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一、概述金合欢属(Acacia,Milld.)是含羞草亚科最大的属,在整个豆科也居第二位,全世界约有1200多种。它是一个泛热带的属,大多数分布在干旱或半干旱地区。在我国,原产和已基本引种成功的有18种,主要分布于北热带和南亚热带;目前正进行较广泛的引种试验,预计今后将会有更大的发展。这些金合欢属树种在保持水土,防风固沙,改良土壤,营造防护林及提供薪炭、用材、栲胶、绿肥等方面,起了一定的作用。
First, an overview Acacia (Acacia, Milld.) Is the largest mimosa subfamily genus, also ranks second in the whole legume, there are about 1200 kinds of the world. It is a pantropical genus, mostly in arid or semi-arid regions. In our country, there are 18 native species and their basic introductions. They are mainly distributed in the northern and southern subtropics. We are currently conducting more extensive introductory experiments and are expected to see further development in the future. These Acacia species play a role in maintaining soil and water, preventing wind and sand, improving the soil, creating shelterbelts and providing fuelwood, timber, glue and green manure.