A soil conditioner with improved water absorption by a lid is provided. A soil conditioner is configured by filling a container having air permeability with a soil conditioner. The container has a cylindrical vertically long body having air permeability, and a lid provided on the upper end of the body. The lid includes a cylindrical peripheral wall portion connected to the body and an end plate portion that closes an end portion of the peripheral wall portion. Water collecting grooves are provided on the outer surface of the end plate portion. A through hole is provided at the bottom of the water replenishment groove. According to this structure, the moisture supplied from the ground side is efficiently captured by the catching groove of the lid, and flows into the soil conditioner through the through hole opened at the bottom of the catching groove. [Selection] Figure 2【課題】蓋体による捕水性を向上させた土壌改良器を提供する。【解決手段】土壌改良器は、通気性を有する容器に土壌改良剤を充填して構成される。容器は、通気性を有する筒状の縦長の胴体と、胴体の上端部に設けられた蓋体と、を有する。蓋体は、胴体に接続される筒状の周壁部と、周壁部の端部を塞ぐ端板部と、を有する。端板部の外面には捕水溝が設けられる。補水溝の底には貫通孔が設けられる。この構成によれば、地面側から供給される水分が、蓋体の捕水溝で効率良く捕えられ、捕水溝の底に開いた貫通孔を通して土壌改良器の内部に流入する。【選択図】 図２
