KOREAN JOURNAL OF CROP SCIENCE (한국작물학회지)

The Korean Society of Crop Science (한국작물학회)
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Optimal Drainage Time of Barley Seeding Synchronized with Rice Harvesting in Paddy Field

벼 수확과 동시 보리 파종시 적정 낙수시기

  • Kim, Yang-Kil (Department of Rice and Winter Cereal Crop, NICS, RDA) ;
  • Choi, Jae-Seong (Department of Rice and Winter Cereal Crop, NICS, RDA) ;
  • Lee, Mi-Ja (Department of Rice and Winter Cereal Crop, NICS, RDA) ;
  • Park, Jong-Chul (Department of Rice and Winter Cereal Crop, NICS, RDA) ;
  • Kim, Tae-Su (Department of Rice and Winter Cereal Crop, NICS, RDA) ;
  • Kim, Kee-Jong (Department of Rice and Winter Cereal Crop, NICS, RDA)
  • 김양길 (농촌진흥청 국립식량과학원 벼맥류부) ;
  • 최재성 (농촌진흥청 국립식량과학원 벼맥류부) ;
  • 이미자 (농촌진흥청 국립식량과학원 벼맥류부) ;
  • 박종철 (농촌진흥청 국립식량과학원 벼맥류부) ;
  • 김태수 (농촌진흥청 국립식량과학원 벼맥류부) ;
  • 김기종 (농촌진흥청 국립식량과학원 벼맥류부)
  • Received : 2012.04.20
  • Accepted : 2012.08.13
  • Published : 2012.09.30
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Abstract

We have carried out the experiment to investigate optimal drainage time of barley seeding synchronized with rice harvesting in paddy field. Number of emerged barley seedling on moist paddy field was less than that of common paddy field. It is very hard to plow using combine owing to long time to work on wet condition compared to drying condition of paddy field. According to the drainage time, growth and yield of barley were not significantly different. However, late drainage time decreased the spikes per $m^2$. Rice yield and 1,000 husked rice grain weight were not significant depending on drainage times at 15 days, 20 days and 25 days before barley seeding. The range of 1,000 husked rice grain weight was 21.7~22.2 g on different drainage conditions. In results, on considering of soil hardness and time of labor, the optimal contents of soil moisture was about 33%. This study reveals that drainage time at 20 days before barley seeding is proper to increase seedlings and yield.

벼 수확동시 보리조파 전 적정 낙수시기는 배수가 불량한 전북통인 미사질양토에서 1. 토양수분이 많을수록 입모율이 감소하였다. 2. 토양수분이 많을 경우 콤바인 작업시 궤도의 침하로 작업시간이 길어졌으며, 수분함량이 적을 경우에는 작구부에 부하가 가중되어(경도증가) 작업시간이 길어지는 것으로 나타났다. 3. 낙수시기에 따른 보리생육 및 수량 등은 차이가 없었으나 수수는 낙수시기가 늦을수록 적었다. 4. 벼 수량과 천립중은 통계적인 차이는 인정되지 않았으나, 낙수시기별 현미 천립중이 21.7~22.2 g 범위로 낙수가 빠를수록 가벼워지는 경향을 나타내었다. 5. 이상의 결과에서 배수가 불량한 미사질양토에서는 토양경도와 작업시간을 감안한 적정 토양수분 함량은 33% 정도로 입모율 확보 및 수량증대에 좋을 것으로 판단되었다.

Keywords

References

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