Korean Journal of Soil Science and Fertilizer (한국토양비료학회지)

Korean Society of Soil Science and Fertilizer (한국토양비료학회)
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Effect of Leaf Blade-cutting on Ripening of Rice

수도(水滔)에 있어 전엽(剪葉)이 등숙(登熟)에 미치는 영향(影響)(예보(豫報))

  • Park, J.K. (Institute of Plant Environment, Office of Rural Developement) ;
  • Kim, Y.S. (Institute of Plant Environment, Office of Rural Developement) ;
  • Lee, J.K. (Institute of Plant Environment, Office of Rural Developement)
  • 박준규 (농촌진흥청, 식물환경연구소) ;
  • 김영섭 (농촌진흥청, 식물환경연구소) ;
  • 이종기 (농촌진흥청, 식물환경연구소)
  • Published : 1968.12.31
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Abstract

The effect of number of leaf after heading time on the growth of residual part and translocation of carbohydrates were investigated with water culture condition. Mutual shading and root rot were prevented. The results may be summerized as follows; 1. The ratio of ripened grain in the plot of no-leaf, flag leaf, two-leaf(flag and 2nd leaf) and three-leaf (flag, 2nd and 3rd leaf) was 38.8, 74.7, 83.9 and 87.0% respectively. The thousand grain weight was 21.3g, as the lowest value in no-leaf plot and was 28.7g in all other plots. 2. The accumulation of carbohydrate translocated in culm was increased by increment of leave-cutting, whereas the weight of culm was decreased. 3. It was suggested that healthy flag and 2nd leaf can keep the ratio of ripened grain around 80 percent.

엽(葉)의 차광(遮光)을 피(避)하고, 근부(根腐)를 피(避)하는 일방(一方) 양분(養分)을 적정(適正)히 공급(供給)할 수 있는 수경재배(水耕栽培)의 조건하(條件下)에서 출수이후(出穗以後)의 엽(葉)의 잔존수(殘存數)가 후기생육(後期生育) 및 탄수화물(炭水化物)의 전류(轉流)에 미치는 영향을 검토(檢討)하였으며 그 결과(結果)를 요약(要約)하면 다음과 같다. 1. 출수기(出穗期)에 전엽전엽(全葉剪葉), 지엽(止葉) 1 매잔류(枚殘留), 토위엽(土位葉) 2 매잔류(枚殘留) 및 토위엽(土位葉) 3 매잔류(枚殘留) 등 처리(處理)에 있어 등숙비율(登熟比率)은 각각(各各) 38.8, 74.7, 83.9 및 87.0%이였으며 정조천립중(精租千粒重)은 전엽전엽(全葉剪葉)이 21.3g로 가장 낮고 기타처리(基他處理)는 28.7g로 차이(差異)가 없었다. 2. 전엽수(剪葉數)의 증가(增加)에 따라 출수기(出穗期)에 축적(蓄積)된 탄수화물(炭水化物)의 전류(轉流)는 증가(增加)되며 간기중(稈基重)은 감소(減少)된다. 3. 출수기(出穗期) 이후(以後) 지엽(止葉)과 차엽(次葉)2매(枚)가 건재(健在)하면 등숙비율(登熟比率) 80% 정도(程度)로 유지(維持)시킬 수 있으리라 추정(推定)된다.

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