Дослідження процесу адсорбції мінеральних добрив грунтовим середовищем

Abstract

Application of mineral fertilizers in agriculture causes constant accumulation of residues of fertilizers that were not assimilated in the lower layers of the soil, which leads to the constant penetration of nitrates to groundwater water horizons. This process is mainly affected by two main factors: diffusion of fertilizers deep into the soil, convective and molecular, and adsobtion of components of fertilizers in soil environment. While the diffusion process of components of fertilizers is sufficiently investigated, the process of adsorption of individual components of fertilizers and its effect on the rate of penetration of fertilizers deep into the soil is not sufficiently explored. Therefore, we conducted researches of adsorption of nitrogen fertilizers in soil environment, such as calcium nitrate, potassium nitrate and sodium nitrate. Results of experimental investigations shows that the adsorption of components of fertilizers affect the rate of migration of fertilizers and determines the amount of fertilizers that will penetrate deep into the soil.