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Why can farmers grow two rice crops each year in most of Guangdong?
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Guangdong
Bridge between Hong Kong and Shenzhen, Guangdong province, on the Chinese mainland.
Farmers in Guangdong are able to grow two rice crops each year primarily because of the province's favorable climate. Much of the region is situated south of the Tropic of Cancer, resulting in tropical and subtropical conditions where true winter does not occur.1
Because frost is rare outside of higher elevations, the growing season is sufficiently long to support multiple harvests. Additionally, the province benefits from high average January temperatures, which remain significantly warmer than those in more northern regions of China. This climate, combined with intensive agricultural practices and advancements in irrigation and flood control, allows for the repeated use of cultivated land.12