KOREAN JOURNAL OF CROP SCIENCE (한국작물학회지)

The Korean Society of Crop Science (한국작물학회)
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Study of Seedling Type for Transplanting Culture in Rice Paddy Field at the Newly Reclaimed Land

신간척지에서 벼 기계이앙재배에 적합한 모 종류 구명

  • 최원영 (농촌진흥청 국립식량과학원) ;
  • 김선 (농촌진흥청 국립식량과학원) ;
  • 이장희 (농촌진흥청 국립식량과학원) ;
  • 김시주 (농촌진흥청 국립식량과학원) ;
  • 최민규 (농촌진흥청 국립식량과학원) ;
  • 고종철 (농촌진흥청 국립식량과학원) ;
  • 이규성 (농촌진흥청 국립식량과학원) ;
  • 이경보 (농촌진흥청 국립식량과학원)
  • Received : 2012.02.21
  • Accepted : 2012.05.14
  • Published : 2012.06.30
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Abstract

This research was carried out to choose the suitable seedling type to transplanting in order to stabilize rice yield. The brief of this research to transplant the seedling divided into 10-day seedling, 20-day seedling, 30-day seedling, 33-day pot seedling in the field of Saemangeum Gyehwa, newly reclaimed land were following; Average salt content in 2 years was reduced from 0.16% to 0.04% after transplanting. Heading date of seedling type was Aug. 14 at 33-day pot seedling compared to 2 days at 30-day seedling, 3 days at 20-day seedling, 5 days late at 10-day seedling. Lodging index was highest at 30-day seedling, and also, field lodging was 50%. Ripening ratio and 1,000 grain weight were similar and panicle number was higher 20-day seedling > 10-day seedling > 33-day pot seedling > 30-day seedling. Rice yield was higher 10-day seedling = 20-day seedling > 33-day pot seedling > 30-day seedling. Head rice ratio was higher in 20-day seedling > 30-day seedling = 10-day seedling > 33-day pot seedling. Amylose content and protein content was not significantly different between seedling types. With this results, the suitable seedling types in newly reclaimed land are 10-day and 20-day seedling.

본 연구는 신간척지에서 벼 기계이앙재배시 염 피해가 적으면서 안정적인 쌀수량 확보를 위하여 모 종류를 어린모, 치묘, 중묘, 폿트묘로 새로 조성된 간척지인 새만금 계화포장에 이앙하여 수행한 내용을 요약하면 다음과 같다. 1. 2년 평균 토양염농도는 이앙전 0.16%에서 환수후 이앙 직후에는 0.04%로 낮아졌다. 2. 모 종류별 출수기는 폿트묘 이앙이 8월 14일인데 비해중묘이앙은 2일, 치묘이앙은 3일, 어린모이앙은 5일 늦게 출수되었다. 3. 도복관련형질에서 중묘이앙이 도복지수가 가장 높아 포장도복 역시 중묘이앙이 반도복 정도 되었다. 4. 수량구성요소를 보면 이앙모 종류별 등숙비율과 현미천립중은 비슷하였고, 주당수수는 치묘>어린모>폿트묘>중묘이앙 순으로 많았으며, 쌀수량은 어린모=치묘>폿트묘>중묘이앙 순으로 많았다. 5. 이앙모 종류별 쌀 품질에서 완전립비율은 치묘>중묘=어린모>폿트묘 순으로 높았고, 아밀로스함량과 단백질 함량은 이앙모 종류간 차이가 없었다. 결론적으로 새로 조성된 간척지에서 벼를 기계이앙재배할 때 안정적인 쌀 수량 확보를 위한 적정 이앙모는 어린모와 치묘가 적합하다고 판단된다.

Keywords

References

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