The number of rice crops per year in the south is an issue closely related to both agriculture and geography, involving the environmental conditions in which crops are grown, climatic characteristics, and the traditions and techniques of agricultural production. In southern China, due to its specific climate and soil conditions, rice cultivation has a unique growth cycle and maturation.
First of all, we need to be clear about what "cooked" is. In agriculture, ripening refers to the number of harvests of a crop in a growing season. Generally speaking, if a crop can be harvested more than once in a growing season, then the region has a multicropping system, which means that the agricultural productivity of the region is high.
The maturation of rice in the south is affected by climatic conditions. The climate in the southern region is warm and humid, especially in the Yangtze River basin and the Pearl River basin, with four distinct seasons, abundant heat and abundant precipitation, which provides unique conditions for the growth of rice. In the south, rice cultivation mostly adopts a system of double or triple cropping a year.
Double cropping means that a crop can be harvested twice in a growing season. In the south, due to the favorable climatic conditions, rice cultivation in many places is done twice a year. For example, in Shanghai, Jiangsu and Zhejiang in the Yangtze River basin, and in Guangdong and Guangxi in the Pearl River basin, rice is harvested twice a year.
Triple cropping, on the other hand, means that a crop can be harvested three times in a growing season. In the southern region, some places with better thermal conditions, such as parts of Hainan Island and Xishuangbanna in Yunnan, can achieve three crops a year.
In summary, the ripening of rice in southern China varies according to the climatic conditions of different regions. In places with better climatic conditions, two or three crops a year can be achieved. The implementation of this multiple cropping system not only improves the utilization rate of land, but also increases grain output, which is of great significance for ensuring China's food security.