浙江楠容器育苗基质的比较和筛选

Comparison and selection on the substrate of container nursery of Phoebe chekiangensis

用泥炭、珍珠岩、蛭石、稻壳和阔叶树木片按不同体积比配成18种基质,以园土为对照,研究了不同基质对1年生浙江楠(Phoebe chekiangensisC.B.Shang)实生苗生长及生理特性的影响并筛选出适宜的浙江楠容器育苗基质。结果表明,以体积比5∶3∶2的泥炭、蛭石和阔叶树木片为基质培育的浙江楠幼苗的株高、地径、径根比、地上部干质量和鲜质量、根系干质量和鲜质量、根系活力以及叶片可溶性糖和可溶性蛋白质含量等指标均显著高于对照。该基质的持水性和保水性较好,持水量达608.64 g.L-1,可作为浙江楠容器育苗的适宜基质进行推广应用。

The eighteen kinds of substrates were prepared by peat, perlite, vermiculite, rice husk and scraps of broad-leaved wood with different volume ratio, the effects of these substrates on the growth indexes and physiological characteristics of one-year old seedlings of Phoebe chekiangensis C. B. Shang were investigated using the garden soil as a control, and the optimal substrate was chosen. The results show that the height, ground diameter, ratio of ground diameter to main root length, fresh and dry weights of above-ground part, fresh and dry weights of root, root vigour and contents of soluble sugar and soluble protein in leaf of P. chekiangensis seedlings cultivated in the substrate with peat-vermiculitescraps of broad-leaved wood （ volume ratio 5： 3： 2） are obviously higher than that in the control. Besides, the water holding capacity and the water-retaining property of this substrate are better and the water holding capacity reaches to 608.64 g · L^-1. Therefore, this substrate can be popularized and applied as an optimal substrate for container nursery of P. chekiangensis.