계분퇴비와 천연무기질 자재를 활용한 고랭지배추 비가림 유기재배 시 시용질소의 이용률과 배추의 생육
Growth of Chinese Cabbage and Nitrogen Availability Fertilizer in Organic Farming with Poultry Manure Compost and Natural Mineral Materials in Highland Rainshelter Cultivation
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Abstract
This study was carried out to evaluate nitrogen availability of applied fertilizer and to investigate yield and growth of Chinese cabbage as affected by amount of fertilizer and soil fertility in organic farming applied various fertilizers in rainshelter. The head weight of Chinese cabbage cultured in infertile soil (sand loam) with no amendments was very low. and that in fertile soil (clay loam) was higher than in infertile soil (sand loam). The head weight of Chinese cabbage as affected by amount of fertilizer was more variable in infertile soil (sand loam) than in fertile soil (clay loam). Nitrogen availability of applied fertilizer by Chinese cabbage was lower in fertile soil (clay loam) than in infertile soil (sand loam) and the lower that was, the more fertilizer applied. By application of poultry manure compost 20Mg ha-1 and natural mineral materials such as guano, phosphate rock, and potassium magnesium rock equal to amount of fertilizer recommended in conventional farming, the yield of Chinese cabbage in infertile soil (sand loam) with 1% organic matter came up to 90% of the yield in fertile soil (clay loam) with 6% organic matter. Therefore natural mineral materials such as guano for N source, phosphate rock for P source, and potassium magnesium rock for K source may be able to use as environmental-friendly fertilizers in organic Chinese cabbage production in highland.
참고문헌 (11)
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