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한국생태학회 / v.17, no.4, 1994년, pp.425-434 
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탄소, 질소, 인 및 살균제가 고도로 풍화된 토양의 인 흡착에 미치는 영향
( Effects of Carbon, Nitrogen, Phosphorus, and Biocides on Phosphorus Adsorption in Highly Weathered Soils ) |
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| 초 록 |
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| After two highly weathered soils were treated with glucose, ammonium nitrate, monobasic potassium phosphate and biocides, and incubated for 4 or 6 weeks, adsorption tests were carried out to determine their effect on P adsorption. Glucose addition generally decreased P adsorption. The addition stimulated microbial activity, which might contribure to the reduced adsorption, probably through chelation and anion competition. Consistent endency was not observed with N treatment. Addition of P initially decreased P adsorption, probably through blockage of adsorption sites. Biocides generally decreased adsorption, probably because the microbes that 몬 been killed. Soil 1 with naturally lower levels of C and higher levels of aluminium adsorbed more P than soil 2. These results suggest that in highly weathered soils, which are low in available P and high in exchangeable Al, cultivation techniques which increase soil organic matter will also result in higher levels of plant-available P. |
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| 키워드 |
| Adsorption;Chelation;Microbial activity;Organic matter;Phosphorus;Ultisol; |
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The Korean Journal of Ecology / v.17, no.4, 1994년, pp.425-434
한국생태학회
ISSN : 1225-0317
UCI : G100:I100-KOI(KISTI1.1003/JNL.JAKO199411919966405)
언어 : 한국어 |
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| 논문 제공 : KISTI 한국과학기술정보연구원 |
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