PROBLEM TO BE SOLVED: To provide a hydroponic culture method capable of easily controlling the symbiotic activities between plants and microorganisms, aiming to solve the problem that the conventional microorganism symbiosis-type hydroponic culture has tried to control the symbiotic activities between plants and microorganisms by only administering useful microorganisms, without considering the conditions such as the density of useful microorganism in the rhizosphere, the growth stage of the crop plant, the structural characteristics of the hydroponic culture apparatus, and the kind of the main crop plant, so the symbiotic activities between plants and microorganisms has been hardly maintained stably since the state of the symbiosis changes with the changes of the above mentioned conditions.SOLUTION: A plant highly able to gather and proliferate microorganisms is mix-planted in a hydroponic culture apparatus installed in an open-type greenhouse. In addition, useful natural symbiotic bacteria are separately manufactured by utilizing symbiotic activities between the plants of the same kind as the mix-planted plant and microorganisms. The useful natural symbiotic bacteria are continuously administered and the nutrient liquid temperature is controlled.COPYRIGHT: (C)2016,JPO&INPIT【課題】 既存の微生物共生型水耕栽培は、有用微生物の投与のみで植物と微生物との共生活動を制御しようとしているが、根圏の有用微生物密度、作物の生育段階、水耕装置の構造的特徴、主作物の種類等の条件を考慮しておらず、これらの条件の変化によって共生の状態が種々変化するため、作物と微生物との共生活動を安定的に維持することは困難であった。本発明は、植物と微生物との共生活動の制御が簡便にできる水耕栽培方法を提供することを目的とする。【解決手段】 開放型温室に設置された水耕装置において、微生物を集め繁殖させる力が強い植物を混植し、別途、当該混植植物と同種の植物を使い植物と微生物との共生活動を利用して製造した有用自然共生菌を継続的に投与し、養液温度を制御する。
