Geographical environment of Fanchang county

Fanchang county is located in the southern edge of the north subtropical warm monsoon climate zone. The climate is mild throughout the year, with four distinct seasons, long winter and summer, short spring and autumn, moderate rainfall, long frost-free period, high humidity and abundant sunshine. Due to the influence of monsoon, precipitation changes greatly during the year, and the seasonal distribution is uneven, resulting in local droughts and floods.

The annual average temperature in the county is 65438 05.3℃. 65438+ 10 is the coldest month, with an average temperature of 3.0℃, and the extreme low temperature is generally around -7.4℃, and the time limit is about 65438+February to early February. 1969 appeared in February-14.3℃. It is the hottest in July, with an average temperature of 28.8℃ and an extreme high temperature of about 37.5℃. The time limit is from mid-July to early August. 1On August 7th, 966, the temperature reached 4 1.2℃.

Due to the influence of terrain elevation and Yangtze River water system, the temperature in the county rises from north to south, and the temperature difference between north and south is about 0.5℃.

The annual average frost-free period is 23 1 day. The frost period starts from 134 days, and generally starts from the first ten days of 165438+ to the middle of March of the following year.

The annual average ground temperature is 18.5℃. The lowest ground temperature was 3.6℃ in June+10/October, 5438, and the extreme lowest temperature was -2 1.3℃ on February 6, 0969. The ground temperature is as high as 33.5 ~ 38.8℃ from July to August, and the extreme high temperature is 68.5℃ on August 1979.