分布于(yu)中(zhong)國(guo)云南中(zhong)部(bu)、西部(bu)至(zhi)西北部(bu)和四川西部(bu)。生長于(yu)山(shan)地1500-2000米的(de)山(shan)地常綠闊葉林中(zhong)。喜濕潤和土壤肥沃的(de)山(shan)坡。為深根性樹種(zhong),生長良好(hao)。適宜在年平(ping)(ping)均(jun)溫(wen)(wen)度13-21℃,≥10℃活(huo)動積溫(wen)(wen)4500-7000℃,年降(jiang)水量(liang)900-1600毫米,年平(ping)(ping)均(jun)相對濕度大于(yu)70%的(de)地區生長。
喬(qiao)木,高達30米(mi),胸徑達80厘米(mi)。枝(zhi)條圓(yuan)柱形(xing)(xing),具縱(zong)向條紋,幼時(shi)綠(lv)色(se),老(lao)時(shi)褐色(se),無(wu)毛。葉(xie)互生,疏離(li),倒卵形(xing)(xing)或(huo)倒卵狀橢圓(yuan)形(xing)(xing),間或(huo)橢圓(yuan)形(xing)(xing),長(5)7-9(12)厘米(mi),寬(2)3.5-4(5)厘米(mi),先端(duan)短漸(jian)尖(jian),尖(jian)頭(tou)鈍(dun),基部楔形(xing)(xing),兩側(ce)有時(shi)不對稱,革(ge)質(zhi),上面(mian)(mian)綠(lv)色(se)或(huo)黃綠(lv)色(se),光亮(liang),下(xia)(xia)面(mian)(mian)淡(dan)綠(lv)色(se)或(huo)粉(fen)綠(lv)色(se),兩面(mian)(mian)均無(wu)毛,邊(bian)緣(yuan)軟骨(gu)質(zhi)而背(bei)卷(juan),中(zhong)脈(mo)上面(mian)(mian)下(xia)(xia)部略(lve)凹陷,但上部近(jin)于平坦,下(xia)(xia)面(mian)(mian)明(ming)顯凸起,側(ce)脈(mo)每邊(bian)7-9條,有時(shi)分又,弧曲,兩面(mian)(mian)凸起,橫脈(mo)及小脈(mo)網狀,兩面(mian)(mian)明(ming)顯構成蜂(feng)巢狀窩穴;葉(xie)柄(bing)長1-1.75厘米(mi),腹面(mian)(mian)具槽,背(bei)面(mian)(mian)圓(yuan)形(xing)(xing),無(wu)毛。
花(hua)(hua)(hua)(hua)(hua)(hua)序(xu)由(you)1-3花(hua)(hua)(hua)(hua)(hua)(hua)的聚傘(san)花(hua)(hua)(hua)(hua)(hua)(hua)序(xu)組成(cheng),有時圓(yuan)錐花(hua)(hua)(hua)(hua)(hua)(hua)序(xu)上部(bu)或(huo)全(quan)部(bu)的聚傘(san)花(hua)(hua)(hua)(hua)(hua)(hua)序(xu)僅(jin)具(ju)1花(hua)(hua)(hua)(hua)(hua)(hua),后者(zhe)花(hua)(hua)(hua)(hua)(hua)(hua)序(xu)呈假總(zong)狀(zhuang)(zhuang)花(hua)(hua)(hua)(hua)(hua)(hua)序(xu),花(hua)(hua)(hua)(hua)(hua)(hua)序(xu)長(chang)(2)3.5-7(9)厘(li)米,多數,生(sheng)于短枝下部(bu),總(zong)梗長(chang)(1)1.5-3(3.5)厘(li)米,與(yu)各級序(xu)軸及(ji)花(hua)(hua)(hua)(hua)(hua)(hua)梗無(wu)毛(mao)(mao);苞(bao)片及(ji)小苞(bao)片早落,苞(bao)片寬(kuan)卵(luan)形(xing)或(huo)近(jin)圓(yuan)形(xing),長(chang)5-8毫(hao)(hao)(hao)米,外(wai)層苞(bao)片較小,外(wai)面(mian)密被(bei)(bei)銹色(se)(se)(se)柔(rou)(rou)毛(mao)(mao),內(nei)(nei)面(mian)近(jin)無(wu)毛(mao)(mao),小苞(bao)片線形(xing),長(chang)達4毫(hao)(hao)(hao)米,寬(kuan)僅(jin)0.3毫(hao)(hao)(hao)米,外(wai)面(mian)被(bei)(bei)銹色(se)(se)(se)柔(rou)(rou)毛(mao)(mao)。