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Effects of Liquid Pig Manure Application Level on Growth Characteristics, Yield, and Feed Value of Whole Crop Barley at Reclaimed Tidal Land in Southwestern Korea

Shin, Pyeong;Cho, Kwang-Min;Back, Nam-Hyun;Yang, Chang-Hyu;Lee, Geon-Hwi;Park, Ki-Hun;Lee, Dong-Sung;Chung, Doug-Young

  • 투고 : 2014.10.30
  • 심사 : 2014.12.15
  • 발행 : 2014.12.31

초록

본 연구는 영산강간척지와 새만금간척지에서 청보리 재배시 돈분뇨액비 적정 시용수준을 구명하기 위해 전남 해남군 소재 농가포장과 벼맥류부 계화간척지에서 처리구를 무시용, 액비 50%, 100%, 150%, 200%로 두고 토양 화학성, 생육, 수량, 식물체 양분흡수 및 사료가치를 조사하였다. 돈분뇨액비의 시용수준이 증가할수록 pH는 변화가 없었으나 토양유기물 및 유효인산의 함량이 증가하였고 치환성 양이온은 영산강간척지에서 $Na^+$가, 새만금간척지에서는 $K^+$가 크게 증가하였다. 영산강간척지에서 청보리의 초장은 돈분뇨액비 100%, 150%, 200%에서 각각 102 cm에서 103 cm로 큰 차이가 없었고 새만금간척지의 청보리 초장 또한 각각 100 cm에서 103 cm로 큰 차이가 없었다. 하지만 $m^2$당 경수의 영향으로 인해 영산강간척지에서 청보리 생체수량이 $27.5ton\;ha^{-1}$에서 $32.6ton\;ha^{-1}$로 증가하였고 새만금간척지에서 $9.7ton\;ha^{-1}$에서 $11.2ton\;ha^{-1}$으로 증가하였다. 영산강간척지에서 건물수량은 각각 $10.0ton\;ha^{-1}$, $10.5ton\;ha^{-1}$이었고 새만금간척지에서 돈분뇨액비 150%시용과 200% 시용의 건물수량은 각각 $10.5ton\;ha^{-1}$, $11.2ton\;ha^{-1}$이어서 통계적으로 차이가 없었다. 식물체 분석에서는 액비 시용수준이 증가할수록 T-N, T-P, $K^+$, $Na^+$의 함량이 증가하였다. 사료가치 분석에서 조단백질은 영산강간척지에서 4.9%에서 6.7%로, 새만금간척지에서 4.7에서 7.7%로 액비 시용수준이 증가할수록 증가하였다. TDN 함량은 액비 시용수준에 따른 경향을 찾을 수 없었지만 TDN수량은 영산강간척지에서 $2.1ton\;ha^{-1}$에서 $7.4ton\;ha^{-1}$로, 새만금간척지에서 $2.0ton\;ha^{-1}$에서 $6.9ton\;ha^{-1}$로 액비 시용수준이 증가할수록 TDN 수량이 증가하였다. 두 간척지에서 청보리의 수량을 고려했을 때 돈분뇨액비 시용시 영산강간척지는 청보리 질소 표준시비량의 100%, 새만금간척지는 150% 수준을 2번 나누어 시용하는 것이 바람직하다고 판단된다.

키워드

Liquid pig manure;Whole crop barley;Yield;Optimum rate;Reclaimed tidal land

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피인용 문헌

  1. Effect of Slurry Composting and Bio-filtration (SCB) by Fertigation on Soil Chemical Properties and Growth of Red Pepper (Capsicum annuum L.) vol.48, pp.5, 2015, https://doi.org/10.7745/KJSSF.2014.47.6.579

과제정보

연구 과제번호 : Cooperative Research Program for Agriculture Science & Technology Development

연구 과제 주관 기관 : Rural Development Administration