| 摘要 |
Disclosed is an agronomic treating agent, said agent being in solid and divided form, and comprising solid particles comprising at least one active species for the agronomic treatment, characterized in that each particle comprises: a core constituted by a grain of a solid material, comprising an inner developed surface that is greater than its apparent surface, the grain having a macroporous structure, the active species of the agronomic treatment, absorbed into the grain and/or adsorbed onto the surface of the grain, a membrane comprising the constituted by polymer, which encapsulating the core, active species, which is at least one hydrophilic, another membrane, encapsulating the core comprising the active species, said other membrane being constituted by at least one hydrophobic polymer. .
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