乐东拟单性木兰容器大苗培育技术研究

Cultivation Technique for Container Saplings of Parakmeria lotungensis

研究了基质配比、基肥种类和施肥量、容器规格对3年生乐东拟单性木兰(Parakmeria lotungensis)容器大苗生长的影响,结果表明:乐东拟单性木兰容器大苗对不同基质配比的生长反应差异很大,以珍珠岩为主的配比基质容器苗生长表现最优,以沤制后谷壳为主的轻基质苗木生长较好;不同基肥种类及施肥量对容器苗生长影响显著,施用爱贝斯长效缓释肥(N:P:K=18:18:8)的容器苗生长表现最好;容器规格对乐东拟单性木兰容器苗生长影响显著,容器规格的增大可显著促进苗高和地径生长。从苗木质量和育苗成本等因素综合考虑,乐东拟单性木兰轻基质容器大苗优良培养方案为:基质配比(体积比)为泥炭:黄泥:谷壳=2:3:5,基质中施用3.0 kg/m3爱贝斯长效缓释肥,无纺布容器规格为D×H=30 cm×30 cm。

Experiments were conducted on effect of substrate composition,type and application quantity of base fertilizer,and container size on sapling growth of Parakmeria lotungensis.The result showed that container saplings in the media of perlite as main substrate had the best growth than that in decomposed hull.Container saplings applied with APEX slow release fertilizer（N：P：K=18：18：8）grew best.Significant effect of container size on the growth and development of P.lotungensis saplings was also observed.Larger container size could promote sapling height and root diameter growth.Based on sapling quality and cost,the optimal recommendation was substrate composition of peat： yellow soil： hull = 2：3：5,fertilizer of 3.0 kg/m3 of APEX slow release fertilizer（N：P：K=18：18：8）,container size of non-woven fabric of 30 cm × 30 cm.