Growth and Quality Responses of Flue-cured Tobacco to Phosphate bevels in the Field Experiment

토양중 인산함량 및 인산시비량이 담배의 생육 및 품질에 미치는 영향

Field experiment was conducted in soils having different amount of available phosphate (35, 140 and 350ppm) to see effects of additional phosphate application(0, 5, 10, 15, 20 and 30kg/10a) on yield and quality of flue-cured tobacco. Growth was affected by additional phosphate application only in soil with 35ppm of available phosphate, as was dry weight of tobacco. Maturity and content of chemical constituents of tobacco leaves were not significantly influenced by additional phosphate treatments. Tobacco leaf production increases with additional phosphate up to 10kg/10a only in soil with the lowest amount of available phosphate, but the price was not affected at all. These results suggest that art applicable phosphate of about 10kg/10a is enough for maximum production of flue-cured tobacco even soil very low in available phosphate.

土壤中 有效燐酸 含量이 相異한 圃地(350, 140, 35ppm)에 燐酸質 肥料를 0, 5, 10, 15, 20, 30kg/10a로 各各 處理하였을 때 담배의 生育과 品質에 미치는 효과를 調査하였다. 담배의 生育은 生育後期에 下位地(35ppm)만 燐酸質 肥料 增施 效果가 認定되었으며 乾物重은 담배 生育과 同一한 傾向이었다. 담배의 成熟과 葉中 化學成分은 燐酸質 肥料에 影響을 받지 않았다. 乾葉의 品質은 土壤中 有效燐酸 含量에 關係없이 비슷하였으며 收量은 下位地에서만 燐酸質 肥料의 增施效果가 認定되어 10kg/10a 施肥면 충분한 生産量을 期待할 수 있는 것으로 나타났다.