信宜市早稻气象条件分析

利用标准化距平、线性倾向率、滑动平均和对比分析等方法,对信宜市1962~2006年间气象观测站的月平均气温、月总降水量、月日照时数以及早稻单产资料进行分析。结果表明,气温的上升对早稻单产的增加起到了一定的促进作用;早稻成熟期降水的波动趋势与早稻单产的波动趋势比较类似,目前,降水和水稻单产处于下降的趋势;早稻生长季均出现暖干、日照减少趋势,导致早稻出现增产缓慢或小幅度的减产趋势。

Meteorological Condition Analysis of Early Rice in Xinyi City

By using normalized anomaly,linearity inclination rate,moving average and comparative analysis,the monthly mean temperature,monthly total precipitation,monthly sunshine hours and early rice unit yield data at meteorological observing station from 1962 to 2006 in Xinyi City were analyzed.Result showed that the rise of temperature had certain promotion effect on the increase of early rice unit yield.The fluctuation tendency of precipitation at mature stage of early rice was similar to the unit yield of early rice.At present,precipitation and rice unit yield showed downward trend.The warm dry and sunlight declined during the growth stage of early rice,which caused the reduction of yield increase.