Sustained or controlled release blending fertilizer containing N fertilizer synergistic component and medium trace element

Abstract

The invention discloses a sustained or controlled release blending fertilizer containing an N fertilizer synergistic component and a medium trace element. The sustained or controlled release blending fertilizer consists of the following components in parts by weight: 10 parts of N fertilizer synergistic component urea, 5 parts of medium trace element particles, 10-20 parts of sustained or controlled release urea, 0-50 parts of granular monoammonium phosphate, 0-50 parts of granular diammonium phosphate and 10-40 parts of granular potassium chloride or granular potassium nitrate or granular potassium sulphate. The sustained or controlled release blending fertilizer disclosed by the invention is simple in preparation process and low in production cost, does not need to be dried, can not generate three-waste emission, is high in product particle strength, strong in compatibility and flexible and diverse in product formula, can be flexibly configured as required, and can be used for improving the utilization rate of the fertilizer by virtue of double-channel, increasing both the production and income, and reducing the cost. The synergistic effect of large and medium trace elements can be used for promoting the improvement of the utilization rate, providing comprehensive and nutrient care for crops, and also reducing the labor intensity of farmers, thus enabling the fertilization process to become simple; the sustained or controlled release blending fertilizer can be used for performing soil testing and formulated fertilization according to different soil types and different crop strains, and can be used for avoiding the fertilizer from being excessively applied, protecting the environment, saving the energy and reducing the emission.

Description

Technical field [0001] The present invention involves a fertilizer, especially for a mixed mixing fertilizer containing N fertilizer -containing components and medium -sized elements. Background technique [0002] At this stage, the study of slow -controlling fertilizer, first, to control the release of nitrogen fertilizer to achieve the purpose of slowly controlling interpretation; the other is to achieve the transformation of nitrogen by controlling the activity of soil microorganisms, delay the loss of nitrogen to achieve the slow control release releasethe goal of.These channels are greatly affected by the environment such as water and temperature, which reduces the effectiveness of slowly controlling interpretation to a certain extent. [0003] Slow -controlled release of mixed fertilizer is generally made of mixed urea and mixing urea -nitrogen, phosphorus, and potassium fertilizers. It mainly controls and delay the release of urea to achieve the purpose of slowly controlli...

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