花(hua)(hua)(hua)(hua)(hua)(hua)淡(dan)綠色(se)(se)(se)、黃綠色(se)(se)(se)或(huo)黃玉(yu)白色(se)(se)(se),長(chang)4-5毫(hao)(hao)(hao)米,花(hua)(hua)(hua)(hua)(hua)(hua)梗長(chang)4-10毫(hao)(hao)(hao)米;花(hua)(hua)(hua)(hua)(hua)(hua)被(bei)(bei)外(wai)面(mian)無(wu)毛(mao)(mao),內(nei)(nei)面(mian)被(bei)(bei)柔(rou)(rou)毛(mao)(mao),筒倒錐形(xing),長(chang)約(yue)1毫(hao)(hao)(hao)米,花(hua)(hua)(hua)(hua)(hua)(hua)被(bei)(bei)裂片長(chang)圓(yuan)形(xing),先端銳尖,外(wai)輪(lun)稍(shao)短,長(chang)3.5-4毫(hao)(hao)(hao)米,內(nei)(nei)輪(lun)長(chang)4-4.5毫(hao)(hao)(hao)米,寬(kuan)不及(ji)2毫(hao)(hao)(hao)米;花(hua)(hua)(hua)(hua)(hua)(hua)絲(si)基(ji)部(bu)被(bei)(bei)柔(rou)(rou)毛(mao)(mao),第三輪(lun)雄蕊稍(shao)長(chang),花(hua)(hua)(hua)(hua)(hua)(hua)絲(si)基(ji)部(bu)有成(cheng)對具(ju)柄(bing)的圓(yuan)狀(zhuang)(zhuang)腎形(xing)腺體,柄(bing)長(chang)達花(hua)(hua)(hua)(hua)(hua)(hua)絲(si)之半,基(ji)部(bu)被(bei)(bei)柔(rou)(rou)毛(mao)(mao);子房(fang)卵(luan)珠(zhu)形(xing),無(wu)毛(mao)(mao),長(chang)1.5毫(hao)(hao)(hao)米,花(hua)(hua)(hua)(hua)(hua)(hua)柱(zhu)絲(si)狀(zhuang)(zhuang),與(yu)子房(fang)近(jin)等長(chang),柱(zhu)頭(tou)小,頭(tou)狀(zhuang)(zhuang)。
果橢圓形,長約1.4厘米(mi),先端具小尖頭,熟時黑藍色,具白粉,無毛;宿存(cun)花被裂片不(bu)增大,反(fan)折;果梗不(bu)增粗(cu),頂端粗(cu)約1.2毫米(mi)。花期4-5月(yue),果期6-10月(yue)。
于(yu)冬季(ji)對定植地進行(xing)(xing)整(zheng)地,及(ji)時(shi)清理(li)苗(miao)圃地雜草(cao),挖穴(xue)規格(ge)50厘(li)米(mi)×50厘(li)米(mi)×40厘(li)米(mi),株(zhu)行(xing)(xing)距根據培植的(de)(de)苗(miao)木(mu)規格(ge)來(lai)確定,可以采用2米(mi)×1米(mi)的(de)(de)株(zhu)行(xing)(xing)距,或2米(mi)×2米(mi)的(de)(de)株(zhu)行(xing)(xing)距。經過幾個(ge)月的(de)(de)晾曬后,于(yu)移栽(zai)前進行(xing)(xing)回土,回表土1/2,并施0.2千克復(fu)合肥或農家肥,與土壤拌勻,然后再回滿土,使穴(xue)中央(yang)呈面包狀。
移栽前將小苗(miao)的葉片(pian)(pian)(pian)摘除,僅保(bao)(bao)留頂(ding)部幾片(pian)(pian)(pian)葉片(pian)(pian)(pian),并依次擺放于每1個種植(zhi)(zhi)(zhi)穴旁。定(ding)植(zhi)(zhi)(zhi)時,去除小苗(miao)的營養袋,注意(yi)保(bao)(bao)持袋土完整,放入穴內扶正并填滿(man)土,栽植(zhi)(zhi)(zhi)深度以覆蓋住原先的基(ji)質即可,踩實圍塘,澆足定(ding)根水。由于在(zai)3月份(fen)左右定(ding)植(zhi)(zhi)(zhi),云(yun)南氣候較(jiao)為干旱,要進行覆蓋地膜,以保(bao)(bao)溫保(bao)(bao)濕,提(ti)高(gao)定(ding)植(zhi)(zhi)(zhi)的滇潤楠苗(miao)的成(cheng)活率。
