available precipitation during the flood period. |
| Key words: drought-flood abrupt alternation; continuous days without available precipitations; the cumulative available precipitation during the flood period; tobacco growth period; Guiyang |
