Horticultural Science & Technology (원예과학기술지)

Korean Society of Horticultural Science (한국원예학회)
권호 표지

Characteristics of Growth and Flowering by Nitrogen Levels in Sedum sarmentosum

질소 시비량에 따른 돌나물의 생육 및 개화 특성

Lee, Seung-Yeob;Ahn, Jeong-Ho;Kim, Hyo-Jin
이승엽;안정호;김효진

  • Published : 20040000
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Abstract

Sedum sarmentosum Bunge is one of the favorite fresh-vegetables during winter and spring seasons in Korea. To determine the optimum nitrogen fertilization for the production of high quality vegetable, S. sarmentosum was cultivated by cutting propagation in the pot (1/5,000a) and field experiments treated with different levels of nitrogen 0, 5, 10, 15, 20, 30 kg/10a and 0, 10, 15, 20, 25 kg/10a, respectively. In pot cultivation, plant height, number of stem, fresh weight and dry weigh were increased along with added nitrogen level, but they showed no significances in 15～30 kg/10a of nitrogen. SPAD value increased along with added nitrogen level, and it showed no significance in 10～30 kg/10a of nitrogen. The value of L measured by chromameter showed a tendency to decrease along with added nitrogen level. Number of flower stock in Keumsan local strain was decreased according to higher nitrogen level, and it was the highest in 10 kg/10a of nitrogen. Wanju local strain was not bloom in all treatments. In field cultivation, plant height and number of stem were increased with higher nitrogen level, but they were not significant except 0 kg/10a of nitrogen. Other characteristics in field cultivation showed no significances among nitrogen levels. Fresh weight and dry weight were linearly increased according to higher nitrogen level, they were not significant among 15～20 kg/10a of nitrogen levels. The nitrogen level for high quality and maximum growth of S. sarmentosum was 15 kg/10a. Keumsan local strain with abundant flower stock and branches was desirable as a garden plant, and Wanju local strain with higher yield and non-flowering characteristics was favorable as an edible cultivar.

돌나물은 우리나라의 유망한 신선채소로 겨울부터 봄철에 애용되고 있다. 고품질 돌나물 생산을 위한 적정 질소 시비량을 추정하기 위하여, 생육특성이 상이한 완주 및 금산지방종 돌나물을 재료로 와그너 포트(1/5,000a)와 포장에서 4월과 9월에 각각 삽목하여 질소시비량에 따른 생육 및 개화특성을 조사하였다. 초장, 줄기수, 생체중 및 건물중 등은 질소 시비량에 비례하여 증가하였으나, 15∼30kg/10a 간에는 큰 차이를 보이지 않았다. 엽록소 함량(SPAD)은 질소 시비량이 많을수록 증가하였으며, 엽색의 명도를 나타내는 L값은 낮아지는 경향을 보였다. 포장재배에서도 생체중 및 건물중은 질소 시비량에 따라 증가하였으며, 15kg/10a 이상에서는 큰 차이가 없었다. 완주 지방종은 모든 처리에서 개화하지 않았으며, 금산지방종의 개화는 10kg/10a 질소 시비구에서 가장 좋았으나, 질소 시비량이 적거나 과다시에는 화경수가 감소하는 경향이었다. 완주지방종은 봄철 개화하지 않는 특성이 있어, 주년생산이 가능한 특성을 가졌으며, 금산지방종은 화경 및 곁가지 발달이 양호하여 관상용으로 적합한 특성을 보였다. 돌나물의 적정 질소 시비량은 줄기의 도장이 심하지 않아 마디가 짧으며, 줄기수 및 엽수가 많고 생육이 양호한 15kg/10a으로 추정되었다.

Keywords

References

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