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金合欢属有12D0多个种,是一个大属,分布范围很广。其中大多数种分布在热带和亚热带的干旱或中干旱地区,在保持水土、防风固沙、营造防护林、提供薪炭、用材、栲胶、绿肥等方面都起了不少作用。我国原产的和引种成功且历史较长的金合欢属仅有18种,目前正在进行较广泛的引种试验.虽然引种试验的时间较短,但其中的马占相思、肯氏相思、纹荚相思等种已显现直干速生的优良特性.因此,金合欢属在提供我国南方热带、亚热带地区的耐干旱瘠薄、优质丰产的多用途树种方面有很大潜力.由于是引进的树种,故引种成功后必
Acacia has more than 12D0 species, is a large genus, a wide range of distribution. Most of them are distributed in the arid or mid-arid regions of the tropics and subtropics and play a role in keeping water and soil, preventing wind and sand, creating shelterbelts, providing firewood, timber, glue and green manures. There are only 18 species of Acacia native and introduced successfully in China and there is only a long history of Acacia, and a relatively wide range of introduction tests are currently underway. Although the introduction test is relatively short, Acacia mangium, Acacia konjac, Acacia and other species have shown the excellent characteristics of straight dry fast, therefore, acacia in the southern tropical, subtropical regions of our drought-infertile infertility, high yield and quality of multi-purpose species have great potential.Because it is the introduction of species, it is introduced After the success will be