<紀要論文>
DEVELOPMENT OF A SIPHON SYSTEM WITH POROUS TUBES FOR MAINTAINING A CONSTANT NEGATIVE WATER PRESSURE IN A ROOTING MATRIX

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概要 A reliable and effective water and nutrient delivery system with porous tubes has been developed for growing plants at a controllable, constant, negative water pressure. Multiple porous stainless stee...l tubes were positioned 4cm apart in a shallow tray (44cm long, 32cm wide and 8cm deep), and then covered with a 4cm layer of fine medium (≤1mm in diameter). Nutrient solution was recirculated through the porous tubes under a negative pressure maintained with a siphoning procedure. A range of negative pressures from 0 to 2.0 kPa in the rooting matrix were obtained by changing the length and diameter of inlet and outlet tubing, and/or the heights of inlet solution and outlet tubing end. Multiple growing trays, with similar or different pressures, can be maintained with a single system. The system has shown to be effective for growth of potato plants.続きを見る

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KJ00004506842 pdf 412 KB 112  

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登録日 2009.04.22
更新日 2015.11.06