Efficient slow-release fertilizer for milk vetch on beach saline land and preparation method thereof

Abstract

The invention belongs to the field of slow-release fertilizer, and specifically discloses an efficient slow-release fertilizer for milk vetch on beach saline land. The fertilizer is characterized by including the following components by weight: calcined oyster shell micron powder, agar, lignite wax resin, a resin solvent, stearic acid, mesoporous silica nanoparticles, halophilic composite bacteria, amino acid, common seepweed herb powder, chelated iron, nitrogen phosphorus and potassium microelement fertilizer, methyl salicylate, sodium dodecyl benzene sulfonate, alga dregs, active pond mud doped with silkworm excrement, luffa vine waste and a proper amount of water. The invention uses lignite wax resin as a basic coating material; and materials in different sizes including micron composite hydrogel and mesoporous silica nanoparticles are added in the coating material, so as to enrich the pore size of the coating material, improve dynamic slow release performance and nutrient utilization efficiency, and improve the regulation of fertilizer efficiency. The efficient slow-release fertilizer promotes absorption and utilization of different nutrition materials in environment by milk vetch on beach saline land, and promotes the efficient cultivation.

Description

technical field [0001] The invention belongs to the field of slow-release fertilizers, and in particular relates to a high-efficiency slow-release fertilizer for milk vetch in tidal flat salt land and a preparation method. Background technique [0002] Coated slow-release fertilizer can significantly improve the utilization rate of fertilizer. However, the vast majority of slow-release fertilizers currently on the market are facing many problems, for example: 1. The coating material is made of chemically synthesized non-degradable polymers, and these refractory polymer coating materials are easily left in agricultural fertilizers. Soil degradation and serious pollution are caused in the soil; 2. The coating material is made of natural polymer degradable materials, but the slow-release fertilizers made of these natural polymer degradable materials are too expensive on the one hand, and the controlled release effect is not good on the other hand , with the degradation of natu...

AI Technical Summary

Problems solved by technology

[0004] The fertilizer efficiency of slow-release fertilizers depends on the slow-release material and the form of coating. It is common in the market to use the same or different coating materials to achieve layered coating and then achieve slow-release regulation, but this will increase material costs and production costs.