Effects of Green Manure Crops of Legume and Gramineae on Growth Responses and Yields in Rice Cultivation with Respect to Environment Friendly Agriculture

친환경농업기술 개발을 위한 벼 재배 시 벼의 생육 및 수량에 대한 두과와 화본과 녹비작물의 효과

  • Song, Beom-Heon (Dept. of Plant Science, College of Agriculture, Life & Environment Sciences, Chungbuk National University) ;
  • Lee, Kyung-A (Dept. of Plant Science, College of Agriculture, Life & Environment Sciences, Chungbuk National University) ;
  • Jeon, Weon-Tai (Crop Environment Division, National Institute of Crop Science, RDA) ;
  • Kim, Min-Tae (Crop Environment Division, National Institute of Crop Science, RDA) ;
  • Cho, Hyun-Suk (Crop Environment Division, National Institute of Crop Science, RDA) ;
  • Oh, In-Seok (Crop Environment Division, National Institute of Crop Science, RDA) ;
  • Kim, Chung-Guk (Crop Environment Division, National Institute of Crop Science, RDA) ;
  • Kang, Ui-Gum (Crop Environment Division, National Institute of Crop Science, RDA)
  • 송범헌 (충북대학교 농업생명환경대학 식물자원학과) ;
  • 이경아 (충북대학교 농업생명환경대학 식물자원학과) ;
  • 전원태 (국립식량과학원 작물환경과) ;
  • 김민태 (국립식량과학원 작물환경과) ;
  • 조현숙 (국립식량과학원 작물환경과) ;
  • 오인석 (국립식량과학원 작물환경과) ;
  • 김충국 (국립식량과학원 작물환경과) ;
  • 강위금 (국립식량과학원 작물환경과)
  • Received : 2010.03.30
  • Published : 2010.06.30

Abstract

The agricultural techniques of environmental friendly using the green manure crops have been required recently more to have the safety agricultural products and to reduce the use of fertilizers and agricultural chemicals. The utilization of green manure crops related closely to cropping system would be very important. The purposes of this study are both to investigate the effects of green manure crops of hairy vetch, legume, and rye, gramineae, and to compare the effects between them in rice cultivation. The hairy vetch and rye were treated as green manure crops into paddy soil at 10 days before the rice transplanting. The plant height was increased gradually from the maximum tillering to the heading growth stage, showing that it was the highest with treatment of conventional cultivation in 2007 and the highest with hairy vetch in 2008. The number of tillers was higher with treatment of hairy vetch and hairy vetch+rye than those with the conventional cultivation. Dry weight was also higher with hairy vetch than that with the conventional, while it was lower clearly in rye than those in hairy vetch and conventional. According to the high tilller number and spikelet number per panicle out of the yield components relatively, the yield of rough rice was increased to about 6% and 8% in 2007 and 2008, respectively, comparing with the yield in the conventional cultivation. Based on these results, the hairy vetch would be a good green manure crop in rice cultivation.

동작물과 하작물의 작부체계와 녹비작물을 활용하는 벼재배 기술을 개발하기 위하여 2007년과 2008년의 2년 동안 충북대학교 농업생명환경대학 농장 답작 시험포장에서 공시 녹비작물로는 두과작물인 헤어리베치와 화본과작물인 호밀을 사용하여 배 재배시 녹비작물들의 효과를 조사분석하기 위하여 수행한 연구결과는 다음과 같다. 초장은 최고분얼기, 수잉기에서 출수기에 이르기까지 완만한 속도로 컸으며, 관행처리구에서 가장 큰 약 105 cm정도를 보였고, 녹비처리구들에서는 약 100 cm 정도로 뚜렷한 차이는 아니지만 헤어리베치, 헤어리베치+호밀, 호밀처리구순으로 초장의 크기를 보였다. 최고분얼기의 분얼수는 녹비처리구에서 관행처리구에서보다 더 많았으며 헤어리베치와 헤어리베치+호밀처리구는 비슷하고 호밀처리구는 관행구와 비슷한 분얼수를 보였다. 출수기의 유효분얼수도 최고분얼기와 비교해 그 수가 줄었지만 비슷한 경향이었으며, 헤어리베치처리구에서 가장 많은 포기당 19개 정도였다. 벼의 수량 및 수량구성요소는 헤어리베치처리구가 관행구에 비해 주당수수가 뚜렷이 많았으며, 수수당 영화수도 2008년에는 관행구에서 많았지만 전반적으로 헤어리베치구에서 많았다. 천립중과 등숙율에서는 큰 차이를 보이지 않았지만 주당수수와 수수당 연화수에 의해 정조수량은 헤어리베치처리구에서 관행구에서보다 2007년에는 5.3% 2008년에는 7.9%의 더 높은 수량을 보였다. 반면에 호밀구에서는 관행구에 비교해 수량이 현저히 떨어 졌다.

Keywords

References

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