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天然橡胶原生长在高温,高湿、静风的巴西亚马孙河的热带雨林中,形成了既怕低温又怕风的习性。目前世界天然橡胶的主要产区多集中在东南亚热带地区,这些地区的最低气温大都在15℃以上,对橡胶树无寒害。本世纪初(1904—1906年)由华侨把橡胶树引种到海南岛的琼海和那大地区起,至解放初期近五
The original growth of natural rubber in the high temperature, high humidity, quiet wind in the Amazon rainforest of Brazil, the formation of both fear of low temperature and fear of the habit of the wind. At present, the main producing areas of natural rubber in the world are mostly concentrated in the tropical regions of Southeast Asia. The minimum temperatures in these regions are mostly above 15 ℃, and are not harmful to rubber trees. At the beginning of this century (1904-1906), the overseas Chinese introduced the rubber tree to Qionghai and the large area in Hainan Island. Nearly five years after the liberation,