【摘 要】
：
利用吉林省九台市气象站1977—2009年水稻和玉米生育期降水量观测资料,采用线性趋势法、累计距平法、频率分析法、方差分析法对九台市作物生育期降水量特征进行了分析,研究其
【机 构】
：
吉林省电力勘测设计院,长春工程学院,
论文部分内容阅读
利用吉林省九台市气象站1977—2009年水稻和玉米生育期降水量观测资料,采用线性趋势法、累计距平法、频率分析法、方差分析法对九台市作物生育期降水量特征进行了分析,研究其降雨的随机性、趋势性和周期性,揭示了降水量丰枯交替变化特点以及未来的发展趋势。研究表明,作物生育期降水量呈减小的趋势且存在着丰枯周期变化,降水量主要存在2a、11a周期。
Using the data of precipitation during the growth period of rice and maize from 1977 to 2009 in Jiutai Meteorological Station, Jilin Province, the characteristics of precipitation during the growing season of Jiutai City were analyzed by linear trend method, cumulative distance method, frequency analysis method and analysis of variance Analyzed and researched the randomness, trend and periodicity of rainfall, revealed the characteristics of the alternation of rainfall and heavy rainfall and the future development trend. The results show that the precipitation in the crop growth period shows a decreasing trend and there is a cycle of abundance and dryness, and the precipitation mainly exists in the period of 2a and 11a.
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