무관수 용기형 벽면녹화에서 유기질 토양개량제가 토양수분함량과 홍자단의 생육에 미치는 영향

Abstract

In order to evaluate the effect of various organic soil conditioner ratios on the soil moisture content and growth of Cotoneaster horizontalis, a container type for wall-planting experiment was conducted in a greenhouse at Konkuk University under non-irrigation. The experimental planting grounds were prepared with different organic soil conditioner ratios (<TEX>$A_1L_0$</TEX>, <TEX>$A_8L_1$</TEX>, <TEX>$A_4L_1$</TEX> <TEX>$A_2L_1$</TEX> and <TEX>$A_1L_1$</TEX>), and a drought-tolerant ornamental variety of Cotoneaster horizontalis was planted. The change in soil moisture content, plant height, number of branches, number of dead leaves, number of leaves, number of shoots, length of node, length of leaf, width of leaf, root-collar caliper, chlorophyll content, and survival rate were investigated, from April to Jun 2010. The results of soil moisture content measurements were analyzed with weight units in the container type for wall-planting during the dry summer season. The soil moisture contents were significantly enhanced in the container type for wall-planting in increasing order as the amount of soil conditioner level was increased (<TEX>$A_1L_1$</TEX> > <TEX>$A_2L_1$</TEX> > <TEX>$A_4L_1$</TEX> > <TEX>$A_8L_1$</TEX> > <TEX>$A_1L_0$</TEX>). Compared to the control treatment application (amended soil with 100% + organic soil conditioner 0%), the highest plant growth was observed in the treatment of <TEX>$A_1L_1$</TEX> application (amended soil with 50% + organic soil conditioner 50%). However, the differences between the organic soil conditioner ratio treatments of <TEX>$A_1L_1$</TEX>, <TEX>$A_4L_1$</TEX>, and <TEX>$A_8L_1$</TEX> organic soil conditioner application were mostly not significant. The survival rate increased with the increasing application of organic soil conditioner, but in the control treatment application all the plants died. The experimental results from clearly demonstrated that the organic soil conditioner improved the survival rate more than the growth of Cotoneaster horizontalis. Therefore, Cotoneaster horizontalis is expected to be a highly valuable shrub for green wall systems, when considered for us in integration system or for increasing soil water contents in planting grounds.