항온 호기 배양 조건에서 잔디 예초물 액비로부터 무기화된 질소의 농도 변화 (Variation Patterns in Concentration of Inorganic Nitrogen from Liquid Grass Fertilizer during Aerobic Incubation)

서지정보

· 발행기관 : 한국토양비료학회
· 수록지 정보 : 한국토양비료학회지(Korean Journal of Soil Science and Fertilizer) / 45권 / 6호 / 1120 ~ 1125페이지
· 저자명 : 이태규, 박지숙, 이민진, 김종성, 노희명, 김상준, 전승우, 서상국, 김길용, 이건형, 정병곤

초록

To assess fertilizer value of an quasi-aerobically fermented liquid clipped-grass fertilizer, aerobic incubation experiment using two texturally contrasting loam (L) and sandy loam (SL) soils was conducted for 60 days to investigate temporal variations in N mineralization pattern of the liquid fertilizer applied. To do so, the quasi-aerobically fermented liquid clipped-grass fertilizer was prepared, applied to each soil at a rate of 200kg-N ha-1 and aerobically 25oC in the dark. During incubation, soil water content was adjusted to field moisture capacity (-33 kPa of soil matric potential) by adding distilled water as necessary to maintain their initial weights. At desired time of incubation (0, 1, 5, 10, 20, 40, and 60 days after incubation), soil was sampled and analyzed for inorganic nitrogen (NH4+-N and NO3--N) concentrations, pH, EC, total carbon contents and total nitrogen contents. Concentrations of NH4+-N began to decrease right after incubation for L soils, and 10 days after incubation for SL soils, while those of NO3--N began to increase onset of NH4+-N disappearance. The results of this study showed that quasi-aerobically fermented liquid clipped-grass fertilizer could serve as an alternative to chemical N fertilizer.

영어초록

To assess fertilizer value of an quasi-aerobically fermented liquid clipped-grass fertilizer, aerobic incubation experiment using two texturally contrasting loam (L) and sandy loam (SL) soils was conducted for 60 days to investigate temporal variations in N mineralization pattern of the liquid fertilizer applied. To do so, the quasi-aerobically fermented liquid clipped-grass fertilizer was prepared, applied to each soil at a rate of 200kg-N ha-1 and aerobically 25oC in the dark. During incubation, soil water content was adjusted to field moisture capacity (-33 kPa of soil matric potential) by adding distilled water as necessary to maintain their initial weights. At desired time of incubation (0, 1, 5, 10, 20, 40, and 60 days after incubation), soil was sampled and analyzed for inorganic nitrogen (NH4+-N and NO3--N) concentrations, pH, EC, total carbon contents and total nitrogen contents. Concentrations of NH4+-N began to decrease right after incubation for L soils, and 10 days after incubation for SL soils, while those of NO3--N began to increase onset of NH4+-N disappearance. The results of this study showed that quasi-aerobically fermented liquid clipped-grass fertilizer could serve as an alternative to chemical N fertilizer.

참고자료

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