바다부유물질로 만든 퇴비를 시용한 토양에서 발생한 딸기의 질소결핍증 해결 사례연구

국문 초록 (Abstract)

pH가 높은 바다부유물질로 만든 퇴비를 시용한 토양은 암모니아 휘산이 야기되어 토양 중 질산태 질소함량이 낮고, 딸기는 질소를 흡수하지 못하여 생육이상증상이 유발되었다. 이 토양의 pH를 질산을 처리하여 낮추어 주고 부족한 질소와 인산 및 칼륨을 공급한 결과 회복되었다. 이 결과로부터 pH가 높은 토양에서 발생하는 질소결핍증은 토양의 pH를 낮추어 주어야 회복시킬 수 있다고 판단되었다.

다국어 초록 (Multilingual Abstract)

Nitrogen content in soil is a major factor for the crop growth. Ammonium nitrogen in soils is volatilized when soil pH is high. The growth and development problem of strawberry such as color of leaves turning into purple was found when soils were treated with the compost prepared from suspended solids of high pH from the sea. From in-situ analysis it was found that soil pH was 8.33 and nitrate, phosphorous, and potassium contents were relatively low. Nitric acid was added to adjust pH of irrigating water as 1.7, 1.9, and 2.3, then KNO3 0.25 g L<SUP>-1</SUP>and KH2PO4 0.25 g L<SUP>-1</SUP> were added. It was resulted that soils with pH 1.7 produced the most developed strawberries. Strawberry was recovered by irrigation containing the same solution. From the results, the growth and development problem of the strawberry resulted from low nitrate absorption rate. It was concluded that the growth and development of strawberries were recovered by the reduced soil pH using nitric acid.

목차 (Table of Contents)

• 서언
• 재료 및 방법
• 결과 및 고찰
• 요약
• 인용문헌

참고문헌 (Reference)

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2 김유학, "비료와 퇴구비를 처리한 토양과 시설재배지 토양에서 토양의 EC에 따른 pH변화" 한국토양비료학회 38 (38): 247-252, 2005

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4 ISO, "Soil quality Determination of redox potential field method. International organization for standardization"

5 ISO, "Soil quality Determination of pH. International organization for standardization"

6 NIAST, "Methods of soil chemical analysis" National Institute of Agricultural Science and Technology 2000

7 RDA, "Methods of artificial soil analysis" National Institute of Agricultural Science and Technology 2002

8 Hargrove, W.L, "Effect of organic matter on exchangeable aluminium and plant growth in acid soils" ASA special publication 151-166, 1981

9 Chapman, H.D, "Diagnostic criteria for plants and soils" University of California 310-323, 1966

10 Lindsay, W.L, "Chemicl equilibria in soils" John Wiley & Sons 268-280, 1979

11 Jackson, M.L, "Aluminium bonding in soils,In A unifying principle in soil science" 27 (27): 1-10, 1963