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杜仲是一种落叶乔木。分布在我国长江中游各省。树皮入药,叶片也有一定的药效;木材可制家俱和供建筑用;种子可供榨油:杜仲所产的硬橡胶为制海底电缆和粘着剂的重要原料。过去杜仲的繁殖,用翅果浸种出芽播种,但出苗慢,发芽率低,一般发芽率为3—30％。我们分析了影响杜仲翅果发芽率不高的原因,采用剪破翅果,取出种仁直接播种。实践证明,用种仁直接播种,上盖1厘米左右砂土或黄泥松土,在春季四月份适温(平均气温 18—19℃)和保持
Eucommia is a deciduous tree. Distribution in our middle reaches of the Yangtze River provinces. Bark into the medicine, the leaves have a certain effect; wood can be used for furniture and construction; seeds for oil: eucommia hard rubber for the system of submarine cables and adhesives important raw materials. In the past, the propagation of eucommia bark was planted and soaked with samara, but its emergence was slow and its germination rate was low. The average germination rate was 3-30%. We analyzed the reasons that affect the germination rate of Eucommia unsweakened fruit, the use of sheathed winged fruit, remove the seeds directly sown. Practice has proved that direct seeding with seeds, covered with about 1 cm of sand or yellow mud soil, in the spring in April suitable temperature (average temperature 18-19 ℃) and maintain