Effects of Paper Sludge Application on the Chemical Properties of Paddy Soil and Growth of Paddy Rice;V. Effects of Paper Sludge Application on the Seasonal Variations of Higher Fatty Acids in Paddy Soil

제지(製紙)슬러지의 시용(施用)이 논 토양(土壤)의 화학성(化學性)과 수도생육(水稻生育)에 미치는 영향(影響);V. 슬러지시용(施用)이 토양중(土壤中) 고급지방산변화에 미치는 영향(影響)

  • Heo, Jong-Soo (College of Agriculture, Gyeongsang National University) ;
  • Kim, Kwang-Sik (College of Agriculture, Chonnam National University) ;
  • Ha, Ho-Sung (College of Agriculture, Gyeongsang National University)
  • Published : 1988.12.10

Abstract

To investigate the effects of paper sludge on the seasonal variations of higher fatty acids in paddy soil, paper sludge was applied to pots at the rate of either 300, 600, 900 or 1,200kg/10a. Fractions of the higher fatty acids in the soil were analyzed. 1. Twenty-one kinds of higher fatty acids in the soil were detected. Among them, lauric, myristic, myristoric, palmitic, palmitoleic, stearic, oleic, linoleic, linolenic and arachidic acids were identified. The fatty acid content in the soil of acids, linolonic, myristic, palmitic, and stearic acid increased in ascending order. 2. The total content of higher fatty acids in the soil was increased as the application of paper sludge increased. The formation of the acids was at its highest point at the effective tillering stage. After WARDS the contents of the acids decreased as time elapsed. A positive correlation was observed between the total contents of both higher and volatile lower fatty acids in the soil.

제지(製紙)슬러지가 논 토양(土壤)의 고급지방산변화(高級脂肪酸變化)에 미치는 영향(影響)을 검토(檢討)하기 위하여 슬러지의 시용량(施用量)을 300, 600, 900 및 1,200kg/10a으로 달리하여 pot 시험(試驗)을 실시(實施)함으로써 토양중(土壤中) 시기별(時期別) 고급지방산조성변화(高級脂肪酸組成變化)를 조사(調査)한 결과(結果)는 다음과 같다. 1. 토양중(土壤中) 고급지방산(高級脂肪酸)은 전시기(全時期)에 있어서 모든 처리구(處理區) 공(共)히 21종(種)이 검출(檢出)되었고 그 중 동정(同定)된 고급지방산(高級脂肪酸)은 lauric, myristic, myristoric, palmitic, palmitoleic, stearic, oleic, linoleic, linolenic 및 arachidic acids 의 10종(種)이었으며, 전반적(全般的)으로 stearic > palmitic > myristic > linoleic > oleic acid 순(順)으로 높았다. 2. 토양중(土壤中) 고급지방산함량(高級脂肪酸含量)은 제지(製紙)슬러지 시용량(施用量)이 많을수록 증가(增加)하였으며 유효분벽기(有效分蘗期)가 가장 높았고 그 이후부터는 시일(時日)이 경과할수록 모든 처리(處理) 공(共)히 감소(減少)하는 경향(傾向)이었다. 토양중(土壤中) 고급지방산(高級脂肪酸)과 휘발성저급(揮發性低級) 지방산함량간(脂肪酸含量間)에는 고도(高度)의 유의적(有意的)인 정(正)의 상관(相關)이 있었다.

Keywords