[目的]研究长沙地区早稻播种气候条件及农业气象服务.[方法]利用长沙市1910 ～2011年气候资料,采用统计分析方法,对长沙地区早稻播种气候条件进行了分析,并根据早稻播种农业气象指标,确定该地区早稻播种期,揭示早稻播种育秧与气候条件的关系.[结果]长沙市日平均气温稳定通过10℃初日出现时段以3月26 ～31日最多,其次为3月16～20日,再次为3月21～ 25日；该地区早稻播种期可分为3批进行:薄膜覆盖育秧和旱育秧可在春分边播种；水育秧大面积育秧可在春分后抢住冷尾暖头下泥；油菜田、草子留种田可在4月初抢住冷尾暖头播种.[结论]该研究为长沙地区早稻播种提供科学理论依据.%[Objective] To study the climate conditions and agriculture meteorological services of early rice planting in Changsha area. [Method] Using the climatological data from 1910 to 2011 in Changsha City and adopting the method of statistical analysis, the climate conditions of early rice planting in Changsha area were analyzed; the planting period of early rice was determined by the agro-meteorological indicators of early rice planting, the relationship between early rice planting and climatic conditions has been revealed. [Result] The period of the first date for the daily temperature to steadily pass 10 ℃ was the most on March 26 to 31, followed by March 16 to 20 and March 21 to 25. The early rice planting period can be divided into three batches: the film-covered seedling and dry seedbed can be planted around vernal equinox; large-area water sprout should be cultivated after vernal equinox before the temperature gets warming; the rape fields and grass stay in farming can be planted in April when the weather is neither too hot nor too cold. [ Conclusion ] The study provides scientific basis for the sowing of eary rice in Changsha.
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