To provide an agricultural environment conditioner that ensures the formation of a fermented product on the surface of a support, and can inhibit separation of the support from the fermented product.SOLUTION: An agricultural environment conditioner has a porous support, and has, on the porous support, an aggregation deposition layer that has aggregated and deposited soil microorganisms, culture materials, and mineral particles. The aggregation deposition layer is a fermented product.SELECTED DRAWING: Figure 13【課題】担持体表面での発酵物の形成を確保し、担持体と発酵物との分離を抑制することができる農業環境調和材を提供すること。【解決手段】多孔質の担持体と、担持体の表面に、土壌微生物、培養材、及びミネラル粒子が凝集して堆積した凝集堆積層と、を有し、凝集堆積層は発酵物となっている農業環境調和材。【選択図】図１３
