호밀이 투입된 오이 시설재배지에서 수량과 토양용액의 질산태질소과의 관계

Abstract

This study was conducted to estimate the effect of nitrogen reduction by applying ryegrass and to determine the relationship between yield and nitrate concentration of soil solution for cucumber cultivation in plastic film house. Nitrogen levels with recovery of ryegrass () was 0, 50, 75, 100 % of 199 kg N as N recommendation by determining soil EC value. Yield and nitrate concentration in soil solution was investigated during cucumber cultivation. Yields of N treatments applied ryegrass showed 64.3, 70.9, 70.3, and , respectively, it could reduce about 25-50% of nitrogen application compared to yield () of NPK plot applied 199 kg N . Nitrate concentration in soil solution was average 26.0, 30.1, 41.4, during cucumber cultivation and was related between yield and average nitrate concentration of soil solution following as; (). However, it needs to conduct extra-experiment due to high variation of nitrate concentration during cultivation periods.