不同基质及缓释肥对南方红豆杉容器大苗生长的影响

摘要

Experiments were conducted on three-year containerT. chinensis var.maireisapling cultivation with treatments of four different substrates and four fertilizers. The results showed that treatment of peat: vermiculite = 2:1 and yellow soil: peat: vermiculite = 2:2:1 promoted significantly growth ofT. chinensis var.mairei saplings. The latter treatment was recommended for good growth and lower cost. The growth ofT. chinensis var. mairei saplings was better with APEX slow-release fertilizer (SRF)(N:P:K=l8:6:12) than that with compound fertilizer N:P:K=15:15:15 (Control). But there was no significant effect on the growth among different quantity of slow-release fertilizer. The experiment resulted that growth ofT. chinensis var.mairei saplings was the largest with SRF of 1.5 kg/m3.%2014年6月，通过4种不同基质配比及4种施肥处理方式对3年生南方红豆杉（Taxus chinensis var.mairei）开展容器大苗培育试验。2015年测定结果表明：泥炭︰蛭石=2︰1及黄心土︰泥炭︰蛭石=2︰2︰1处理均显著促进了南方红豆杉容器大苗的生长，但综合成本等因素，增加了40%黄心土的 A2处理为南方红豆杉容器大苗的适宜育苗基质；所有施缓释肥（N︰P︰K=18︰6︰12）处理的南方红豆杉容器苗长势均显著高于施用复合肥的对照组（复合肥 N︰P︰K=15︰15︰15），但在不同缓释肥处理间，南方红豆杉的生长没有显著差异，其中以 SRF1处理（1.5 kg/m3）的苗木表现最优。