一、研制目的为了培育珍贵树种和良种壮苗,提高造林成活率,延长造林时间,采用容器育苗造林,是行之有效的方法。我们从1980年4月至1981年10月用一年半的时间进行了“BM——4手持式营养杯育苗铁模制杯器”的研制,并已研制成功第四代样机,通过鉴定,现已正式交付使用。 First, the purpose of development In order to cultivate precious tree species and seedlings, improve survival rate of afforestation, extension of afforestation time, the use of container seedling afforestation, is an effective method. From April 1980 to October 1981, we carried out the research and development of the “BM - 4 hand - held nutrition cup nursery iron mold cup” for one year and a half and has successfully developed the fourth generation prototype. Through the identification, Now officially delivered.