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工程用造型松
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造型松樹(shu)(shu)除經濟用途外,由于其樹(shu)(shu)姿雄偉、蒼勁,樹(shu)(shu)體高大(da)、長壽,造型松樹(shu)(shu)還具(ju)有重要(yao)的(de)觀賞價值。造型松樹(shu)(shu)是中(zhong)國(guo)很(hen)多風(feng)景區的(de)重要(yao)景觀成分。 松(song)樹(shu)(shu)(shu)為輪狀分枝,節間長,小枝比較細弱平直或略(lve)向下彎(wan)曲,針葉(xie)細長成束。其(qi)樹(shu)(shu)(shu)冠(guan)看起來篷(peng)松(song)不緊湊(cou),“松(song)”字正是其(qi)樹(shu)(shu)(shu)冠(guan)特征的(de)形象描述。所以,“松(song)”.是樹(shu)(shu)(shu)冠(guan)篷(peng)松(song)的(de)一類(lei)樹(shu)(shu)(shu)。松(song)樹(shu)(shu)(shu)堅(jian)固,壽命十分長。 松(song)(song)樹明顯的(de)(de)特征是葉成(cheng)針(zhen)(zhen)(zhen)狀,常2針(zhen)(zhen)(zhen)、3針(zhen)(zhen)(zhen)或5針(zhen)(zhen)(zhen)一(yi)束。如(ru)油松(song)(song)、馬(ma)尾松(song)(song)、黃山松(song)(song)的(de)(de)葉2針(zhen)(zhen)(zhen)一(yi)束,白皮松(song)(song)的(de)(de)葉3針(zhen)(zhen)(zhen)一(yi)束,紅松(song)(song)、華(hua)山松(song)(song)、五針(zhen)(zhen)(zhen)松(song)(song)的(de)(de)葉5針(zhen)(zhen)(zhen)一(yi)束。 無論是造(zao)(zao)型(xing)(xing)(xing)松(song)基(ji)地栽培的還是戶外生(sheng)長(chang)的造(zao)(zao)型(xing)(xing)(xing)松(song)。其喜歡生(sheng)長(chang)在(zai)潮(chao)濕(shi)排(pai)水良好(hao)的石灰(hui)性(xing)土壤中(zhong),耐寒、耐旱、耐鹽堿,在(zai)平坦或懸(xuan)崖上都(dou)能生(sheng)長(chang);在(zai)干(gan)旱、山(shan)嶺貧瘠、生(sheng)長(chang)緩慢、植株(zhu)稀疏(shu)。根(gen)較淺,但側根(gen)發達(da),發芽(ya)力強,修剪整齊,.,抗塵、抗二氧化硫、氯化氫等有(you)害氣體,分布廣泛,造(zao)(zao)型(xing)(xing)(xing)松(song)是我國常見的觀賞樹種(zhong)。 |