남은 음식물 퇴비 시용에 따른 토양의 이화학성 변화와 고추생육에 미치는 영향

Effect of the Application of Residual Food Compost on Growth of Red Pepper(Capsicum annuum L.) and Physicochemical Properties of soil

  • 유영석 (충남대학교 농업생명과학대학 농화학과) ;
  • 장기운 (충남대학교 농업생명과학대학 농화학과) ;
  • 이지환 (충남대학교 농업생명과학대학 농화학과)
  • Yu, Young-Seok (Dept of Agricultural Chemistry, College of Agriculture and Life Sciences, Chungnam National University) ;
  • Chang, Ki-Woon (Dept of Agricultural Chemistry, College of Agriculture and Life Sciences, Chungnam National University) ;
  • Lee, Ji-Whan (Dept of Agricultural Chemistry, College of Agriculture and Life Sciences, Chungnam National University)
  • 발행 : 2001.12.30

초록

본 연구는 유기성 폐자원의 효율적인 처리 방법의 일환인 퇴비화를 이용하여 생산된 남은 음식물 퇴비(이하 음식물 퇴비)를 고추 재배지에 시용량 별로 처리한 후 작물 생육과 토양의 이화학성 변화에 미치는 영항을 평가하기 위해 수행되었다. 처리구는 무처리구, 대조구($20Mgha^{-1}$의 돈분 퇴비), 음식물퇴비를 20, 40, 60, $80Mgha^{-1}$을 시용한 처리구 등 모두 6 개를 두었으며 3 반복, 난괴법을 이용하였다. 토양 pH는 음식물 퇴비의 시용량이 많을수록 상승하는 경향이 컸으며, 전기 전도도를 비롯한 다른 토양 특성도 비슷한 경향을 보였다. 또한 음식물 퇴비 시용량이 많을수록 용적비중은 낮아지고 공극율은 증가하는 상관관계를 보였다. 작물생육은 퇴비 시용량이 많은 처리구에서 초기 생육이 저조하였으며 1차 생육조사에서 그 차이를 뚜렷하게 확인할 수 있었다. 고추의 생중량은 초기 생육에서 저해를 받은 처리구에서 특히 적었으며 음식물 퇴비의 $20Mgha^{-1}$처리구는 대조구에 비해 낮았지만 큰 차이는 크지 않았다. 음식물 퇴비의 수용성 유기성분과 염류에 의한 초기 생육부진과 고추 수확량 감소를 감안한다면 시용량은 $30Mgha^{-1}$을 초과하지 말아야 할 것으로 판단된다. 음식물 퇴비를 연용 시험을 통해 작물 생육과 토양에 미치는 영향을 평가하여 음식물 퇴비의 시용량을 설정하는 것이 바람직할 것으로 생각된다.

This experiment was carried out to evaluate the effect of residual food compost application on plant growth and physicochemical properties of soil when residual food compost made from the composting process as part of organic waste recycling was applied in soil as variable rate. The treatments were composed non-fertilizer treatment, control treatment applied with pig compost $20Mg(D.W.)ha^{-1}$, and residual food compost treatments each of applied with 20, 40, 60, $80Mg(D.W.)ha^{-1}$ and were randomized complete block design with three replication. Soil pH after experiment was more increased as more increase application of residual food compost. Other chemical properties of soil including EC were also showed the similar results. The plant growth in treatments applied much of residual food compost at the early growth stage was very damaged and these results were proved at the first growth measurement. Production of the red pepper especially reduced in treatments taken growth demage at the early stage and that of $20Mgha^{-1}$ treatment almost same as control treatment. Bulk density was reduced but porosity was increased according to increase of residual food compost application. Considering the reduction of red pepper production and the demage of growth at the early stage by plenty of salt and water soluble application volume of residual food compost was not permitted over of $30Mgha^{-1}$. Additively, to settle the application volume of residual food compost and to evaluate the plant growth and changes of physicochemical properties of soil, the results taken from continual applying is concluded more important than single application.

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