The Effect of Long-term Organic Matter Addition on the Physicochemical Properties of Paddy Soil

답토양(沓土壤)에서 퇴비연용(堆肥連用)이 토양(土壤)의 이화학적성질(理化學的性質)에 미치는 영향(影響)

  • Received : 1974.12.05
  • Published : 1975.03.20


In order to find out the effect of long-term annual additions of organic matter on the physico-chemical properties of paddy soil, the soil with and without compost application has been analysed. 1. There was no significant difference in the particle size distribution between compost and uncompost treatment, however, hydraulic conductivity, sedimention volume were remarkedly increased in compost. 2. Bulk density and soil strength were decreased in organic matter additions, but porosity increased. 3. Relative to Atterberg Limits, liquid limit, plastic limit, and elastic index were increased in compost. 4. Aggregate size distribution was slightly increased in additions of organic matter. 5. Regarding to chemical properties, pH, organic matter content, C.E.C. and extractable cation were increased in organic matter additions.