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利用塑料大棚进行白皮松营养袋容器育苗,具有出苗早,出苗整齐,成苗率高的特点。由于白皮松小苗出土阶段在棚内度过,可免遭鸟兽危害。五月份进入高温季节时,白皮松小苗已长出真叶,苗木基部已经木质化,具备了抗病、抗的能力。因此,与普通春播育苗比较,能明显地提高单位面积产量和苗木质量。一、建棚与营养土的配制 1、每年的三月上旬选择适宜的地块建好大棚。大棚宽8米、长15米,两端开门,顶部设有天窗以利通风。棚内要具备一定的控温设施。 2、采用表层土壤和腐熟有机肥、细沙,按1:1:3的比例混合均匀,用0.3%-0.5%高锰酸钾水溶液
The use of plastic shed white pine nutrition bag container seedling, with early emergence, emergence and tidy, high rate of seedling characteristics. Due to the stage of excavated white pine seedlings spent in the shed, from the dangers of birds and animals. May enter the hot season, white pine seedlings have grown real leaves, seedling base has been lignified, with the ability of disease resistance and resistance. Therefore, compared with ordinary spring sowing seedlings, can significantly improve yield per unit area and seedling quality. First, the establishment of shed and the preparation of nutrition soil 1, early March each year choose the appropriate land to build a greenhouse. Greenhouses 8 meters wide, 15 meters long, open at both ends, the top with skylight for ventilation. Shed to have a certain temperature control facilities. 2, using the surface soil and decomposed organic fertilizer, fine sand, according to the ratio of 1: 1: 3 mixed evenly with 0.3% -0.5% aqueous potassium permanganate