湖南省油菜生育期間氣候資源時空變化規(guī)律分析
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湖南省氣象局短平快項目“湖南省油菜氣象災害時空規(guī)律和評估研究”(200901)


Spatial Temporal Variation of Climate Resources during Rape Growing in Hunan
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    摘要:

    利用湖南省1962—2010年96個氣象站逐日氣象資料及5個農(nóng)業(yè)氣象試驗站1991—2010年油菜生育期觀測資料,應用氣候統(tǒng)計分析方法,分析了油菜主要生育期氣候資源空間分布規(guī)律和年際變化特征。結果表明:湖南省油菜全生育期時長無明顯地域性差異,生育期間大于等于0 ℃積溫有明顯的地域性差異。影響油菜生育期間的主要氣象因子為氣溫和日照時數(shù),不同生育期主要氣象因子有所差異。各發(fā)育期氣候資源空間分布不均,年際變化有差異。冬前苗期和角果發(fā)育期的積溫呈增加趨勢,越冬期的小于等于0 ℃和小于等于-3 ℃日數(shù)呈減少趨勢,蕾薹期日照時數(shù)呈減少趨勢,開花期和角果發(fā)育期日照時數(shù)呈增加趨勢。總體而言,湖南油菜生育期間的氣候資源及其變化趨勢有利于油菜生長。

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    By means of the statistical method, using the data of air temperature, sunshine duration, and precipitation from 1962 to 2010 of 96 weather stations and the data of rape growth from 1991 to 2010 of 5 agrometeorological stations in Hunan Province, the spatial distributions and inter annual variations of agrometeorological elements closely correlated to different growth stages of rape are analyzed.Results show that the whole growth period of rape has no significant differences between regions, but the accumulated temperature of ≥0 ℃ during the rape growth period has obvious regional difference.The main influencing meteorological factors during the rape growth period are air temperature and sunshine duration, which vary at different growth stages.The climate resources are unevenly distributed spatially, and the inter annual variation of climate resources differs at different growth stages.The accumulated temperatures before wintering and pod development periods trend to increase; the numbers of days of 〖WTBX〗T 〖WTBZ〗≤0 ℃ or 〖WTBX〗T 〖WTBZ〗≤-3 ℃in the wintering period trend to decrease; the sunshine duration during the stem elongation period trends to decrease; the sunshine duration during the flowering and pod development periods show a trend of increase. Overall, the climatic resources and variation trends during the rapes growth period are advantageous to rape planting.

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方麗,李涵茂,戴鵬飛,戴平,黃晚華,賀紅志.湖南省油菜生育期間氣候資源時空變化規(guī)律分析[J].氣象科技,2014,42(4):725~730

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  • 收稿日期:2013-05-25
  • 定稿日期:2013-12-06
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  • 在線發(fā)布日期: 2014-08-26
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