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培育树苗,几千年来都是露天栽培,生长缓慢,劳动强度大。随着现代科学技术的发展,种树要求集约经营,要工厂化、机械化。近两年来,我们采用营养液搞了无土培育油松苗的试验,收到了良好效果。油松播种后199天,苗高23厘米,基径0.3厘米,为田间最高苗(播种苗207天,苗高10厘米)的2.3倍。现将试验方法简介如下: 一、用硬聚氯乙稀箱,规格为50×30×15厘米,每箱育苗面积为0.15平方厘米。箱底铺2-3厘米卵石和9-10厘米的锯末(均经水洗,未经消毒)。二、营养液,我们是采用改良的Addoms的营养液,配方见下表:
Nurturing saplings, open-air cultivation for thousands of years, slow growth, labor-intensive. With the development of modern science and technology, planting trees requires intensive management, industrialization and mechanization. In the past two years, we have experimented with hydroponics to cultivate Pinus tabulaeformis soillessly and received good results. 199 days after sowing Pinus tabulaeformis, seedling height of 23 cm, the base diameter of 0.3 cm, the highest field seedlings (sowing 207 days, 10 cm high) 2.3 times. Now the test method is as follows: First, with hard PVC containers, specifications for the 50 × 30 × 15 cm, nursery area of 0.15 cm 2 per case. Shop at the end of 2-3 cm pebbles and 9-10 cm sawdust (all washed, without disinfection). Second, nutrient solution, we are using a modified Addoms nutrient solution, the formula in the table below: