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工程用造型松
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造型(xing)(xing)松(song)樹除(chu)經濟(ji)用(yong)途外,由(you)于其樹姿雄偉、蒼勁(jing),樹體高大、長(chang)壽(shou),造型(xing)(xing)松(song)樹還具有重要(yao)(yao)的觀賞價值(zhi)。造型(xing)(xing)松(song)樹是中國很多風(feng)景區的重要(yao)(yao)景觀成分(fen)。 松樹(shu)(shu)(shu)為輪(lun)狀(zhuang)分枝(zhi),節間長(chang),小(xiao)枝(zhi)比較細弱平直或略向下彎曲,針(zhen)葉細長(chang)成(cheng)束。其(qi)(qi)樹(shu)(shu)(shu)冠看(kan)起來篷(peng)松不緊湊(cou),“松”字正(zheng)是(shi)其(qi)(qi)樹(shu)(shu)(shu)冠特征的形象描述(shu)。所以,“松”.是(shi)樹(shu)(shu)(shu)冠篷(peng)松的一類樹(shu)(shu)(shu)。松樹(shu)(shu)(shu)堅(jian)固,壽命十分長(chang)。 松(song)(song)(song)(song)樹(shu)明顯的特征是葉(xie)成(cheng)針狀,常(chang)2針、3針或5針一(yi)束(shu)。如油(you)松(song)(song)(song)(song)、馬尾松(song)(song)(song)(song)、黃山松(song)(song)(song)(song)的葉(xie)2針一(yi)束(shu),白(bai)皮松(song)(song)(song)(song)的葉(xie)3針一(yi)束(shu),紅松(song)(song)(song)(song)、華山松(song)(song)(song)(song)、五針松(song)(song)(song)(song)的葉(xie)5針一(yi)束(shu)。 無論是(shi)造(zao)(zao)型(xing)(xing)松(song)(song)基地栽培(pei)的(de)還是(shi)戶外(wai)生(sheng)(sheng)長(chang)的(de)造(zao)(zao)型(xing)(xing)松(song)(song)。其(qi)喜歡生(sheng)(sheng)長(chang)在(zai)潮濕排水(shui)良好(hao)的(de)石灰性土壤(rang)中,耐(nai)寒、耐(nai)旱(han)、耐(nai)鹽堿,在(zai)平坦或(huo)懸崖(ya)上都能(neng)生(sheng)(sheng)長(chang);在(zai)干(gan)旱(han)、山嶺貧(pin)瘠(ji)、生(sheng)(sheng)長(chang)緩(huan)慢、植株稀疏。根(gen)較淺,但側根(gen)發(fa)達,發(fa)芽力強,修(xiu)剪整齊,.,抗(kang)塵(chen)、抗(kang)二(er)氧化硫(liu)、氯化氫等有(you)害氣體,分布廣泛,造(zao)(zao)型(xing)(xing)松(song)(song)是(shi)我國常見的(de)觀(guan)賞樹種。 |