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采用L9(34)正交设计分别在温棚内外开展云南松苗木培育中水分控制的试验。结果表明,温棚内外促进地径生长的分别是每1天浇水1次,每次浇1/4饱和含水量和每3天浇水1次,每次浇1/4饱和含水量;每3天浇水1次,每次浇1/2饱和含水量和每1天浇水1次,每次浇1/2饱和含水量则促进温棚内外苗高和绿冠的生长。温棚内的平均苗高和绿冠极显著地大于温棚外的(4.08 cm、3.19 cm;2.47 cm、1.37 cm)。良好的水分能促进云南松苗高生长,反之,水分亏缺,优先保证苗木地径的生长,揭示了水分限制是导致云南松蹲苗的重要因素。
The orthogonal experiment of L9 (34) was used to test the moisture control in the cultivation of Pinus yunnanensis seedlings inside and outside the greenhouse. The results showed that the growth of ground diameter both inside and outside the greenhouse were watered 1 time per day, each time 1/4 saturated watering and watering once every 3 days, each time 1/4 saturated water content; each Watering 3 times a day, each time 1/2 saturated water content and watering 1 times a day, each time 1/2 saturated water content to promote the greenhouse inside and outside the seedling height and green crown growth. The average height and green crown in the greenhouse were significantly larger than those outside the greenhouse (4.08 cm, 3.19 cm; 2.47 cm, 1.37 cm). Good water can promote Yunnan pine seedling height growth, on the contrary, water deficit, give priority to ensuring the growth of seedling diameter, revealing the water limitation is an important factor leading to the Dunhua seedlings.