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工程用造型松
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造型松樹(shu)除經濟用(yong)途外,由(you)于(yu)其樹(shu)姿雄偉(wei)、蒼勁(jing),樹(shu)體高大、長壽,造型松樹(shu)還具有(you)重要(yao)的觀(guan)(guan)賞價值。造型松樹(shu)是中國很多風景(jing)區的重要(yao)景(jing)觀(guan)(guan)成分。 松(song)(song)(song)樹(shu)(shu)為(wei)輪狀分枝(zhi),節間長,小(xiao)枝(zhi)比較(jiao)細(xi)弱平直或(huo)略向下彎曲,針葉細(xi)長成束。其樹(shu)(shu)冠看起來篷松(song)(song)(song)不緊湊,“松(song)(song)(song)”字正是(shi)其樹(shu)(shu)冠特征的形象描(miao)述(shu)。所以,“松(song)(song)(song)”.是(shi)樹(shu)(shu)冠篷松(song)(song)(song)的一類(lei)樹(shu)(shu)。松(song)(song)(song)樹(shu)(shu)堅(jian)固,壽命十分長。 松(song)樹明顯的(de)特征是(shi)葉(xie)成針(zhen)狀(zhuang),常(chang)2針(zhen)、3針(zhen)或5針(zhen)一束。如油松(song)、馬尾松(song)、黃山(shan)松(song)的(de)葉(xie)2針(zhen)一束,白皮松(song)的(de)葉(xie)3針(zhen)一束,紅松(song)、華山(shan)松(song)、五針(zhen)松(song)的(de)葉(xie)5針(zhen)一束。 無論是造型(xing)(xing)松(song)基地栽培的(de)還是戶外生(sheng)(sheng)長(chang)的(de)造型(xing)(xing)松(song)。其喜歡生(sheng)(sheng)長(chang)在潮(chao)濕排水良好的(de)石灰性土(tu)壤中,耐(nai)寒、耐(nai)旱、耐(nai)鹽堿,在平坦或懸崖(ya)上都能生(sheng)(sheng)長(chang);在干(gan)旱、山嶺貧瘠、生(sheng)(sheng)長(chang)緩慢(man)、植株稀疏。根(gen)較淺(qian),但側根(gen)發達(da),發芽力強,修剪(jian)整齊,.,抗塵、抗二氧(yang)化(hua)硫(liu)、氯化(hua)氫等有害氣(qi)體,分布廣泛,造型(xing)(xing)松(song)是我國常見的(de)觀賞(shang)樹種。 |