蓖麻原产于热带及亚热带地方,为多年生植物。现在温带地区已大量栽培,但是栽培在温带的蓖麻就已变成一年生植物了。栽培种为一年生。我国栽培的蓖麻原从印度传入,现在从东北到广东到处都栽培,其中以河北、山东、辽宁等省出产最多。苏联在十月革命胜利后蓖麻的栽培事业有了很大 Castor native to tropical and subtropical places, perennials. Now temperate areas have been cultivated, but cultivated in temperate castor has become an annual plant. Cultivation for the annual. China’s cultivated Ricin imported from India, now from northeast to Guangdong are cultivated everywhere, including Hebei, Shandong, Liaoning and other provinces produce the most. After the victory of the October Revolution in the Soviet Union, the cultivation of castor has been greatly enhanced