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벼 무논점파재배와 이앙재배의 생육, 출수 및 등숙특성 비교

손지영;이충근;김준환;윤영환;양원하;최경진;최민규;박홍규;고종철;김연규;김정곤;양운호
Shon, Ji-Young;Lee, Chung-Kuen;Kim, Jun-Hwan;Yoon, Young-Hwan;Yang, Won-Ha;Choi, Kyung-Jin;Choi, Min-Gyu;Park, Hong-Kyu;Ko, Jong-Cheol;Kim, Yeon-Gyu;Kim, Chung-Kon;Yang, Woon-Ho

  • 투고 : 2012.03.14
  • 심사 : 2012.06.14
  • 발행 : 2012.06.30

초록

최근 개발된 직파재배의 일종인 무논점파는 무논점파기(8조식, $15{\times}28cm$, 주당 5~8립)를 이용하여 파종하므로 이앙재배의 재식거리와 유사한 밀도를 유지할 수 있는 장점이 있다. 벼 무논점파재배의 생육 및 출수특성과 출수일변동에 따른 등숙율과 완전립율의 변이를 알아보고자 국립식량과학원 답작과 논포장(수원)에서 2009년부터 2011년까지 3년동안 본 시험을 수행하였다. 1. 무논점파는 입모수는 기계이앙의 재식밀도와 큰 차이가 없었으나 분얼수가 많아 최고분얼기에 단위면적당 경수는 기계이앙의 1.3~2배였다. 최고분얼기 이후 분얼수는 감소해 성숙기 이삭수는 기계이앙과 큰 차이가 없었다. 2. 무논점파의 출수전 생육일수는 운광벼 84일, 호품벼 98일로 기계이앙의 파종일로부터 14일, 19일의 재배기간이 단축되었다. 3. 무논점파의 성숙기 생육특성은 간장과 수장 및 면적당 이삭수는 기계이앙과 차이가 없었다. 통계적 유의성은 없었으나 수당립수는 많아지는 경향이었다. 4. 출수기는 무논점파가 이앙보다 운광벼는 9일, 호품벼는 3일 늦어졌는데 호품벼의 연차간 변이가 작았다. 호품벼는 출수기간이 기계이앙보다 2일 짧아 동시출수율이 높았다. 4. 무논점파재배시 출수일변이에 따른 등숙율과 현미완 전립율은 기계이앙과 차이가 없거나 오히려 높은 것으로 나타났으나 조생종인 운광벼보다 중만생종인 호품벼의 연차간 변이가 적어 무논점파 안정성이 우수한 것으로 나타났다.

키워드

rice;wet-hill-seeding;tillering;heading;grain filling;head rice;direct-seeding;transplanting

참고문헌

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피인용 문헌

  1. Bakanae Disease Reduction Effect by Use of Silicate Coated Seed in Wet Direct-Seeded Rice vol.61, pp.1, 2016, https://doi.org/10.7740/kjcs.2012.57.2.151
  2. Effects of No-tillage Dry-seeding on Rice Growth and Soil Hardness vol.49, pp.6, 2016, https://doi.org/10.7740/kjcs.2012.57.2.151
  3. Changes of Weedy Rice Occurrence in Repeated Wet Direct Seeding and Alternate Transplanting/Wet Direct Seeding of Rice vol.2, pp.4, 2013, https://doi.org/10.7740/kjcs.2012.57.2.151