珠江三角洲是糖蔗生产地区。本地区糖蔗分布在三种类型的土地上,第一种是基水地(小块的农作土地与鱼塘连接的地区),土壤多属粘质壤土或砂质壤土,颇为疏松,排水良好,大部份是多年连种甘蔗的。第二种是围田,原是冲积成的坦地,周围筑堤防洪而成,土壤是重粘土,排水不良,灌溉方便,甘蔗与水稻轮种。第三类是高旱的岗地,不是本文研 Pearl River Delta is the sugar cane production areas. The sugar cane in the region are distributed on three types of land. The first type is base water (a small area of ​​agricultural land connected with a fish pond), and the soil is mostly loose clay or sandy loam. Well drained, most of them are planted with sugar cane for many years. The second is the enclave, which was originally an alluvial flat, surrounded by embankment flood control, the soil is heavy clay, poor drainage, irrigation convenience, sugarcane and rice rotation. The third category is high drought posts, not this research