Development of a Basal Stem Heating System Using an Electric Heating Wire and Effects of Temperature on Growth and Yield of Eggplants in Forcing Culture.

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  • ナスの促成栽培における電熱線を用いた株元加温システムの開発と加温温度の違いが生育や収量に及ぼす影響
  • ナス ノ ソクセイ サイバイ ニ オケル デンネツセン オ モチイタ カブモトカオン システム ノ カイハツ ト カオン オンド ノ チガイ ガ セイイク ヤ シュウリョウ ニ オヨボス エイキョウ

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Abstract

To reduce the labor and running costs of cultivating eggplant in forcing culture, we developed a basal stem heating system. The system consisted of a low-consumption electric heating wire coupled with a more expensive thermal seat with high heat conductance. The working time required to install the system was 12 h 10a sup(-1) person sup(-1). When this basal stem heating system was operated at 20 deg C or 25 deg C, we observed an acceleration of lateral shoot and fruit growth and an increase in marketable yields from December to June. The amount of power required to run the system at 20 deg C was 50% less than that required to run the system at 25 deg C. These results show that 20 deg C may be a suitable temperature for this system for use in forcing culture of eggplants.

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