石栗[Aleurites moluccana(Linn)willd(A.triloba Forst)]原产马来西亚檀香山群岛。在云南宾川海拔1400米干热河谷地区栽培已有14年了。它是大戟科一种常绿木本油料树、庭院观赏树,也是抗大气污染的良好树种。生长十分迅速,14年间在宾川繁殖了三代。但未被人们广泛认识、重视和推广。一、经济价值种子含油率高结实量大:干燥带壳种子含油率40%以上,可作工业用油和食用油。一棵成年石栗(7年生以后)平均年结实量1500～2000个,可取种子3000～4000粒,种子千粒重9150 Aleurites moluccana (Linn) willd (A.triloba Forst) native to Honolulu, Malaysia. It has been cultivated in the 1,400-meter dry-hot valley at Binchuan, Yunnan for 14 years. It is Euphorbiaceae a evergreen woody oil trees, ornamental trees garden, but also a good anti-atmospheric pollution of species. Growth is very rapid, 14 generations in Binchuan breeding three generations. However, it has not been widely recognized, valued and promoted by people. First, the economic value of seeds High oil content of large solid: dry shelled seeds oil content of more than 40%, can be used for industrial oils and edible oils. An adult stone chestnut (after 7 years of age) average annual yield of 1500 to 2000, preferably 3000 to 4000 seeds, 1000 seeds weight 9150