Geographical environment of Kaifu District

Kaifu District is located in the north corner of Changsha, which is located at 2813' north latitude and112 57' east longitude. Next to the east bank of the lower reaches of Xiangjiang River, it is located at the southeast end of the intersection of Liuyang River and Xiangjiang River. It is connected to Changsha County and Furong District in the east, Yuelu District in the west, Wangcheng District in the north and Tianxin District in the south. The terrain gradually inclines from southeast to northwest, which is suitable for dustpan-shaped mouth in Changsha city. Total land area 188 square kilometers, including 65 square kilometers in urban area and 3.307 thousand hectares of cultivated land. Kaifu District belongs to subtropical monsoon humid climate.

The climate is characterized by mild climate, abundant precipitation, simultaneous rain and heat, and distinct four seasons. The annual average temperature in Kaifu District is 17.2℃, the annual accumulated temperature is 5457℃, and the annual average precipitation is1358.6 ~1552.5mm. The summer and winter in Kaifu District are long, and the spring and autumn are short, and the summer is about118-/. The temperature changes greatly in spring, with more rain in early summer, long high temperature in summer and autumn and less cold in winter.

From late March to mid-May, cold and warm air crossed each other, forming continuous rainy and low temperature weather.

Since the end of May, the temperature has obviously increased. In summer, the average daily temperature is above 30℃ for 85 days, and in hot days above 35℃, the average annual temperature is about 30 days, and it is very hot and rainy in summer.

After the end of September, it is warmer during the day and cooler at night, with less precipitation and more low clouds.

1 65438+1From late October to mid-March of the following year, the severe cold period in Kaifu District is very short, and1is the coldest in June, with a monthly average of 4.4℃-5. 1℃. Overwintering crops can safely overwinter and grow slowly.