[논문]인광석 처리 토양에서 담배의 인산 흡수와 생육에 미치는 인산 가용화균의 효과

박명수; 석영선; 정종배; 안기섭; 사동민

[국내논문] 인광석 처리 토양에서 담배의 인산 흡수와 생육에 미치는 인산 가용화균의 효과
Effect of Phosphate Solubilizing Fungi on P Uptake and Growth of Tabacco in Rock Phosphate Applied Soil 원문보기

韓國土壤肥料學會誌 = Korean journal of soil science & fertilizer, v.36 no.4, 2003년, pp.233 - 238

박명수 (충북대학교 농화학과) , (충북대학교 농화학과) , 석영선 (충북대학교 연초학과) , 정종배 (대구대학교 생명환경학부 농화학전공) , 안기섭 (천안외국어대학 환경시스템학과) , 사동민 (충북대학교 농화학과)

초록
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인광석을 처리한 토양에서 인산 가용화균 Penicillium oxalicum CBPS-3F-Tsa이 식물의 인산 흡수와 생육에 미치는 효과를 온실조건에서 조사하였다. 인광석을 처리한 토양에서 담배 식물체중의 인산 농도는 증가하였으며, 인산 가용화균을 접종한 경우에는 인산 농도가 더욱 증가하였다. 식물체의 총 인산 흡수량도 인산 가용화균을 접종한 경우 증가하였다. 담배 식물의 생육 또한 인광석과 인산 가용화균을 동시에 처리한 경우 인광석만 처리한 경우에 비하여 통계적으로 유의성 있게 증가하였는데, 이러한 인산 가용화균의 생육 촉진 효과는 인산 흡수에 미치는 영향과 밀접한 관계를 보였다. 따라서 인산 가용화균과 인광석 처리에서 나타난 식물의 인산 흡수량 및 생육 증대 효과는 결국 접종한 인산 가용화균에 의한 난용성 인광석의 가용화에 따른 결과로 판단된다.

Abstract ▼ AI-Helper

The effect of phosphate solubilizing microbes (PSM) on plant P uptake and growth in rock phosphate applied soil was tested under a greenhouse condition. Tobacco plants were grown in nonsterilized soil inoculated with Penicillium oxalicum CBPS-3F-Tsa with or without rock phosphate application as P fertilizer. Phosphorus concentration in tobacco plants was increased by the application of rock phosphate, while inoculation of soil with fungi further significantly increased P concentration in tobacco plants compared with the noninoculated treatments. Phosphorus uptake by tobacco plants was also increased by the application of rock phosphate and PSM inoculation, and the significant comparison has been made with single rock phosphate treatment. Growth of tobacco plant was also significantly increased in the treatments receiving rock phosphate, while the combined application of rock phosphate and PSM further increased plant growth. It was concluded that the positive effect of PSM inoculation on plant growth was closely related in plant P content and uptake. These results suggest that Penicillium oxalicum CBPS-3F-Tsa could solubilize insoluble soil phosphates and rock phosphate which can promote growth and P uptake of tobacco plants.

주제어

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문제 정의

The objective of the present work was to test the effects of P solubilizing fungi on P uptake and growth of tobacco plants in rock phosphate applied soil.

제안 방법

0) of the prepared PSM culture was applied in the soil around root system when tobacco seedlings were transplanted. Experiment was conducted under a greenhouse condition, and treatments were arranged in a randomized completed block design.
Tobacco leaves were harvested four times during the experiment; 11 June, 18 June, 24 June, and 2 July 2002. Leaf area and dry weight were measured at each harvesting time, and plant height, stem dry weight and girth were measured at the last harvesting time.

대상 데이터

Chinese phosphate rock ground (< 1 mm) was used and its total P content was 300 g P2O₅ kg1. Nitrogen, R and K were applied at the rate of 9.
Soil The soil used in this experiment was collected from the experimental farm of Chungbuk National University. Selected properties of the soil were presented in Table 1.
Tobacco (Nicotiana tabacum L., cv. NC-82) plant seedlings were grown in vermiculite seeding bed for six weeks and transplanted to pots containing 17 kg of soil on 18 April 2002. Twenty mL (log CFU = 7.

이론/모형

h. After digestion of the leaf and stem samples using H₂SO₄ and H₂O₂, P concentration was determined by the vanadomolybdate method using a spectrophotometer (Jackson, 1958).
Organic matter content was measured by Walkley-Black method (Nelson and Sommers, 1982). Available P was measured by Bray No.

성능/효과

plants over all treatments. The results of this study revealed that double application of rock phosphate and phosphate solubilizing fungi could improve availability of rock phosphate and insoluble soil phosphate.

참고문헌 (22)

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상세보기
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상세보기
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상세보기
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상세보기
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