| abstract |
An object of the present invention is to reduce absorption of cadmium into agricultural crops at a low cost, without requiring complicated soil management and flood management, and without imposing a heavy load on the environment. To provide a soil-improving fertilizer that combines efficacy. A soil-improving fertilizer was obtained by kneading and solidifying a phosphate mineral and kaolin clay containing halloysite. The mixing ratio of the phosphate mineral and the kaolin clay containing halloysite is 30 to 300 parts by weight of kaolin clay containing halloysite with respect to 100 parts by weight of the phosphate mineral. The soil improving fertilizer is further mixed with allophane, slaked lime, mashed lime, calcium silicate, and charcoal. [Selection figure] None |