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Effects of Liquid Pig Manuare Application Method on the Chemical Properties of Paddy Soil and Growth of Paddy Rice

돈분액비 시용법이 논토양의 이화학적 특성과 벼 생육 및 수확량에 미치는 영향

  • 안창현 ((주)한국식물환경연구소) ;
  • 김우식 ((주)한국식물환경연구소) ;
  • 박지성 ((주)한국식물환경연구소) ;
  • 안인 ((사)한국친환경농자재협회)
  • Received : 2012.10.16
  • Accepted : 2012.12.06
  • Published : 2012.12.31

Abstract

We have researched the changes of paddy soil properties and rice yield by several different methods to treated with liquid pig manure(LPM). In the execution of this experiment, rice was cultivated to full maturity at a paddy field in Jeollabuk-do in 2011. Field experiment was designed with surface application on dry field condition+jet hose spray(Tr. 1), surface application on dry field condition+incorporation with irrigation water(Tr. 2), surface application on dry field condition+application device of fertilizer through irrigation(Tr. 3), submerged application on irrigated field condition+jet hose spray(Tr. 4), submerged application on irrigated field condition+incorporation with irrigation water(Tr. 5) and submerged application on irrigated field condition+application device of fertilizer through irrigation(Tr. 6) plot. Total N, P, K contents in used LPM were 0.44%, 0.07% and 0.14%, respectively. After the experiment, soil properties were not significant difference both several treated plots. But $NO_3$ and $NH_4$ contents at incorporation with irrigation water plots in paddy soil were higher than other plots. The yield was 602 kg $10a^{-1}$ in Tr. 2 plot compared Tr. 6 plot, which showed a value of 9.6% higher.

돈분액비의 시용법이 벼재배시 토양과 생육에 미치는 영향을 비교하고자 미사질양토 논에서 각각의 시용법에 따라 돈분액비를 논토양에 시용하여 토양의 이화학적 특성과 벼 생육 및 수량을 조사하였다. 사용된 돈분액비의 유효성분 함량은 질소 0.44%, 인산 0.07%, 가리 0.14%였으며, 벼 표준시비량에 준하여 10a당 6.8톤을 기비와 추비로 나누어 시비하였다. 액비 시비 후 토양의 이화학성은 처리구간에 큰 차이가 없었다. 질소 함량은 관수혼입 추비구에서 다소 높았으나 균일성이 떨어지고 혼입부에 벼의 도장이 발생하였다. 액비 시비 후 경시적인 암모니아 가스발생은 살포량이 많을수록 높았으며 살포 당일에 가장 높았고, 써레질 후에는 거의 발생하지 않았다. 벼의 수량은 담수 기비구보다 건답 기비구에서 증수되었으나 처리구간에 큰 차이는 없었으며, 제트분무 추비구에서는 유수형성기에 과도한 질소공급으로 영양생장을 지속하여 등숙율이 약 20% 저하되었고 식물체에 물리적 피해도 나타났다. 가장 적은 수확량을 보인 담수 기비+제트분무 추비구와 비교하여 건답 기비+관수혼입 추비구에서 9.6% 증수되었다.

Keywords

References

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