PROBLEM TO BE SOLVED: To provide a growth environment-adjusting device which is capable of easily controlling environmental conditions of a temperature of culture medium or moisture, particularly root zone environment conditions, of plants, without a complex and expensive facility, and furthermore, assembly, disassembly, and for which maintenance are easy when using an assembly apparatus consisting of the plurality of the devices each as a unit.SOLUTION: There is provided a plant growth environment-adjusting device which includes: a pipe body having a pipeline which is surrounded by an outer pipe wall and an inner pipe wall both having a large number of through holes, while extending in an axial direction and culture medium filled into the pipeline. The adjusting device supports the pipe body at a position of appropriate height above the ground surface horizontally or obliquely. A cross section of the pipeline is in an inverse U-shaped irregular cross section, the pipe body has a hollow path extending in the axial direction, which is formed by the inner pipe wall, and the hollow path has an opening at a bottom end of the pipe body along the pipe body.COPYRIGHT: (C)2015,JPO&INPIT【課題】本発明は、複雑で高価な設備なしに、培地の温度や水分の環境条件、特に、植物の根域環境を容易に制御することができ、更に、この装置をユニットとして、複数の装置を含む集合体装置として用いるときに、組立、分解や、維持管理が容易である生育環境調節装置を提供することを目的とする。【解決手段】本発明によれば、共に多数の貫通孔を有する外側管壁と内側管壁によって囲まれつつ、軸方向に延びる管路を有する管体と、上記管路内に充填された培地を有し、上記管体を地面よりも上方で適宜高さの位置で水平に又は傾斜させて支持してなり、上記管路の横断面が逆U字状の異形断面であり、上記管体は上記内側管壁が形成する軸方向に延びる中空路を有し、上記中空路は上記管体の下端において上記管体に沿う開口を有する植物生育環境調節装置が提供される。【選択図】図1