The climate of Hangu Farm

It belongs to the warm temperate semi-humid continental monsoon climate type. The continental monsoon climate is significant, with four distinct seasons, abundant light and heat resources, and relatively poor water resources. At the same time, there are also meteorological disasters such as droughts and floods, strong winds, hail, continuous rain, and low temperature and cold damage. . The annual average sunshine is 2820.2 hours, the sunshine percentage is 64%, and the total annual solar radiation is 127.8 kcal/cm2. The annual average temperature is 10.9℃. The cumulative average annual precipitation is 621.7 mm, of which the summer (June-August) precipitation is 486.7 mm, accounting for 78% of the annual precipitation. The average first frost day occurs on October 17, the average last frost day occurs on April 16, and the frost-free period is 183 days. 1. Light energy: The annual sunshine hours are 2820.2 hours, and the sunshine percentage is 64%. The sunshine hours above 0℃ are 2108.0 hours, accounting for 75% of the total annual sunshine hours. The sunshine hours above 10℃ are 1628.4 hours, accounting for the total annual sunshine hours. 58% of the sunshine hours. The maximum sunshine hours in May are 304.3 hours and the sunshine percentage is 69%. The sunshine hours in December are at least 193.1 hours and the sunshine percentage is 73%. The sunshine hours in the crop growing season from April to October are 1784.3 hours. , accounting for 63% of the total sunshine hours. The total sunshine hours from June to September in the autumn crop growth season are 1000.8 hours, accounting for 35% of the total sunshine hours throughout the year. 2. Heat: The average temperature is 10.9℃, the average temperature in the hottest July is 25.5℃, the average temperature in the coldest January is -5.8℃, the annual temperature range is 31.3℃, and the annual extreme maximum temperature is 39.3℃, which occurred on July 16, 1972. , the annual extreme minimum temperature was -23.7, which occurred on December 29, 1978, and the annual extreme maximum temperature difference was 63.0℃. The average first frost day occurs on October 17, with the earliest being October 2 and the latest being November 3. The last frost day occurs on April 16, with the earliest being April 9 and the latest being April 26. The average frost-free period is 183 days, the longest frost-free period is 206 days, and the shortest is 161 days. The first frost day with 80% guarantee rate is October 8, the last frost day is April 24, and the frost-free period is 168 days. The average daily average temperature stably passes 0℃ starting from March 6th and ending on November 28th. The interval is 268 days. The average accumulated temperature of 0℃ activity is 4410.5℃. The initial period when the daily average temperature stably passed 10℃ was April 8 and ended on October 26. The interval was 202 days, and the active accumulated temperature was 3995℃. The daily average temperature stably passed 15℃ initially on April 28 and ended on October 5, with an interval of 161 days, and the active accumulated temperature was 3399℃. The initial temperature that stably passed 20℃ was on May 21 and ended on September 16, with an interval of 119 days, and the active accumulated temperature was 2468.8℃. 3. Precipitation: The cumulative annual average precipitation in the region is 621.7 mm, with 101 precipitation days, and is highly concentrated from June to August, with an average of 468 mm, accounting for 75.3% of the annual precipitation, while the average rainfall from July to August is 379.9 mm, accounting for 81.2% of the summer precipitation. There are nine droughts in spring, with the average precipitation being 64.6 mm, accounting for only 10.4% of the annual precipitation. 4. Meteorological disasters: Spring drought years account for 68.7% (one precipitation is less than 20 mm), summer years account for 41% (one precipitation is less than 30 mm from late June to early July), spring and summer drought years account for 12%, and autumn years account for 12%. 37.5% (30% less than normal precipitation). Summer flood years account for 41% (20% more rainfall than normal years). Floods can also occur when a rainfall exceeds 100 mm. The frequency of local floods accounts for 52.9%. Hail disasters in the Hangu management area occur as early as May 5 and as late as September 17, mostly in the afternoon to night, often accompanied by heavy rain and strong winds. The frequency of hail-free years accounts for 53%, and the frequency of hail falling once a year accounts for 53%. 29%. The frequency of hail falling twice a year accounts for 18%. There are an average of 36.8 strong winds (short-term winds above level 8) per year, with the highest frequency in spring accounting for 44% of the year, followed by winter at 31% of the year.