论文部分内容阅读
杜仲为中国特有经济树种,已有1000多年的栽培历史。为落叶乔木,树干通直,树冠圆头形至圆锥形,树形优美,叶片密集,叶色浓绿,遮荫面大,抗性强,病虫害少,根系发达,固土力强,耐干旱脊薄。杜仲对立地及气候适应幅度宽,最适宜生长的土壤是土层深厚,肥沃,湿润,排水良好,干旱地区也具有较强的生长能力。杜仲喜光,耐荫、耐水浸性差。萌芽力极强。杜仲是发展生态经济林的最佳树种之一,固土力强,无病虫害,而且具有综合开发利用的经济价值。(1)杜仲的药用价值:现代科学研究结果表明,杜仲叶在双向调节机体免疫功能、抗衰老、抗疲劳、增加冠状动脉血流量、防止便秘等功效上效果明显。是上等的老年保健品。(2)杜仲的工业价值:①杜仲
Eucommia special economic tree species in China, has more than 1,000 years of cultivation history. Deciduous tree trunk straight, canopy round-shaped to conical, tree-shaped, dense leaves, dark green leaf color, strong shade, strong resistance, less pests and diseases, developed root system, soil strong, drought-resistant Thin ridge. Eucommia on the opposite site and climate wide range of adaptation, the most suitable soil for growth is deep, fertile, moist, well drained, arid areas also have strong growth capacity. Du Zhong Xi light, shade, water immersion poor. Germination strong. Eucommia is one of the best tree species for developing eco-economic forest. It has strong earth-fixing power and no pests and diseases, and has the economic value of comprehensive development and utilization. (1) medicinal value of Eucommia: Modern scientific research shows that Eucommia leaf in the two-way regulation of immune function, anti-aging, anti-fatigue, increase coronary blood flow, prevent constipation and other effects on the effect is obvious. Is the finest health care products. (2) Eucommia industrial value: ① Eucommia