Korean Journal of Soil Science and Fertilizer (한국토양비료학회지)

Korean Society of Soil Science and Fertilizer (한국토양비료학회)
권호 표지

Effects of Composted Pig Manure Application on Enzyme Activities and Microbial Biomass of Soil under Chinese Cabbage Cultivation

돈분퇴비의 시용이 토양의 미생물체량 및 효소활성에 미치는 영향

  • Weon, Hang-Yeon (National Institute of Agricultural Science and Technology, RDA) ;
  • Kwon, Jang-Sik (National Institute of Agricultural Science and Technology, RDA) ;
  • Shin, Yong-Kwang (National Institute of Agricultural Science and Technology, RDA) ;
  • Kim, Seung-Hwan (National Institute of Agricultural Science and Technology, RDA) ;
  • Suh, Jang-Sun (National Institute of Agricultural Science and Technology, RDA) ;
  • Choi, Woo-Young (College of Agriculture and Life Science, Chungnam National University)
  • Received : 2004.01.28
  • Accepted : 2004.02.27
  • Published : 2004.04.30
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Abstract

To elucidate the effects of composted pig manure on soil biochemical properties, composted pig manure was amended in a sandy loam soil and Chinese cabbage was grown. Composted pig manure treatments included 8, 29 and $57Mg\;ha^{-1}$ for CM-08, CM-29, and CM-57 plots, respectively. Biomass contents and enzymes activities in the non-rhizophere soil were measured. Activities of protease, phosphomonoesterase and dehydrogenase in the plot CM-57 increased to 2.3, 1.6, and 2.4 fold as compared with those of the control plot. Soil microbial biomass contents increased in proportion to the application rates of compost and biomass C, N, and P in the plot CM-59 were 4.3, 3.4, 2.8-fold higher than those of control p1ot(no fertilizer), respectively. During cultivation of Chinese cabbage, biomass C and N were higher in the middle growth stage, although biomass P was the highest in the early growth stage. The average ratio of biomass C:N:P was 11:2:1, and proportion of biomass C and N in the soil organic C and N was 1.1 and 3.6%, respectively. Activities of protease and dehydrogenase had significant correlations with biomass C and P.

가축분 퇴비가 토양의 생화학적 특성에 미치는 영향을 조사하고자, 농업과학기술원 시험포장에 시용량 ($8Mg\;ha^{-1}$, CM-8구: $29Mg\;ha^{-1}$, CM-29구: $57Mg\;ha^{-1}$, CM-57구)을 달리하여 돈분퇴비를 시비하고 봄배추를 재배하면서 생육시기별로 토양을 채취하여 biomass, 효소활성도의 변화를 조사하였으며, 그 결과를 요약하면 다음과 같다. 토양효소 활성은 NPK구의 경우 대조구에 비하여 낮았으나 퇴비구에서는 증가하여 CM-57구에서 protease, Phosphomonoesterase 그리고 dehydrogenase의 활성이 각각 2.3, 1.6 및 2.4배 증가하였다. Protease와 phosphomonoesterase의 경우 재배기간중 모든 처리구에서 생육중기에 가장 높은 활성을 나타내었다. Biomass는 퇴비의 시용랑에 따라 증가하여 biomass C의 함량은 CM-57구에서 $466mg\;kg^{-1}$으로 대조구에 비하여 4.3배, biomass N과 P는 각각 3.4배, 2.8배 증가하였다. 한편 NPK구에서는 biomass C와 N은 증가하였으나 biomass P는 낮았다. 퇴비구에 있어서 biomass N과 P는 배추의 생육중기에 최고치에 달하였으나 biomass C의 함량은 생육초기에 증가하여 수확기까지도 높은 함량을 유지하였다. 평균 biomass C:N:P 비율은 11:2:1이었으며, 토양의 유기 탄소 및 질소함량에 대한 biomass C와 N의 비율은 각각 1.1 및 3.6%이었다. 재배토양의 protease와 dehydrogenase는 biomass C 및 P와 고도로 유의한 상관관계를 나타내었다.

Keywords

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