KOREAN JOURNAL OF CROP SCIENCE (한국작물학회지)

The Korean Society of Crop Science (한국작물학회)
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Effect of Alternative Row Pinching on Growth and Yield in Soybean

열간 교호 적심이 콩의 생육 및 수량에 미치는 영향

  • Kim Ik Je (Chungbuk Agricultural Research and Extension Services) ;
  • Son Seok Yong (Dept. of Agronomy, College of Agriculture, Chungbuk National University) ;
  • Nam Sang Young (Chungbuk Agricultural Research and Extension Services) ;
  • Ryu In Mo (Chungbuk Agricultural Research and Extension Services) ;
  • Kim Tae Jung (Chungbuk Agricultural Research and Extension Services) ;
  • Lee Cheol Hee (Chungbuk Agricultural Research and Extension Services) ;
  • Kim Tae Su (Chungbuk Agricultural Research and Extension Services)
  • Published : 2004.12.01
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Abstract

Lodging is one of the most serious problems in soybean cultivation. Therefore, improved cultural methods to reduce lodging as well as to increase photosynthetic ability should be mostly desirable to increase soybean production. The test variety was 'Hwangkeumkong' which was pinched at V7 stage. The greatest difference in canopy height between rows was shown when every other row was pinched, which also recorded the most effective reduction in lodging. The 9th leaf of soybean plants in non-pinching rows of alternative non-pinching and pinching plot showed the highest photosynthetic ability due to the greatest difference in canopy height. Although leaf area index was higher in pinched rows in average after 17 August, alternative pinching of every other row recorded the highest LAI on 5 September. Alternative pinching of every other row resulted $2\~14\%$ higher yield than non-pinching or complete pinching due to the increases of number of grains in the upper part of main stem and average grain weight of non-pinching rows and in alternative pinching.

콩 재배에서 가장 큰 문제의 하나인 도복의 경감을 위한 재배법 개선 방안과 초관 높이 차이에 의한 광합성능력의 향상을 모색하고자 열간 교호 적심이 콩의 생육과 수량에 미치는 영향을 분석한 결과는 다음과 같다. 1. 초관 높이 차이는 무적심 1열+적심 1열에서 가장 컸으며, 도복은 무적심 1열+적심 1열에서 도복경감 효과가 가장 컸다. 2. 제 9본엽의 광합성능력은 무적심 1열+적심 1열의 무적심 열이 가장 높았다. 3. 엽면적지수는 8월 17일 이후에 무적심 열에 비하여 적심 열이 높았고, 9월 5일에는 무적심 1열+적심 1열의 엽면적지수가 가장 높았다. 4. 수량은 무적심 1열+적심 1열에서 주경 상반부의 입수증가와 입중 증대로 전체 무적심에 비하여 $14\%$, 전체 적심에 비하여 $2\%$ 증수되었다.

Keywords

References

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