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四川丹巴营林处工人和科研技术人员,在海拔3000多米的边尔林区进行塑料薄膜房培育云杉苗的科学实验,经过半年多来的努力,获得良好效果。采用塑料薄膜房育苗,产量高,生长快。当年生云杉苗在入冬前测产证明,亩产达341万多株,为一般苗圃产量的5倍;苗子长得快,长得健壮。生长期5个月的云杉苗最高达6厘米,平均3.3厘米。云杉苗在一般苗圃要3—4年才能出圃栽植,塑料薄膜培育的云杉,预计2年就可出圃。这种育苗技术,由于不搭设荫棚、防霜
Sichuan Danba camp forest workers and scientific research and technical personnel at an altitude of more than 3000 meters in the Seoul Film District plastic spruce nursery cultivation of scientific experiments, after more than six months of hard work, get good results. Plastic film room nursery, high yield, fast growth. Perennial spruce seedlings in winter before the test proves that per mu reached more than 341 million strains, 5 times the yield of general nursery; seedlings grow fast, grow robust. Growth of 5 months of spruce seedlings up to 6 cm, an average of 3.3 cm. Spruce seedlings in general nurseries to 3-4 years to nursery planting, plastic film cultivation of spruce, is expected to 2 years to nursery. This seedling technology, due to not set up shade, anti-frost