2026-10-14T15:10:25Z https://www.scidb.cn/oai

10.57760/sciencedb.iga.01373 2026-09-15T15:18:34Z

2026-09-15 A Soil Amendment and Its Preparation Method doi:10.57760/sciencedb.iga.01373 en This patent discloses a soil amendment and its preparation method, addressing the problems of soil pollution and acidification. The amendment consists of 1~10 parts of dolomite and 1~40 parts of urea, with the optimal ratio being 5 parts of dolomite combined with 10 parts of urea. For preparation, the two raw materials are separately ground and sieved through a 200-mesh sieve before mixing; the mixture is then calcined at 500 °C for 2 hours under aerated conditions, followed by re-grinding and sieving to obtain the final product. This soil amendment features low-cost raw materials and a simple preparation process. It can significantly increase soil pH, reduce exchangeable aluminum content to eliminate aluminum toxicity, and improve soil permeability. The optimal application rate is a solid-to-solid ratio of 0.5% (amendment to soil). It is suitable for the amelioration of acidified black soil and other acidic soils, exhibiting an excellent soil improvement effect. soil amendment; dolomite; urea; acidified black soil; soil acidification 于洪文 PUBLIC https://creativecommons.org/licenses/by/4.0/ dataset Science Data Bank