›› 2017, Vol. 29 ›› Issue (11): 1775-1782.DOI: 10.3969/j.issn.1004-1524.2017.11.02

• Crop Science • Previous Articles     Next Articles

Assessment on climatic potential productivity of rice in Guizhou Province

ZHANG Bo1, 2, GU Xiaoping1, *, GU Shuhong1   

  1. 1. Guizhou Institute of Mountainous Environment and Climate, Guiyang 550002, China;
    2. Guizhou Key Laboratory of Mountainous Climate and Resources, Guiyang 550002, China
  • Received:2017-04-18 Online:2017-11-20 Published:2017-12-05

Abstract: Based on the meteorological data of 81 meteorological stations in Guizhou Province during 1961-2015, the photosynthetic potential productivity, photo-thermal potential productivity, climatic potential productivity and climatic resources utilization of rice were evaluated with successive correction analysis. It was shown that the photosynthetic potential productivity, photo-thermal potential productivity, climatic potential productivity of rice in Guizhou Province exhibited decrease trend, with decrease rates of 484.46, 206.78, 357.38 kg·hm-2·10 a-1, respectively. The spatial distribution of the photosynthetic potential productivity was high in eastern and western region, while low in the central and northern region. While, the spatial distribution of photo-thermal potential productivity and climatic potential productivity showed a decrease trend from southeast to northwest. The temporal variation of rice climate resource utilization showed an increase trend at the rate of 0.017%·a-1, and the average annual climate utilization rate was 9.06%.

Key words: rice, climatic potential productivity, climatic resources utilization, change trend, Guizhou Province

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