前言银合欢原产墨西哥南部尤卡坦(Yu-catan)半岛。大约在公元1600年以前传入菲律宾,其后印度尼西亚、夏威夷、毛里求斯岛、澳大利亚北部亦引种栽培。19世纪,印尼和非洲把银合欢作咖啡、可可、金鸡纳和胡椒等作物的荫蔽树或氮来源树种。20世纪初在印尼、斯里兰卡作 Preface Acacia is native to the Yu-catan peninsula in southern Mexico. About 600 BC before the introduction of the Philippines, then Indonesia, Hawaii, Mauritius Island, northern Australia also introduced cultivation. In the 19th century, Indonesia and Africa used acacias as shade trees or sources of nitrogen for crops such as coffee, cocoa, cinchona and pepper. Early 20th century in Indonesia, Sri Lanka for