The main drives of succession include canopy density of rubber forest, management, climate, soil condition and the biological properties of vegetation.
演替驱动力主要有:胶林郁闭度、胶林抚育管理措施、气候和土壤条件以及胶林植被本身的生物学特性。
Rubber trees intercropping with Alpinia villosum was the best to improve soil fertility.
以橡胶间种砂仁对土壤肥力的提高最为理想。
Soil acidization, low organic substance and effective nutrients, nutrition defect and disorder are the major problems in rubber plantations of Yunnan.
云南橡胶园土壤存在明显酸化、有机质下降、有效养分降低、缺素和营养失调等问题。
Experimental results show that a soil substrate containing waste crumb rubber with a small grain diameter has the best average water retaining capacity and stronger water retaining capacity.
实验结果表明含废胶粒径小的土壤基质的平均保水力最好,具有较强的水分维持能力。
The pressure-sensitive dilatant materials, such as rock, soil, foam metal, polymeric material, rubber and so on, are the most widely applied materials in nature.
压力敏感性材料(包括岩石、土壤、泡沫金属、聚合物材料、橡胶等)是自然界中应用最广泛的材料。
It confirms the assumption that wasted tire rubber powder can improve the expansive soil greatly. It provides a new improving method to reduce the engineering disaster caused by the expansive soil.
同时证实了废弃轮胎胶粉改良膨胀土效果较为显著,为膨胀土改良提供了一个新的改良方法。
Interlocked rubber floor from old tyres covers all the recreational areas. that interlock system maintains the soil pearmeable.
旧轮胎改造的互锁的橡胶地板覆盖了所有的娱乐区域,这种互锁系统维持土壤的渗透性。
Under earthquake, the sway movement of lead-rubber bearing base-isolated structure with soft soil base is more obvious.
地震作用下软土地基—铅芯橡胶支座隔震结构的摇摆运动较明显。
Under earthquake, the sway movement of lead-rubber bearing base-isolated structure with soft soil base is more obvious.
地震作用下软土地基—铅芯橡胶支座隔震结构的摇摆运动较明显。
应用推荐