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华北落叶松为落叶乔木,高可达25～30米,胸径1米左右,树干通直,是一个速生针叶树种。它耐低温,抗严寒,树形美观,抗烟能力强。其材质较硬,力学强度高,抗弯力大,耐水湿,抗腐朽,可作桩木、桥梁、电杆、枕木、跳板等用材。树皮富含单宁,是良好的栲胶原料。种子含油18％,可制油脂。但木材干燥性能不佳,加工较困难。1976年以来,我们从宝鸡市取来种子,在马头滩林场播种育苗并造林,目前幼林生长健壮,无病害。最高单株已达2.8米,地径4.2厘米;一般高1.9米,地径2.9厘米。一、引进区的自然概况马头滩附近海拔1660米,年平均气温
Larix principis-rupprechtii is deciduous tree, with a height of 25-30 meters and a diameter of 1 meter at its chest. The tree trunk is straight, which is a fast-growing conifer species. It is low temperature, anti-cold, beautiful tree, anti-smoking ability. Its hard material, high mechanical strength, bending resistance, water wet, anti-rotten, can be used for pile wood, bridges, poles, sleepers, springboard and other timber. Bark is rich in tannin and is a good gum material. Seeds 18% oil, can be fat. However, wood drying performance is poor, more difficult to process. Since 1976, we have brought seeds from Baoji City, sown nurseries and reforestation plants at Maotantan Forest Farm. At present, the young forests are robust and disease-free. The highest single plant has reached 2.8 meters, diameter 4.2 cm; generally 1.9 meters high, 2.9 cm diameter. First, the natural introduction of the introduction of the area Ma Tau Beach near 1660 meters above sea level, the average annual temperature