Compared with Guizhou, Beijing's climate.

The weather in Beijing is characterized by four distinct seasons. Dry in spring, hot and rainy in summer, refreshing in autumn and cold and dry in winter; The wind direction has obvious seasonal variation, with northwest wind prevailing in winter and southeast wind prevailing in summer.

Climate investigation

Beijing has a warm temperate semi-humid and semi-arid monsoon climate. The annual average temperature is 1 1 ~ 13℃ in the plain, 9 ~ 1 1℃ in the mountainous area below 800 meters above sea level and 3 ~ 5℃ in the alpine mountainous area. The annual extreme maximum temperature is generally between 35-40℃.

Guizhou is located in the subtropical west of China, on the slope of Yunnan-Guizhou Plateau, with a subtropical monsoon climate. The eastern half is located in the southeast monsoon region, which is humid all year round. The western half is in the transition zone from the southeast monsoon without obvious dry and wet seasons to the southwest monsoon with obvious dry and wet seasons. Because it is located at low latitude and high altitude, it is close to the ocean. The central uplift in the territory gradually decreases in the east, south and north directions, and is constant between the Sichuan Basin and the hills of Guangxi. Mountains crisscross and rivers crisscross, which makes the terrain very complicated, thus forming the complexity and diversity of climate. Although the climate in most areas is mild and humid, the vertical change of climate in mountainous areas and valleys is particularly obvious. In the winter half year, due to the blocking of Qinba Mountain in the north, the cold air in the south mostly intrudes from the north, bypassing the two lake basins, and often forms a static front in the central and western regions. The Weining and Panxian areas in the west are often in front of the front, so it is sunny in winter, and the central and eastern parts of the province are just behind the front, so it is rainy in winter. Summer is controlled by subtropical high, and it is often sunny and dry in the east, but there are frequent rainstorms in the west. The subtropical high jumps northward and the rain belt moves northward. At this time, drought and flood alternate in the province. ?

Guizhou is rich in climate resources, and its general climate features are: distinct four seasons, mild spring and mild wind, no severe cold in winter, no intense heat in summer, abundant rainfall, rainy and hot in the same season, cloudy and less sunshine, high humidity, rainy and rainy, obvious monsoon climate, long frost-free period, great vertical difference and obvious three-dimensional climate. In terms of light energy resources, the cloud cover in most parts of the province is about 80%, the sunshine percentage is between 25% and 35%, and the sunshine hours are 1, 200 ~ 1, 600 hours, which makes the total solar radiation in the whole year only 3349 ~ 3767 Joules/m2, which is a low-value area in China. However, from April to September, more than 70% of the sunshine and solar radiation were concentrated in the whole year. So it can basically meet the demand of crops for light energy. In terms of heat resources, except for the cold areas in northwest China, the average annual odor in most areas is 14.0~ 18.0 degrees Celsius, the average temperature in the coldest month is 10 degrees Celsius, and the average temperature in July in the hottest month is above 22 degrees Celsius, greater than or equal to10 degrees Celsius, and the accumulated temperature. In terms of water resources, the annual precipitation in most areas is between1100 ~1300mm, and more than 75% of the annual precipitation is concentrated from April to September, which can basically meet the needs of crop growth. ?

Due to the instability of monsoon (advance and retreat sooner or later, strong and weak), the climate in Guizhou is complex and the weather is changeable, so that meteorological disasters such as two droughts (spring drought and summer drought), two winters (spring cold and autumn wind) and hail occur frequently, which is extremely harmful to Guizhou's agricultural production.