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在我省西山地区油松造林往往成活率不高,其原因之一,就是因为经过长距离的运输,苗根裸露时间长,使苗木失水较多。地处黄河沿岸的永和县,气候干旱,油松造林成活率一般仅50%。1985年春季,我们在该县试用塑料袋装油松苗进行造林,运距达20公里,取得了很好的护苗效果。具体做法是:先依据苗龄和苗木大小,制成规格不等的塑料袋(见表)待用。起苗时要带一部分宿土并迅速装入袋内(每袋装200株),苗木地上部分露出袋外,袋内注
In our province Xishan pine afforestation often survival rate is not high, one of the reasons is because after long-distance transport, seedling roots exposed a long time, so that seedlings dehydration more. Located in the Yonghe County along the Yellow River, the weather is arid and the survival rate of Pinus tabulaeformis forest is only 50%. In the spring of 1985, we piloted plastic bagged pine seedlings in this county for afforestation, with a shipping distance of up to 20 kilometers and good seedling protection effect. Specific approach is: first based on seedling age and seedling size, made of plastic bags ranging in size (see table) stand-by. When starting to take part with the local soil and quickly into the bag (200 bags per bag), seedlings above the ground exposed outside the bag, note the bag