Korean Journal of Soil Science and Fertilizer (한국토양비료학회지)

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

Effects of Green Manure Crops, Hairy vetch and Rye, on N Supply, Redpepper Growth and Yields

질소공급, 고추의 생육 및 수량에 대한 녹비작물 환원 효과

  • Received : 2008.03.20
  • Accepted : 2008.06.06
  • Published : 2008.08.28
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Abstract

Winter annual green manure crops may be an effective tool for environmental-friendly agriculture system. The effect of legume (hairy vetch), non-legume (rye) and N fertilization ($190kg\;N\;ha^{-1}$) was examined and compared on red-pepper yield, nitrogen uptake, carbohydrate composition, and soil N and C contents. We monitored soil N and C for 120 days after incorporation (DAI) of green manures or mineral fertilizer. The mineralization of nitrogen reached the maximum around 30 DAI. The amount of inorganic nitrogen supplied by mineralization of hairy vetch residue was greater with than chemical N or rye. Photosynthetic rate was similar by 70 DAT in all treatments however, it in rye-incorporated red-pepper presented a sharp decline at later growth period. Leaf total nitrogen was greater with hairy vetch and chemical N than rye throughout the experiment. The soluble sugar increased steadily in all treatments from 40 to 110 days after transplanting (DAT) whereas starch showed a tendency of great decrease. Hairy vetch greatly promoted red-pepper growth by the later period however, chemical N showed the highest fruit yields.

동계녹비작물의 활용은 친환경농업을 위한 유용한 방법중의 하나이다. 고추 수량, 질소흡수, 탄수화물 합성 및 토양 질소공급에 대한 두과(헤어리베치) 및 화본과(호밀) 녹비작물의 효과를 조사하였다. 녹비작물로부터 무기화된 질소는 토양환원 후 30일경에 최대치에 도달하였으며, 무기태 질소의 양은 $645mg\;kg^{-1}$ (헤어리베치) 및 $237mg\;kg^{-1}$ (호밀) 이었다. 토양 환원된 헤어리베치로부터 무기화된 질소의 양은 화학질소 ($365mg\;kg^{-1}$)보다 높았는데 이는 헤어리베치의 투입량이 질소기준으로 약 2배였기 때문인 것으로 판단된다. 광합성량과 탄수화물 합성은 정식 후 70일까지 처리간에 큰 차이를 보이지 않았지만, 생육후기 호밀처리구의 고추 광합성량과 탄수화물 합성량(전분)이 다소 감소하는 경향을 보였다. 두과녹비작물인 헤어리베치가 호밀에 비해 고추의 생육 및 수량에 큰 영향을 미치는 것으로 나타나, 향후 고추재배시 헤어리베치의 화학비료 대체효과는 클 것으로 사료된다.

Keywords

References

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