Current Research on Agriculture and Life Sciences
- 제5권
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- Pages.59-67
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- 1987
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- 2287-271X(pISSN)
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- 2288-0356(eISSN)
낙동(洛東)벼의 토양중(土壤中) 유효인산(有效燐酸) 이용(利用)과 그 정량방법(定量方法)
Utilization and Quantitative Analysis Method of Available Phosphorus in Soils for Nak-Dong Rice
- Kim, Yong Joo (Dept. of Agricultural Chemistry, Coll. of Agric., Kyungpook Natl. Univ.) ;
- Kim, Jin Ho (Dept. of Agricultural Chemistry, Coll. of Agric., Kyungpook Natl. Univ.) ;
- Park, Woo Churl (Dept. of Agricultural Chemistry, Coll. of Agric., Kyungpook Natl. Univ.)
- 발행 : 1987.04.30
초록
토양중(土壤中) 유효인산(有效燐酸) 함량(含量)을 기준(基準)으로 하여 낙동(洛東)벼 재배(栽培)에 인산(燐酸) 시비량(施肥量)을 결정(決定)하고 낙동(洛東)벼 재배(栽培)에 이용(利用)할 수 있는 유효인산(有效燐酸) 정량방법(定量方法)을 알아보고자 상관계수(相關係數)를 조사(調査)하였다. 또 낙동(洛東)벼의 유효인산(有效燐酸) 이용(利用)과 인산시용(燐酸施用) 효과(效果)를 조사(調査)하기 위(爲)하여 토양중(土壤中) 유효인산(有效燐酸) 함량(含量)과 토양(土壤)의 물리화학적(物理化學的) 성질(性質)이 상이(相異)한 토양(土壤)을 공시(供試)하여 pot시험(試驗)한 결과(結果)는 다음과 같았다. 낙동(洛東)벼의 이앙(移秧) 후(後) 생육(生育)은 무인산구(無燐酸區)에 비(比)해 인산시용품(燐酸施用區)의 초기(初期) 생육(生育)이 촉진(促進)되었고, 분벽(分檗)이 증가(增加)했으며, 위 실험(實險)에 사용(使用)된 4지역(地域)의 토양(土壤)에서 토양(土壤)A는 인산시용량(燐酸施用量)이
The pot experiment was conducted using soils with varying contents of available phosphorus to select the reasonable method for determination of the available phosphorus content in soils for Nak-Dong rice cultivation. On a basis of the responses to the phosphorus tertilizer applied, the linear correlation coefficients by Bray No.1, Bray No.2, Lancaster, North Carolina and Olsen methods were 0.887, 0.868, 0.879, 0.952 and 0.911 for Nak-Dong rice yield, respectively. Of the methods tested, North Carolina method was the most suitable for determining, the phosphorus content in soils for Nak-Dong rice. The phosphorus application promoted the growth of Nak-Dong rice in pots for culm, tiller number, available stem and grain number per ear. Based on this experiment it could be presumed that the recommanded quantity of phosphorus fertilizer should attain to 5kg per 10a to promote the growth of Nak-Dong rice in A-soil and 10kg per 10a in B -, C - and D-soil. The results from the pot experiment will be somewhat different from those from the field experiment. Therefore, field experiment should be carried out for further information.
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