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Acta Agron Sin ›› 2017, Vol. 43 ›› Issue (10): 1536-1547.doi: 10.3724/SP.J.1006.2017.01536

• TILLAGE & CULTIVATION·PHYSIOLOGY & BIOCHEMISTRY • Previous Articles     Next Articles

Temporal-spatial Variation of Crop Water Requirement and Frequency of Drought and Waterlogging Disasters during Maize Growth Stages in Low Hilly Plain Area of Hubei Province in Last 35 Years

HE Jun-Ou1,LING Xiao-Xia1,ZHANG Jian-She3,ZHANG Meng1,MA Di1,2,SUN Meng1,LIU Yong-Zhong1,ZHAN Ming1,*,ZHAO Ming2,*   

  1. 1 Key Laboratory of Crop Ecophysiology and Farming System in the Middle Reaches of the Yangtze River, Ministry of Agriculture / College of Plant Science and Technology, Huazhong Agricultural University, Wuhan 430070, China; 2 Institute of Crop Science, Chinese Academy of Agricultural Sciences / Key Laboratory of Crop Physiology and Ecology of Ministry of Agriculture, Beijing 100081, China; 3 Agricultural Technology Extension Station of Hubei Province, Wuhan 430070, China
  • Received:2016-10-24 Revised:2017-04-19 Online:2017-10-12 Published:2017-05-23
  • Contact: 展茗, E-mail: zhanming@mail.hzau.edu.cn; 赵明, E-mail: zhaomingcau@163.net E-mail:357783403@qq.com
  • Supported by:

    This study was supported by the National Key Research and Development Program of China (2016YFD0300308) and the Fundamental Research Funds for the Central Universities (2662015PY067).

Abstract:

Based on 35-year (1980?2014) meteorological data from eight benchmark long-term meteorological stations in low hilly plain area of Hubei province, we analyzed the temporal-spatial variation in water requirement and frequency of drought and waterlogging disasters in different growing stages of spring, summer and autumn maize in northern, central and southeastern regions of Hubei province. The water requirement at each growth stage of a certain maize season was similar among the three regions, but much different among maize seasons. The water requirement was obviously lower in autumn maize than in spring and summer maize, and similar between spring maize and summer maize. Maize water requirement in three production regions showed a significant downward trend in the process of year by year, especially in the area of central region, with a climate tendency rate of ?18.62 mm (10a)-1. The maize in three planting seasons could easily encounter waterlogging during the period from sowing to jointing in each production region, with a higher occurrence frequency of heavy waterlogging. Light drought mainly occurred during the period from jointing to maturity in maize in three planting seasons in northern and central Hubei, whereas heavy drought occurred during maize grain filling period. In the region of southeastern Hubei, waterlogging occurrence frequency was higher than that of drought from jointing to silking in spring and summer maize. However, drought easily came up during grain filling period of maize in three planting seasons, especially summer maize and autumn maize met more frequent drought than spring maize in this period. The interannual variation of drought and waterlogging at different maize growth stages of three planting seasons in each region was not significant. Considering the mitigation in drought and waterlogging impact, it is recommended to preferentially develop summer maize in northern region, and spring maize in central and southeastern regions of Hubei province. Meanwhile, our study suggests that in production we should prevent waterlogging before maize jointing and drought after maize jointing in low hilly plain area of Hubei province.

Key words: Maize, Water requirement, Crop water surplus deficit index, Drought and waterlogging frequency, Interannual variation tendency

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