Korean Journal of Soil Science and Fertilizer (한국토양비료학회지)
- Volume 10 Issue 4
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- Pages.211-217
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- 1978
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- 0367-6315(pISSN)
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- 2288-2162(eISSN)
A study on composition of Inorganic Phosphours Forms and Comparison of Methods of Determining Available Phosphorus in Upland Soils
전토양(田土壤) 무기태인산(無機態燐酸)의 조성(組成)과 유효인산 분석방법(分析方法)에 관(關)한 비교연구(比較硏究)
- Ryu, In-Soo (Wheat and Barley Research Institute, O.R.D.) ;
- Shin, Cheol-Woo (Institute of Agricultural Sciences, O.R.D.) ;
- Yoon, Jung-Hui (Institute of Agricultural Sciences, O.R.D.) ;
- Yoo, Soon-Ho (Agricultural College, Seoul Natienal University)
- Published : 1978.05.18
Abstract
Laboratory experiment was conducted to investigate the changes in the amount of inorganic phosphorus forms in soils incubated by preaddition of two kinds of phosphorus fertilizer and to various methods of available soil P. The results are summarized as following. 1. The content of Al-P form was higher in cultivated upland soil than in noncultivated soil and that of Fe-P was higher in clayey soil than in sandy soil. 2. The amount of Al-P was increased greatly by addition of Triple superphosphate and Al-P and Ca-P were increased by addition of Fused phosphate but only a little amount of Fe-P was increased by both two fertilizers. 3. The magnitute of available soil P values of different methods was in order of Bray No. 2-P>Lancaster-P
수종토양(數種土壤)에 2종(種)의 인산질비료(燐酸質肥料)를 시용(施用)한 후(後) 토양중(土壤中) 무기태인산(無機態燐酸)의 형태별(形態別) 함량변화(含量變化)와 수종침출액(數種浸出液)에 의한 유효인산침출량(有效燐酸浸出量)을 실내실험(室內實驗)으로 조사(調査)하여 비교(比較) 검토(檢討)한바 얻어진 결과(結果)는 다음과 같다. 1. Al-P 함량(含量)은 미경지(未耕地)에 비(比)해 기경전(旣耕田) 토양(土壤)에서 많고 Fe-P 함량(含量)은 사질(砂質)에 비(比)해 식질토양(埴質土壤)에서 많았다. 2. 시용(施用)된 중과석(重過石)의 인산(燐酸)은 토양중(土壤中)에서 주로 Al-P로, 용성인비(熔成燐肥)의 인산(燐酸)은 Al-P와 Ca-P로 변화(變化) 되었으며 Fe-P의 증가(增加)는 모두 아주 낮았다. 3. 유효 인산(燐酸)의 용출량(溶出量)은 침출액간(浸出液間)에 차이가 컸으며 대체(大體)로 중과석(重過石)을 시용(施用)한 토양(土壤)에서는 Bray No. 2>Lancaster
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