Efficient slow-release fertilizer for corn seedling 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 corn seedling on beach saline land. The fertilizer is characterized by including the following components by weight: modified super absorbent resin, micron silicon sol, nano carbon, esterified starch, desulfurization gypsum, aqueous solution of trace element fertilizer, sweet potato slag powder, lemon acid industrial waste, hemp seed meal, biochemical fulvic acid, a sodium ion adsorbent, activated attapulgite powder, and guar gum. The invention uses esterified starch, desulfurized gypsum and modified super absorbent resin as a basic coating material; and materials in different sizes including nano carbon and micron silicon sol rich in trace elements are added in the coating material, so as to enrich the pore size, water adsorption, water retention, adsorbability and acid-base property of the coating material. The efficient slow-release fertilizer can realize protection of root cells of corn seedling on beach saline land, promote the absorption and utilization of different nutrition materials in the environment, guarantee survival rate and reach 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 corn seedlings 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 ...

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.