德宏州西南桦双层膜育苗技术研究

自1995年以来,通过在西南桦育苗生产实践中的探索和创新,采用所谓的"双层膜"育苗技术,在播种出苗期,采取在育苗大棚内又盖小棚的方法,提高了种子发芽率和幼苗的生长速度,较常规育苗方法缩短了苗木出圃时间、降低了育苗成本、提高了苗木质量.对相关的采种母树选择、采种时间、苗圃整地、大棚建造、播种、幼苗管理、炼苗及苗木出圃等一系列的育苗技术流程进行了详细论述.

Study on the Skills of Raising Seedlings of Betula alnoides with Dual-layer Membrane in Dehong Prefecture

Since 1995,the skill of raising seedlings with dual-layer membrane had been adopted in the innovation of Betula alnoides practice.The method of small shed in big shed improved the seed germination rate and seedling growth,and it also shortened time,reduced expense,and increased seedling quality compared with routine raising method.The paper discusses the detailed aspects of the technique flow such as mother tree selection,time of collecting seed,preparing land of nursery,big shed building,sowing,young seedlings' supervision,and so on.