| Cite this article: | 郭恩亮,王永芳,王蕊,等.吉林省1961-2020年生长季玉米旱涝时空特征研究[J].灌溉排水学报,0,():-. |
| GUO Enliang,WANG Yongfang,WANG Rui,et al.吉林省1961-2020年生长季玉米旱涝时空特征研究[J].灌溉排水学报,0,():-. |
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| Spatial and Temporal Characteristics of Drought and Waterlogging for Maize in Jilin Province During Thethe Growing Season of 1961-2020 |
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GUO Enliang1, WANG Yongfang1, WANG Rui2, Aruna1, ZHANG Yaodong1
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1.College of Geographical Science,Inner Mongolia Normal University,Hohhot,Inner Mongolia;2.School of Chemical Environmental Engineering,Liaoning University of Technology,Jinzhou
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| Abstract: |
| Abstract: 【Objective】Identifying the spatial and temporal evolution characteristics of droughts and waterloggings in different fertility stages of maize in Jilin Province, in order to formulate targeted agricultural disaster prevention and mitigation countermeasures.【Method】 In this paper, the daily meteorological data of 27 stations from 1961 to 2020 were used to calculated the Modified Crop Water Deficit Index (mCWDI) on the basis of daily crop coefficient (Kc) which were estimated by using the piecewise function. Then, the methods such as the climatic variation trend and center of gravity transfer method were applied to analyze the characteristics of drought and waterlogging for maize during the growing season in Jilin province. 【Result】The results showed that the frequency of maize drought showed a decreasing trend from northwest to southeastern region. The frequency of drought from the early stage to the development stage of maize showed a decreasing trend, while the drought enhanced in the middle and late stages. The frequency spatial distribution of maize waterlogging presents that the southeastern region is higher in the early and late growth period, while that is lower in the maize development period. At the same time, the frequency of maize waterlogging in the central part of Jilin Province has increased faster than that in other areas. 【Conclusion】The research results can provide a scientific basis for the effective formulation of agricultural drought and waterlogging disaster prevention countermeasures in Jilin Province. |
| Key words: Modified crop water deficit index; Drought and waterlogging; Maize; Jilin province |
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