定植后要定期檢查苗(miao)(miao)木(mu)生(sheng)(sheng)(sheng)長(chang)情況(kuang),對空塘進(jin)(jin)行補植,每15天左(zuo)右澆水1次,待5月份進(jin)(jin)入雨季時開始施肥(fei),夏季以(yi)施氮(dan)肥(fei)為(wei)主,秋季施鉀肥(fei)。第1年種(zhong)植的(de)滇潤(run)楠苗(miao)(miao),要注意及(ji)時去除基部萌生(sheng)(sheng)(sheng)的(de)小(xiao)芽(ya),以(yi)及(ji)去除多余的(de)側枝,保留一個明顯(xian)生(sheng)(sheng)(sheng)長(chang)旺盛的(de)頂枝。之后幾(ji)年注意修剪側枝及(ji)病蟲害防治,并根據生(sheng)(sheng)(sheng)長(chang)情況(kuang)控(kong)制施肥(fei)量,在苗(miao)(miao)木(mu)主干高(gao)2米左(zuo)右時,可進(jin)(jin)行摘(zhai)心(xin),定向培(pei)育樹形。苗(miao)(miao)木(mu)達到出圃(pu)要求(qiu)時,則需要提前(qian)進(jin)(jin)行斷根,培(pei)育成熟(shu)苗(miao)(miao),提高(gao)大(da)苗(miao)(miao)移(yi)栽后的(de)成活率。
滇潤楠花(hua)期(qi)4-5月(yue),果期(qi)6-10月(yue),在昆明主(zhu)要(yao)集(ji)中在8月(yue)成熟,當漿(jiang)(jiang)果呈紫色時(shi),會有零星的漿(jiang)(jiang)果從樹上掉落,此時(shi)可以(yi)進行采(cai)收。對采(cai)集(ji)的漿(jiang)(jiang)果,應及時(shi)揉去果皮,并用(yong)自來水(shui)清洗干凈后,自然(ran)陰(yin)干水(shui)氣(qi),去除雜質,放置(zhi)在陰(yin)涼干燥的地方密閉(bi)儲(chu)存(cun),待第2年春天時(shi)進行點播。
為了(le)提高定植后滇潤(run)楠的(de)成活率,一(yi)般以采(cai)用(yong)(yong)營養袋育(yu)苗(miao)為佳。基質可以選(xuan)用(yong)(yong)黃土(tu)或紅心與(yu)農(nong)家肥混合(he),一(yi)般按(an)2:1的(de)比例充分(fen)混勻后,用(yong)(yong)多菌(jun)靈、甲醛等進行土(tu)壤消(xiao)毒,并用(yong)(yong)塑料膜覆蓋(gai)20天左右,待基質發酵后進行分(fen)裝(zhuang),營養袋規(gui)格(ge)可采(cai)用(yong)(yong)8厘米(mi)×10厘米(mi)。基質分(fen)裝(zhuang)完后,按(an)1米(mi)寬的(de)苗(miao)床進行擺放(fang),長度根據(ju)苗(miao)圃地大(da)小而定,以便于(yu)管理為目(mu)的(de)。
先將(jiang)滇潤楠種(zhong)(zhong)子(zi)用(yong)自來水浸泡,去(qu)除漂浮的壞種(zhong)(zhong)子(zi),并用(yong)0.3%的高(gao)(gao)錳酸鉀(jia)溶液(ye)消毒(du)30分鐘,之后(hou)(hou)用(yong)始溫(wen)為(wei)45℃的水浸種(zhong)(zhong)12小(xiao)(xiao)時(shi),使種(zhong)(zhong)子(zi)充分吸收(shou)(shou)水分。最后(hou)(hou)用(yong)粗河沙(sha)拌(ban)種(zhong)(zhong),河沙(sha)與(yu)種(zhong)(zhong)子(zi)比(bi)例為(wei)2:1,將(jiang)拌(ban)均(jun)的種(zhong)(zhong)子(zi)統一放(fang)入花盆中(zhong),并用(yong)塑(su)料膜(mo)蓋緊,置入大棚(peng)中(zhong)進行催(cui)芽(ya),大棚(peng)內溫(wen)度為(wei)25-40℃之間(jian)。