PROBLEM TO BE SOLVED: To provide a water washing investigation apparatus of lawn grass rhizosphere, making constant the amount of water and the water-discharging method of the water washing investigation, precisely catching the lawn grass rhizosphere existing inside soil as it is and also letting anybody easily equally execute through eliminating individual differences in the washing method.SOLUTION: This water washing investigation apparatus of lawn grass rhizosphere comprises forming a fan-shaped discharge nozzle 1 at the point, a liquid flow meter 2 in the center and an applied part 3 to a water hose at the rear side to make a connected structure whereby the water washing is executed through being combined with the loading part of an investigation subject lawn grass growth soil of a bamboo basket with 1-5 mm scale of mesh.COPYRIGHT: (C)2003,JPO【課題】芝草根圏の水洗調査を水量、水の吐出方法を一定にし、土壌内部に存在しているそのままの形で正確にとらえられ、また、洗い方の個人差をなくし、誰でも簡単に同じように実施可能とする。【解決手段】扇状吐出ノズル1を先端、液体流量計2を中央、水道ホースとの装着部3を後方に編成して、連接する構造とした芝草根系水洗調査器であり、その水洗は1~5ミリメートル目合いのざるの調査対象芝草生育土壌積載部と組み合わせて実施する方法をとる。
