云南勐海影响甘蔗产量与糖分的气候因子变化趋势的研究

The Varied Trend of Weather Factors which Influenced Yield and Sugar Content of Sugarcane in Menghai of Yunnan Province

对影响云南勐海甘蔗产量和糖分的气候因子近45年来的趋势性、阶段性和周期性的分析表明:影响甘蔗产量的气候因子中,3～10月的积温增加趋势显著;3～10月的积温和降水量有显著的阶段性;3～10月的积温、降水量、日照时数都有显著的振荡周期。影响甘蔗糖分的气候因子中,10～11月的平均最低气温增加趋势比较显著,有显著的周期性和阶段性;11月至次年2月的降水量有3～4年的振荡周期,趋势性和阶段性不显著。

The trend, phase and periodic of weather factors which influenced sugarcane in Yunnan in 45 years were analyzed. The result showed that the effect of weather factors on sugarcane varied monthly. The accumulated temperature which influenced yield of sugarcane would increase significantly from March to October, while the accumulated temperature, rainfall and sunshine hours changed periodically the same time. The averaged lowest temperature which influenced sugar content increase significantly from October to November, rainfall from November to February of next year would change periodically for 3 to 4 years.