Characteristics of Farming System in South China

According to the map analysis, (1) China's north-south span latitude is large, and with the influence of winter wind, the winter temperature distribution in China shows the characteristics of large temperature difference between north and south; (2) Looking at the map, B is the northern region, A is the southern region, C is the northwest region, and D is the Qinghai-Tibet region; The dividing line between the southern region and the northern region is Qinling-Huaihe River; (3) Cultural differences between the south and the north of China: the heat in the south is sufficient and the heat in the north is insufficient, so the farming system in the south of China is two or three crops a year, while in the north of China it is one crop a year or three crops every two years; There are many rivers and lakes in the south, the traditional mode of transportation is water transportation, and the northern plain is vast, mainly land transportation; There is a lot of precipitation in the south, but it is not cold in winter. Traditional houses are characterized by large roof slope, high walls, less precipitation in the north, cold winter, low roof slope and thick walls. (4) Cotton is the main cash crop in Northwest China, with exposed groundwater and developed agricultural oasis industry. (5) The Qinghai-Tibet region is known as the "roof of the world", so it is rich in solar energy resources, and the most likely place to see it is called the "boat on the plateau" (2) Qinling Mountains; Huaihe River; (3) Farming systems in southern villages and northern villages ② ① Traditional modes of transportation ④ Characteristics of traditional houses ⑤ (4) Cotton; Oasis; (5) solar energy; Yak.