把苗圃大苗区所培育的移植苗用作栽培材料是提高造林工作效率的巨大潜力。现在已成功地制订出培育云杉移植苗的工艺,云杉是一个在比松树年龄较老时都能很好经受移植的树种。这种工艺的实质就是在把实生苗栽植到稠密的大苗区继续培育以前修剪其根系。培育松树的移植苗和已长本的实生苗的充分有效的工艺直到目前为止,无论在我国或国 The use of transplants grown in seedling nurseries as planting materials is a great potential for improving afforestation efficiency. Sprouting of spruce seedlings has now been successfully established, and spruce is a tree species that is well tolerated for transplanting when older than pine. The essence of this process is to plant seedlings in the dense seedling area to cultivate the previous pruning of its roots. The full and effective process of cultivating pine seedlings and long-established seedlings So far, no matter in our country or country