| Popis: |
有機栽培を行ったコシヒカリと塩粳48号の根系生育, 溢泌液量, 収量, 収量構成要素および玄米品質について検討した.対照区として, 慣行栽培のコシヒカリを用いた.有機栽培を行った場合には根量が増加する傾向が認められ, 根からの溢泌液量も有機栽培区で大きい傾向を示した.収量は有機栽培区の方が高く, 選別後の玄米外観品質も優れていたが, 良質粒歩合は有機栽培区の方が低く, 玄米のタンパク質含量も高かったため, 食味計による食味値は低かった.しかし, 官能検査を行うと高い食味評価が示され, 玄米中のタンパク含量に重点が置かれた現在の食味評価基準では評価できない要因が, 有機栽培にあることが示唆された. Effects of organic farming of rice cv. Koshihikari and Enkou 48 with Bokashi-fertilizer on the root system, bleeding sap, yield, yield components and grain quality were discussed. Koshihikari grown with the organic (Bokashi-Fertilizer) fertilizers showed a tendency to have a larger root dry weight rather than control. The values of grain eating quality in case of the organic farming system was lower than in control because of high protein content of the grains. Organic farming rice showed a good evaluation in the results of the sensory test after cooking. There may be other factors affecting the eating quality in case of the organic farming rice except protein content or other known factors affecting the eating quality in case of the organic farming rice except protein content or other known factors in rice grains. |
