해가림 방향이 인삼의 생육 및 수량에 미치는 영향

Abstract

To analyze how the furrow directions made by the azimuth of 90o-270o (N 90o), 120o-300o (N 120o), and 0o-180o (N 180o) effect on the growth characteristics and yield of 2 and 3-year-old ginseng, both of N 90o and N 180o compared with N 120o recommended as the standard practices for ginseng cultivation. N 90o showed lower quantum and air temperature during forenoon, while it showed higher quantum and air temperature from 15:00 to 19:00 than that of N 120o. N 180o showed high quantum and air temperature due to the distinct increase of sunlight penetrated from 9:00 to 11:00, and which were similar to that of N 120o during afternoon. Stem length and leaf area in N 90o and N 180o, respectively, were decreased more than that of N 120o, and those in N 180o were decreased more distinctly than N 90o. Heat injury rate was decreased in N 90o, while it was increased distinctly in N 180o that showed high quantum and air temperature, and which showed great variation according to the year. Yield of N 180o was decreased more than that of N 120o in 2004, the year when it was a relatively high air temperature during summer season, but which was increased more than that of N 120o in 2005 showing a relatively low air temperature.