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切干造林,就是把苗木的主干切掉,用带有短“根桩”的苗根进行造林.其好处是,能提高造林成活率.据各地试验,同一树种,切干造林比带干造林成活率提高10%～30%.因为切干后苗木水分蒸腾减少,并可避免因风吹苗木发生摇摆造成根系损伤.同时,切干有利于培养通直的树干.此外,灌木树种切干后,切口附近的创伤激素可刺激休眠芽萌动,形成密集的灌丛.
Cut dry afforestation, is to cut off the trunk of the seedlings, with a short “root pile” of seedlings for afforestation.The advantage is that can improve the survival rate of afforestation.According to the test, the same species, cutting and afforestation ratio with dry alder survival rate Increased by 10% to 30% .When the seedlings moisture transpiration after cutting to reduce, and to avoid wind and seedling swinging caused by root damage, while cutting is conducive to the cultivation of straight through the trunk.In addition, the shrub species cut, the incision wound Hormones can stimulate dormant buds to germinate and form dense shrubs.