我国热带、亚热带地区面积约50万平方公里,栽培普遍,面积较大的除水稻、玉米、豆类、棉、麻、烟草等与寒温带共有的农作物外,还有许多传统的热带亚热带经济作物。其中甘蔗、茶、椰子、胡椒、荔枝、柑桔、香蕉、芒果、菠萝蜜等都是原产南亚、东南亚或华南,栽培普遍,面积较大,引种历史悠久。三叶橡胶、剑麻、腰果、可可、油梨、 There are many traditional tropical and subtropical cash crops in China’s tropical and subtropical regions, covering an area of ​​about 500,000 square kilometers and common and large-scale cultivation, with the common crops of rice, corn, beans, cotton, hemp and tobacco and the cold temperate zone . Among them, sugarcane, tea, coconut, pepper, lychee, orange, banana, mango and jackfruit are all native to South Asia, Southeast Asia or South China. They are widely cultivated and large in area with a long history of introduction. Clover, sisal, cashew nuts, cocoa, avocado,