一、樟子松生物学特性樟子松为松科松属,常绿乔木,树高15～20米,最高30米。最大胸径1米左右,树冠卵形至广卵形,老树皮较厚有纵裂,黑褐色。树干上部树皮很薄,褐黄色或淡黄色,薄片脱落。叶2针1束,稀有3针,粗梗、稍扁、扭曲,长5～8厘米,树脂道7～11条,维管间距较大,种子大小不等,黑褐色、灰黑色、黑色不等。樟子松耐寒性强,能耐-40℃～-50℃低温,旱生,根系发达 First, Pinus sylvestris biological characteristics Pinus sylvestris pine Pinus, evergreen trees, tree height 15 to 20 meters, up to 30 meters. Largest diameter of about 1 meters, the crown oval to a wide oval, thick old bark longitudinal crack, dark brown. Upper bark bark is thin, brown or yellow, thin sheet off. Leaves 2 needles 1 bunch, rare 3 needles, coarse stems, slightly flattened, twisted, 5 to 8 cm long, 7 to 11 resin channels, larger vascular spacing, seed sizes, dark brown, grayish black, Wait. Pinus sylvestris cold-resistant, resistant to -40 ℃ ~ -50 ℃ low temperature, drought, root system developed