| 关于农业旱涝指标的研究 |
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| 引用本文： | 肖嗣荣,郭康.关于农业旱涝指标的研究[J].地理研究,1985,4(2):56-64. |
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| 作者姓名： | 肖嗣荣 郭康 |
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| 作者单位： | 河北省地理研究所 |
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| 摘 要： | 本文试图从农田水分平衡观点出发,根据作物生长季节的需水量与同期可供水分的关系,建立了一个农业气象学的旱涝指标。
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| 收稿时间： | 1983-12-12 |
| 修稿时间： | 1984-11-05 |
RESEARCHES ON THE INDEXES OF AGRICULTURAL DROUGHT AND FLOOD |
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| Xiao Sirong,Guo Kang.RESEARCHES ON THE INDEXES OF AGRICULTURAL DROUGHT AND FLOOD[J].Geographical Research,1985,4(2):56-64. |
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| Authors: | Xiao Sirong Guo Kang |
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| Institution: | Institute of Geography, Hebei Academy |
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| Abstract: | The authors have established a formula of drought and flood in agromet-eorolgy from the viewpoint of water-balance in farmland, and analysed the crops require-offering relationship and crops requirement of water (N), at the same period, that is. K={W+R(1-σ-S)+Q}/NMany parameters of effect have been considered, such as precipitation (R), moistures of soil in the depth of a metre (W), surface runoff (a), evaporation of under-ground water and moisture in the deep soil (Q), permeation (S) at the supply of water as the parameters of effect.As the parameters of effect are different in distinctive region and reasons, the parameter K has different formula of simplifying.The authors have established the table of drought-water-logging by experience (Table 5,) here K is divided into five grades i. e. water-logging, sub-waterlogging, normal, subdrought and drought.Finally, both K anb the real case are compared, it shows that they are approximate. |
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