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海南島是祖国的一个大岛,面积33,556平方公里,具有热带的气候,平均气温在25℃左右,年雨量1,000—2,000毫米以上。土壤肥沃,自然环境适合于热带植物生長。解放以来,政府对于海南島的开發做了不少工作。在植物方面,一方面对植物资源作了全面的調查,另一方面政府从国外引种了許多热带作物,来充实祖国的植物資源;药用植物的調查和引种栽培,亦日益被人重視。古柯是一种重要的麻醉药物。它的叶中含有一种生物鹼,名为可卡因(Cocaine),也即是古柯鹼,在医药上用为局部麻醉剂。古柯屬(Frythroxylum P. Br.)植物世界上約有90种,分佈在热帶地方,以热带美洲为
Hainan Island is a large island of the motherland with an area of 33,556 square kilometers. It has a tropical climate with an average temperature of around 25°C and an annual rainfall of 1,000-2,000 mm. The soil is fertile and the natural environment is suitable for the growth of tropical plants. Since the liberation, the government has done a lot of work on the development of Hainan Island. In terms of plants, on the one hand, a comprehensive survey of plant resources was conducted. On the other hand, the government introduced many tropical crops from abroad to enrich the plant resources of the motherland. The investigation and introduction and cultivation of medicinal plants has also received increasing attention. Coca is an important anesthetic drug. Its leaves contain an alkaloid called cocaine, also known as cocaine, which is used as a local anesthetic in medicine. There are about 90 species of Frythroxylum P. Br. in the tropical world, with Tropical America as the