쉬나무의 용기묘 대량생산을 위한 적정 시비 수준 구명
Investigation of the Optimal Fertilization Level for the Mass Production of Container Seedling of Tetradium daniellii (Benn.) T. G. Hartley
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본 연구는 대체에너지, 생태복원 및 밀원식물용 등으로 이용되어 묘목 수요가 증가되고 있는 쉬나무의 우량한 용기묘 생산을 위한 적정 시비수준을 구명하고자 실시하였다. 공시용기는 임업시설양묘용 플라스틱 용기(350 ㎖/구)를 사용하였다. 시비처리는 무시비구와 함께 수용성 복합비료인 Multifeed 19 (N:P:K=19:19:19, v/v)를 500 ㎎·L-1, 1000 ㎎·L-1, 1500 ㎎·L-1, 2000 ㎎·L-1로 조절하여 시비하였다. 실험결과, 간장과 근원경 생장은 시비수준이 높아짐에 따라 높은 생장값을 나타내다가 1000 ㎎·L-1 이상의 시비에서는 낮아지는 경향을 보였다. 뿌리발달은 1000 ㎎·L-1에서 가장 왕성하였다. 건물생산량도1000 ㎎·L-1에서 가장 높았고 전체적으로 간장 및 근원경 생장 결과와 유사한 경향으로 나타났다. 묘목의 품질을 나타내는 지수인 QI (Quality Index)도 1000 ㎎·L-1에서 0.97로 다른 처리구 보다 높게 조사되었다. 연구결과를 종합하면, 쉬나무 용기묘의 우량한 묘목생산을 위한 적정 시비수준은 1000 ㎎·L-1로판단되며, 쉬나무 용기묘의 대량생산을 위한 기초자료로 활용될 것으로 기대된다.
Abstract
This study was conducted in order to closely examine about optimum fertilization for superior seedling producion a container seedling of Tetradium daniellii, which is being increased the demand for a seedling due to being used for alternative energy, ecological restoration and honey plant. The experiment of investigating the optimum fertilization on T. daniellii 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 500 ㎎·L-1, 1000 mg·L-1, 1500 mg·L-1, 2000 mg·L-1, together with non-fertilization plot. As a result, height and root collar diameter growth showed higher growth value as fertilization level increased, but decreased when fertilization above 1000 mg·L-1. Root development was the highest in 1000 mg·L-1. Dry matter production, it was investigated to be the highest in 1000 mg·L-1. It was surveyed to be the similar tendency to the outcome of height and root collar diameter growth. QI, which is index of showing the quality of a seedling, stood at 0.97 in 1000 mg·L-1, thereby having been surveyed to be higher than other treatment plots. As a result of surveying the whole experiment, optimum fertilization for superior seedling producion a container seedling of T. daniellii is determined at 1000 mg·L-1. It is expected that this will be used as a basic data for mass production.
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