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南洋楹(Albizia falcataria (Linn.) Fosberg),又(you)名仁(ren)仁(ren)樹(shu)(shu)、仁(ren)人木(mu),常綠大喬木(mu),高10-25M.樹(shu)(shu)冠廣(guang)傘形,伸展開闊,樹(shu)(shu)形美觀.生長(chang)迅速,為著(zhu)名的速生樹(shu)(shu)種.一(yi)般4-5年便(bian)可砍伐利用.原產馬(ma)六(liu)甲(jia)及印度尼西亞馬(ma)魯(lu)古群島(dao),現廣(guang)植于(yu)各(ge)熱帶地區(qu)
南洋楹常(chang)綠(lv)大喬木,樹(shu)干(gan)通直,高可達(da)45米(mi)(mi)(mi)(mi);嫩枝圓(yuan)柱狀(zhuang)或(huo)微有棱(leng),被柔(rou)(rou)毛.托葉(xie)錐(zhui)形,早落(luo).羽(yu)片(pian)6-20對,上部(bu)(bu)的(de)通常(chang)對生(sheng)(sheng),下部(bu)(bu)的(de)有時(shi)互生(sheng)(sheng);總(zong)葉(xie)柄基部(bu)(bu)及葉(xie)軸中部(bu)(bu)以上羽(yu)片(pian)著生(sheng)(sheng)處有腺體(ti);小葉(xie)6-26對,無柄,菱狀(zhuang)長(chang)(chang)(chang)圓(yuan)形,長(chang)(chang)(chang)1-厘(li)米(mi)(mi)(mi)(mi),寬(kuan)3-6毫米(mi)(mi)(mi)(mi),先端急尖,基部(bu)(bu)圓(yuan)鈍或(huo)近截形;中脈偏(pian)于上邊緣.穗狀(zhuang)花(hua)(hua)序腋生(sheng)(sheng),單生(sheng)(sheng)或(huo)數個組(zu)成圓(yuan)錐(zhui)花(hua)(hua)序;花(hua)(hua)初白色(se),后變黃;花(hua)(hua)萼鐘狀(zhuang),長(chang)(chang)(chang)毫米(mi)(mi)(mi)(mi);花(hua)(hua)瓣長(chang)(chang)(chang)5-7毫米(mi)(mi)(mi)(mi),密被短柔(rou)(rou)毛,僅基部(bu)(bu)連合.莢果帶形,長(chang)(chang)(chang)10-13厘(li)米(mi)(mi)(mi)(mi),寬(kuan)-厘(li)米(mi)(mi)(mi)(mi),熟時(shi)開(kai)裂(lie);種子多顆,長(chang)(chang)(chang)約7毫米(mi)(mi)(mi)(mi),寬(kuan)約3毫米(mi)(mi)(mi)(mi).花(hua)(hua)期4-7月.一般4-5年便(bian)可砍伐(fa)利(li)用.在(zai)原產(chan)地胸徑年生(sheng)(sheng)長(chang)(chang)(chang)量可達(da)10厘(li)米(mi)(mi)(mi)(mi)以上,4-5年林分每畝材積(ji)生(sheng)(sheng)長(chang)(chang)(chang)量-立方(fang)米(mi)(mi)(mi)(mi),它的(de)生(sheng)(sheng)長(chang)(chang)(chang)速度比杉木快6-8倍,比按樹(shu)、木麻黃快2-3倍.在(zai)熱帶地區享有"植(zhi)物賽跑家"的(de)美譽.