재배지대와 유형이 꽃향유의 생육 및 개화 특성에 미치는 영향

Effects of Different Altitudes and Cultivation Methods on Growth and Flowering Characteristics of Elsholtzia splendens

본 연구는 꽃향유(Elsholtzia splendens)의 재배지대(평야지, 중산간지)와 유형(노지, 비가림하우스 재배)에 따른 생육 및개화 특성에 대해 구명하고자 수행하였다. 평야지와 중산간지는 각각 해발고도 12 m, 500 m에 위치한 시험포장을 선정하였으며, 재배지대와 유형별 재배관리는 동일한 방법을 적용하였다. 중산간지에서는 평야지 대비 화뢰 출현기(2~3일), 개화기(9일), 만개기(6~7일)가 빨랐으며, 재배유형 중 노지 재배에서비가림하우스 재배보다 빠른 편이었다. 초장, 주경, 분지수는정식 후 59~69일까지 급격히 증가한 후 완만해지는 경향을 보였다. 특히 장마기(6월 20일)부터 영양생장의 증가가 완만해지는 시기(정식 후 59~69일)까지의 일조시간(8시간 미만) 일수는평야지와 중산간지가 각각 22~29일, 26~35일로 조사되었으며, 해당시기는 영양생장에서 생식생장으로 전환되는 시기인것으로 추정되었다. 재배지대별 꽃향유의 화서 생장량은 평야지보다 중산간지에서 많은 경향이었고, 생육 특성은 주경, 분지수, 건물률을 제외하고는 통계적인 차이가 없었다. 또한 노지재배 대비 비가림하우스 재배에서 개화량과 생장량이 많은 경향이었다. 결과적으로, 경관 목적의 꽃향유 재배 시 일부 개화량 차이는 인정되나 평야지와 중산간지 재배가 모두 가능할 것으로 판단된다. 이와 같은 결과는 꽃향유의 기상특성과 생육간의 관계를 이해하기 위한 기본적인 재배정보를 제공할 수 있을것이다.

This study was conducted to find the flowering and growth characteristics according to the different altitudes (plains and mid-mountain regions) and cultivation methods (field and plastic houses cultivation) of Elsholtzia splendens. Experimental regions located at 12 meters and 500 meters above sea level were selected for the plains and the mid-mountain, respectively, and the same method was applied for cultivation management by different altitudes and cultivation methods. In the mid-mountain region, flower bud emergence (2-3 days), flowering (9 days), and full bloom (6-7 days) stages of Elsholtzia splendens were earlier than in the plains, and field cultivation was earlier than plastic house cultivation. The plant height, the main stem diameter, and the number of branches tended to increase gradually after an initial rapid growth at 59 to 69 days after planting date. The days of duration of sunshine (less than 8 hours) from the rainy season (June 20) to the period when vegetative growth increases gradually (59 to 69 days after planting) was 22 to 29 days and 26 to 35 days in the plains and the mid-mountain regions respectively, and this period was estimated time of transition from vegetative growth to reproductive growth. The spikes growth of Elsholtzia splendens by cultivation altitudes was higher in the mid-mountain region than in the plains, and there were no statistically significant differences in growth characteristics except for the main stem diameter, the number of branches, and the dry matter. Also, the amount of flowering and growth was higher in the plastic house cultivation compared to the field cultivation. As a result, some differences in flowering amount were observed when cultivating Elsholtzia splendens for landscaping purposes, but it was considered possible to cultivate in both plains and mid-mountain regions. This study therefore provides ecological information for understanding the relationship between weather characteristics and growth of Elsholtzia splendens.