By the 1970's, the land area devoted to rubber cultivation had jumped from 40,000 mu to 3.6 million, and Hainan had become China's largest rubber growing region.
總計從一九五○年代到七○年代，橡樹面積由四萬畝不到增加到三百六十多萬畝，海南島也成為中國最大橡膠產地。