论文部分内容阅读
广东省梅州市属于亚热带季风气候区,是南亚热带和中亚热带气候区的过渡地带,年平均温度为20.7~21.4℃,无霜期300天以上,1月平均气温为0.9~13℃。据统计,梅州市冻害天气的出现具有一定的周期性和规律性,近10年出现的冻害分别为1999年冬,2004年冬、2008年初,每隔5
Meizhou City, Guangdong Province belongs to the subtropical monsoon climate zone, which is the transitional zone between the subtropical and subtropical climatic zones. The annual average temperature is 20.7-21.4 ℃, the frost-free period is more than 300 days, and the average temperature in January is 0.9-13 ℃. According to statistics, the appearance of frost-damaging weather in Meizhou City has certain periodicity and regularity. The frost damage occurred in the past 10 years are 1999 winter, winter 2004 and early 2008, with intervals of 5