시설재배지에서 황산칼리 관비가 염류집적 및 원예작물에 미치는 영향

다국어 초록 (Multilingual Abstract)

Salt concentration in greenhouse soils is one of the major factors that determine yield and quality of vegetables. Many agricultural practices have attempted to reduce salt accumulation in soil. This study was conducted to determine the effect of fertigation with potassium salts on salt accumulation in the soil and on the yield and quality of vegetables grown in the greenhouse. Tomato and cucumber were grown in a greenhouse with application of urea+oitassium chloride, urea+potassium sulfate, urea+potas+sium nitrate, or ammonium nitrate+potassium sulfate by fertigation. Soil electrical conductivity for potas-sium sulfate treatment was less than that for potassium chloride. Nutrient contents in the leaves, stalk, and fruit of tomato and cucumber were not significantly different among treatments. Antioxidative activ-ity of tomato treated with potassium sulfate was greater than those that received potassium chloride.