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香榧容器苗培育技术研究

Techniques for Container Seedling Cultivation of Torreya grandis ‘Xifei’

  • 摘要: 以黄心土、废菌棒和泥炭按不同比例混合作基质,以无纺布袋和塑料育苗杯为容器,并加入一定量的缓释肥,用2 年生榧树Torreya grandis 实生苗作砧木嫁接细榧Torreya grandis‘Xifei’穗条后再培育1 a 的小苗为材料,设置基质配方、 缓释肥用量、容器种类及摆放方式3 因素各3 水平对其进行培育试验。结果表明,香榧苗木培育时采用无纺布容器袋比塑料 杯容器袋时成活率高36.0%。苗木新梢长度受3 个因素的影响中,以容器种类及摆放方式的影响最大,其次是基质配比,再 次是缓释肥用量,但都没有达到显著水平;而基径的生长受容器种类及摆放方式的影响也是最大,其次是缓释肥用量,再次 是基质配比,3 因素对苗木地径生长的影响都达到显著水平(P<0.05)。所育苗木综合质量评价以基质配比黄心土:废菌棒: 泥炭为2:1:1、无纺布容器袋高位摆放、缓释肥用量30 g·株-1 为最佳方案。

     

    Abstract: Experiments were conducted on container seedling cultivation of Torreya grandis ‘Xifei’ in Songyang of Zhejiang province with different substrates, different containers and different quantity of slow release of fertilizer. 1-year seedlings were T. grandis ‘Xifei’ as scion grafted on 2-year T. grandis as stock. One year later, determinations demonstrated that survival rate of seedlings in non-woven bag was 36% higher than that in plastic cup. New shoot growth of seedlings was influenced by moisture content of soil>substrate>slow release fertilizer. Ground diameter increment of seedlings was significantly affected by moisture content of soil>slow release fertilizer>substrate. Comprehensive evaluation on seedling quality resulted that the best substrate was sub top soil: waste mushroom stick: peat = 2: 1: 1, with non-woven bag as container, and 30g slow release fertilizer each seedling.

     

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