五家渠地区气候变化及其对棉花产量的影响

Regional Climate Change in Wujiaqu and Its Impact on Cotton Production

根据五家渠地区102团气象站1956—2007年的气温和降水资料,利用线性趋势函数及t检验法分析了该地区52a的气候变化,并对20世纪80年代以来的气候资源与棉花产量进行相关性分析。结果表明,五家渠地区年平均气温和年降水量均呈上升趋势,但都略小于新疆的上升趋势;从季节来看,秋季增温最多,其次是春、冬季,夏季最小;各季降水量均有增加趋势,且增率差距不大;气候资源变化表现为由次宜棉区向宜棉区转变,棉花单产逐年增加显著,并与该地区≥10℃的积温和无霜冻期气候指标值显著相关。

According to the temperature and precipitation data of the meteorological station in Wujiaqu region 102 Mission from 1956 to 2007, the climate change was analyzed by using linear trend function and t-test methods. And correlation analysis was carried on between the climate resources and cotton output. The results indicate that the average temperature and precipitation showed an increase trend in Wujiaqu region, but the increasing trend slightly smaller than it in Xinjiang. The warming trend is most obvious in autumn, less in spring and winter, least in summer. Precipitation in each season shows an increasing trend and there is no difference between the increasing trends. Cotton yield increased significantly year after year, and is significantly correlated with the accumulated temperature ≥10℃） and frost-free period.