A slow and controlled release blended fertilizer containing N fertilizer synergistic components and medium and trace elements

Abstract

The invention discloses a slow-controlled release blended fertilizer containing N fertilizer synergistic components and medium and trace elements. 20 parts, 0-50 parts of granular monoammonium phosphate, 0-50 parts of granular diammonium phosphate, 10-40 parts of granular potassium chloride or granular potassium nitrate or granular potassium sulfate. The invention has the advantages of simple preparation process, low production cost, no need for drying, no discharge of three wastes, high product particle strength, strong recombinability, flexible and diverse product formulas, and can be flexibly configured according to requirements. Dual channels improve the utilization rate of fertilizers, increase production and income, and reduce costs. The synergistic effect of large, medium and trace elements promotes the improvement of fertilizer utilization rate, provides comprehensive nutritional care for crops, and at the same time reduces the labor intensity of farmers, making the fertilization process easier; according to different soil types and different crop types, fertilization formulas are tested to prevent excessive fertilizer application, environmental protection, energy saving and emission reduction.

Description

technical field [0001] The invention relates to a fertilizer, in particular to a slow-controlled release blended fertilizer containing N fertilizer synergistic components and medium and trace elements. Background technique [0002] At present, the research on slow and controlled release fertilizers, one is to achieve the purpose of slow and controlled release by controlling the release of nitrogen fertilizer; the other is to delay the conversion of nitrogen and the loss of nitrogen by chemically controlling the activities of soil microorganisms to achieve slow and controlled release. the goal of. These approaches are greatly affected by the environment such as moisture and temperature, which reduces the effectiveness of slow and controlled release to a certain extent. [0003] Slow and controlled release blended fertilizers are generally made by mixing slow and controlled release urea with nitrogen, phosphorus, and potassium fertilizers. The purpose of slow and controlled r...

AI Technical Summary

Problems solved by technology

These pathways are greatly affected by the environment such as moisture and temperature, which reduces the effectiveness of slow and controlled release to a certain extent.

[0003] Slow and controlled release blended fertilizers are generally made by mixing slow and controlled release urea with nitrogen, phosphorus, and potassium fertilizers. The purpose of slow and controlled release is mainly achieved by controlling and delaying the release of urea, so as to prolong fertilizer efficiency, increase production, and save costs. It has played an important role in agricultural development, improving product quality, and saving costs. However, the nutrients needed for crop growth are not limited to nitrogen, phosphorus, and potassium. Simple large-scale application of nitrogen, phosphorus, and potassium will make the middle and trace elements in the soil Reduced, resulting in the lack of trace elements, but affect the crops on the absorption of nitrogen, phosphorus, potassium, resulting in nutrient imbalance in plants, crop yield, quality decline, the symptoms of deficiency

[0004] However, due to the continuous use of slow and controlled release blended fertilizers mainly composed of nitrogen, phosphorus, and potassium for a long time, it is easy to cause the lack of trace elements in the soil. Granules are granulated by dry extrusion, which has high cost, high energy consumption and high use cost

Images