왕고들빼기"선향"재식거리가 생육과 수량에 미치는 영향 = Effects of Planting Distances on the Growth and Yield of Lactuca indica L. "Seonhyang"

국문 초록 (Abstract)

재식거리별 생육은 30×25 cm에서 식재구에서 1차 수확시 엽장 27.8 cm, 엽폭 8.6 cm, 경경 14.8 mm, 엽록소함량 47.4 SPAD, 주당 수량 236.1 g/주로 가장 좋았으며, 3차에 걸친 총 주당 수량도 410.7 g/주로 가장 좋았으나 10 a당 수량은 3,833 kg/10 a로 다소 낮았다. 반면에, 10×10 cm 재식구에서는 엽장 26.7 cm, 엽폭 6.6 cm, 경경 9.3 mm, 엽록소함량 34.7 SPAD, 주당 수량 66.6 g/주로 30×25 cm 재식구에 비해 1/4 밖에 되지 않았지만, 10 a당총 수량은 7,910 kg/10 a로 30×25 cm 재식구의 2배가 수확되었다. 10×10 cm 재식구에서 주당 생육은 30×25 cm 재식구에 비해 다소 저조 하였으나, 줄기를 같이 활용할 수 있는 장아찌나 김치 등 가공으로 이용하기에는 품질이 좋아 단위면적당 수량을 높일 수 있었다. 수확횟수별 수량은 1차 수확시 4,662 kg/10 a, 2차 수확시 2,520 kg/10 a, 3차 수확시 728 kg/10 a로 수확횟수가 늘어나면서 수량이 줄어들고 3차 수확시 개화기와 겹쳐 수량이 급격히 줄어들었다. 또한, 생육후기에는 밀식재배의 경우 흰 가루병 발생율이 높아지는 경향을 보였다.

다국어 초록 (Multilingual Abstract)

Lactuca indica L., annual and biennial plant in Compositae, grows wildly in Korea. It is used variously of vegetable for wrapped rice or meat, cooked greens, kimchi and pickle. In Korean medicine, it effects strengthening of stomach, sedation, urination, sweating and so on. It has a bright future as health food. Therefore, we researched the growth and yield according to the different planting distances of Lactuca indica L. ``Seonhyang``. Seeds were sown in 105 cells tray-pot on 4th March 2013 in greenhouse and raised for 45 days. Seedlings were planted 10×10-30×40 cm (9 degrees) distances on 2nd May in the field contained compost 2 ton and N:P:K=14:10:9 kg/10 a. We harvested stems with leaves in about 1 cm diameter, 25 cm length. The first harvest was 20th June, the second was 20th July and the third was 19th August. The growth and yield per plant were best in first harvest of 30×25 cm planting distance (leaf length 27.8 cm, leaf width 8.6 cm, stem width 14.8 mm, chlorophyll SPAD 47.4, yield 236.1 g/plant) and total yield was 3,833 kg/10 a. In 10×10 cm, leaf length 26.7 cm, leaf width 6.6 cm, stem width 9.3 mm, chlorophyll SPAD 34.7 and yield 66.6 g/plant were low. But the total yield was 7,910 kg/10 a and it was twice compared with 30×25 cm. It was good for making pickle and kimchi because stem slimmed in 10×10 cm. The yields decreased according to harvesting time (4,662 kg/10 a in 1st, 2,520 kg/10 a in 2nd and, 728 kg/10 a in 3rd).