가시나무 용기묘 생산을 위한 적정 시비 수준 구명
Investigation of the Optimal Fertilization Level for Production of Container Seedling of Quercus myrsinaefolia
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본 연구는 우리나라의 대표적인 난대 상록활엽수종 중의 하나인 가시나무의 고품질 용기묘 생산을 위한 적정 시비수준을 구명하고자 실시하였다. 용기는 임업시설양묘용 플라스틱 용기(350 ㎖/구)를 사용하였고, 시비처리는 무시비구와 함께 수용성 복합비료인 Multifeed 19 (N:P:K =19:19:19, v/v)를 1000 ㎎․L-1, 2000 ㎎․L-1, 3000 ㎎․L-1로 조절하여 시비하였다. 실험결과, 수고와 근원경 생장은 시비수준이 높아짐에 따라 높은 생장값으로나타났다. 건물생산량도 전체적으로 수고 및 근원경 생장 결과와 유사한 경향으로 나타났다. 뿌리발달은 2000 ㎎․L-1 시비구에서 가장 왕성하였다. 묘목의 품질을 나타내는 지수인 QI (Quality Index)도 2000 ㎎․L-1 시비구에서 가장 높았다. 연구결과를 종합하면, 가시나무 용기묘의 우량한묘목생산을 위한 적정 시비수준은 2000 ㎎․L-1 시비구로 판단된다.
Abstract
This study was conducted in order to closely examine about optimum fertilization for production superior container seedling of Quercus myrsinaefolia, which is one of typical broad-leaved evergreen tree species in the warm temperate zone of Korean. The experiment of investigating the optimum fertilization on Q. myrsinaefolia was carried out by using plastic container types (350 ㎖/cavity) for the forestry facility cultivation. The fertilization level was made by modulating Multifeed 19 (N:P:K =19:19:19, v/v), which is water soluble compound fertilizer, to 1000 ㎎․L-1, 2000 ㎎․L-1, 3000 ㎎․L-1, together with non-fertilization plot. As a result, height and root collar diameter growth showed higher growth value as fertilization level increased. Dry matter production, It was surveyed to be the similar tendency to the outcome of height and root collar diameter growth. Root development was the highest in 2000 ㎎․L-1. QI, which is index of showing the quality of a seedling, stood at 0.393 in 2000 ㎎․L-1, thereby having been surveyed to be higher than other treatment plots. Based on the results of these experiments, optimum fertilization for superior seedling production a container seedling of Q. myrsinaefolia is determined at 2000 ㎎․L-1.
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