島根大学農学部
ISSN:0370-940X
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島根大学農学部研究報告 20
1986-12-20 発行
トマトの水耕栽培における肥培管理と養分吸収 : Logistic式による数値解析
Nutrient Management and Nutrient Absorption in the Hydroponic Culture of Tomatos : Numerical Analysis with the Logistic Equation
松井 佳久
梶岡 律子
野上 昌宏
水嶋 修
猪原 泰
引野 千嘉志
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内容記述（抄録等）
Tomatoes were cultivated by hydroponics, in which a nutrient solution was managed on the basis of only two indexes(pH and Ec) and the composition of additional fertilizer was always kept constant. This simplification in nutrient management caused virtually no decrease in the yield of tomato fruits, though the concentrations of a few nutrients varied greatly during cultivation from their initial concentrations. Thus, it was judged that this simplified method of management is applicable to practical hydroponic culture. It was also confirmed that the cumulative amounts of nutrients, such as N, P, K, Ca, and Mg, absorbed by a tomato plant during cultivation fit well to the Logistic equation in which cumulative temperature is used as an independent variable.
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PP. 191 - 195