15天(tian)后(hou)(hou),部分種(zhong)(zhong)子(zi)開(kai)始破(po)殼,胚根(gen)露(lu)出,當80%左右種(zhong)(zhong)子(zi)開(kai)裂后(hou)(hou),即可進行點(dian)播。經過催(cui)芽(ya)的種(zhong)(zhong)子(zi)點(dian)播后(hou)(hou)能夠(gou)快速(su)出土,并有助于根(gen)系的迅(xun)速(su)延(yan)伸,從(cong)基質中(zhong)吸收(shou)(shou)養分,保(bao)證小(xiao)(xiao)苗正(zheng)常(chang)生長(chang),提高(gao)(gao)小(xiao)(xiao)苗對高(gao)(gao)溫(wen)、干(gan)旱的抵抗能力。
為了保證苗木有較(jiao)長的(de)生長過程(cheng),一(yi)般采取(qu)春播(bo),在每(mei)年的(de)3月份左右。種(zhong)子點(dian)播(bo)前2天(tian),用(yong)(yong)水(shui)充(chong)分澆透基(ji)質(zhi),點(dian)播(bo)時,用(yong)(yong)手指刨開基(ji)質(zhi),點(dian)播(bo)深度2-3厘米,并覆(fu)蓋好,種(zhong)子點(dian)播(bo)完畢后(hou)澆透水(shui)1次。由于云(yun)南的(de)春季仍處于旱季,降雨量極少,因此,需(xu)要(yao)對(dui)基(ji)質(zhi)表面(mian)進行覆(fu)蓋,覆(fu)蓋物采用(yong)(yong)稻草或遮陽網等均可。以減少水(shui)分蒸發(fa),防止土(tu)(tu)壤(rang)板結,并提(ti)高基(ji)質(zhi)的(de)溫(wen)度,給種(zhong)子出土(tu)(tu)創造一(yi)個良(liang)好的(de)環境。
種子點播后,根據基質的水(shui)分情況,掌握澆水(shui)次數和澆水(shui)量(liang),以早晚澆水(shui)為宜。15天左右小(xiao)苗(miao)(miao)出土,當超過50%的種子出苗(miao)(miao)后,及(ji)時揭去覆蓋(gai)物,避(bi)免苗(miao)(miao)木(mu)(mu)彎曲,并搭遮陽網進(jin)行遮光,避(bi)免小(xiao)苗(miao)(miao)灼傷。1個月后可用低濃度(du)(du)的農家肥(fei)(fei)或肥(fei)(fei)料進(jin)行追肥(fei)(fei),在9月份前以施氮肥(fei)(fei)為主,使苗(miao)(miao)木(mu)(mu)快速(su)生(sheng)長;9月份后可適當施1-2次鉀(jia)肥(fei)(fei),加(jia)速(su)苗(miao)(miao)木(mu)(mu)的木(mu)(mu)質化程度(du)(du),到第(di)2年春(chun)天移栽前對苗(miao)(miao)木(mu)(mu)進(jin)行干旱(han)鍛煉,增強苗(miao)(miao)木(mu)(mu)抗(kang)逆性。
滇(dian)潤楠四季常綠(lv)(lv)(lv),春葉紅艷(yan),樹(shu)(shu)冠(guan)(guan)圓(yuan)整(zheng),是優良(liang)的綠(lv)(lv)(lv)化(hua)、防(fang)風樹(shu)(shu)種(zhong);材質優良(liang),可(ke)作建筑、家具(ju)等(deng)用材;葉、果(guo)可(ke)提取芳香油(you)(you),葉含油(you)(you)率0.75%,果(guo)含油(you)(you)率0.38%;樹(shu)(shu)皮(pi)和葉研粉可(ke)作薰香及蚊香的調和劑、飲用水的凈化(hua)劑。滇(dian)潤楠具(ju)有(you)樹(shu)(shu)齡長、冠(guan)(guan)大蔭濃、樹(shu)(shu)型優美、萌(meng)芽力強、耐(nai)修剪等(deng)特點,是很(hen)好的園(yuan)林綠(lv)(lv)(lv)化(hua)樹(shu)(shu)種(zhong),已(yi)列(lie)入昆明市園(yuan)林綠(lv)(lv)(lv)化(hua)規(gui)劃中采用的鄉土樹(shu)(shu)種(zhong)及昆明市市民最喜愛(ai)的綠(lv)(lv)(lv)化(hua)樹(shu)(shu)種(zhong)之一。