【摘要】 针对苔草种子萌发困难限制该种植物广泛利用的问题，研究了机械处理、层积处理以及不同浓度的酸、碱及丙酮、激素处理对我国北方两种常见苔草——异穗苔草和砾苔草萌发的影响，并确定了这两种苔草种子萌发适宜的光、温条件。结果表明，用１０％或２０％的氢氧化钠浸种４～１０ｈ，异穗苔草种子的发芽率提高到９０％以上；而用９８％浓硫酸浸种２０～３０ｍｉｎ，异穗苔草和砾苔草的发芽率都达到了８８％。低温层积６个月以上，对促进苔草种子的萌发也有显著的作用，而且苔草种子萌发需２０℃以上的温度，光照对两种苔草的萌发没有影响。更多还原

【Abstract】 In order to solve the problem of difficult germination of Carex seeds,the seeds of Carex heterostachya and C.stenophylloides were treated with mechanical methods,depositing under damp and low temperature conditions,and chemically by a variety of agents.It was shown that dipping the seeds in a NaOH solution of 10% or 20% concentration for 4～10 hours could increase the rate of germination up to 90% or above;dipping in H 2SO 4 of 98% concentration for 20～30 minutes would make a rate of 88%;low temperature depositing for 6 months or longer also had a significant effect on germination.In all the above cases a temperature of 20 ℃ or above was necessary for germination.No significant effect of light on germination was observed.更多还原