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近年来天气干旱、多风,在半阴、半阳坡,土壤质地差,含水量低的地方,采用人工窄缝植苗造林,成活率很低,多次补植也不易成功。若采用大苗带土丛植造林,成活率会大大提高,可达90％以上,效果很好。 一、苗木规格和起苗 1、苗木规格要求: 大苗丛植最好选用造林地附近的山地苗圃的3—4年生松苗,苗高40厘米、地径0.8厘米以上。起苗时选挨在一起的3—5株为一丛,尽量将健苗与弱苗选搭在一起,避
In recent years, the weather is arid and windy, with artificial narrow-gap planting and replanting in semi-cloudy, semi-sunny slopes, poor soil quality and low water content, the survival rate is very low and repeated replanting is not easy to succeed. If using large seedling with afforestation, the survival rate will be greatly improved, up to 90% or more, the effect is very good. First, the seedling specifications and seedlings 1, seedlings specifications: Seedlings planted the best selection of afforestation land near the mountain nursery 3-4 years pine seedlings, 40 cm high, more than 0.8 cm in diameter. When picked 3-5 from the seedling picked together for a cluster, try to choose the Jianmiao and weak seedlings together, to avoid