칼슘제(7) - 염화칼슘, 질산칼슘, 인산칼슘, 초산칼슘의 용도 차이(수정 후 재업로드)

현해남 교수의 흙과 비료 이야기 September 1, 2020
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현해남 교수의 흙과 비료 이야기

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[염화칼슘, 질산칼슘, 인산칼슘, 초산칼슘 용도]에 대해 설명한 것임. 1) 칼슘이 함유된 비료가 많은데, 칼슘함량은 수산화칼슘(소석회), 탄산칼슘(난각, 패화석 등)이 칼슘함량이 높으나 물에는 잘 녹지 않음. 2) 따라서 인산칼슘, 수산화칼슘, 탄산칼슘 등은 현미식초, 염산 등으로 용해시켜야 사용할 수 있어서 불편함. 3) 염화칼슘은 물에도 잘 녹고 잎, 과피로 흡수되는 양이 가장 많아 칼슘제로 효과가 가장 큼. 4) 초산칼슘은 염화칼슘에 비해 흡수율이 15~20% 낮지만 유기농에는 초산칼슘만 사용할 수 있음. 5) 인산칼슘은 인산을 시비하는 것이 주목적이며, 칼슘은 부수적인 성분이며, 물에도 잘 녹지 않고 가격도 비쌈. 따라서 칼슘제로 사용하는 것은 부적절함. 6) 질산칼슘은 물에도 잘 녹고 칼슘이 질소보다 2배 정도 높으나 질소가 빨리 흡수되어 비대기에 사용하면 과일은 잘 크지만 약해지는 단점이 있어서 칼슘제 용도로 사용하는 것은 주의해야 함. 따라서 여러 칼슘이 함유된 비료를 엽면시비용으로 사용할 때는 물에 녹는 용해도, 흡수율, 용도 등을 잘 생각하여 선택해야 함. #칼슘제 #염화칼슘 #질산칼슘 #인산칼슘 #초산칼슘 #난각칼슘 #패화석 #칼슘제효과 #칼슘용해도 #현해남 #흙 #토양 #비료 #거름 #흙과비료이야기

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