Process for preparing biological organic special composite fertilizer

Abstract

The invention discloses a process for preparing a biological organic special composite fertilizer. The process mainly comprises the following steps: performing rough crushing on raw materials, fermenting the raw materials, performing fine crushing on the raw materials, pelletizing, performing cooling drying, and performing casual inspection on a finished product. With respect to raw material proportioning, organic fertilizers and inorganic fertilizers are combined together, so that advantages of the organic fertilizers and the inorganic fertilizers are integrated, the fertilizer has the characteristics that slow action and quick effects can be supplemented, balanced and stabilized with the combination of the organic fertilizers and the inorganic fertilizers, the fertilizer has the function of being slow, stable and long-lasting, and the purposes of balanced and efficient fertilizer supply is achieved; as the water contents of composite fertilizer granules are precisely controlled in the preparation process, the composite fertilizer granules can be relatively tightly adhered to one another, are not loosened easily in later periods, can be slowly released after being applied to soil and can stably supply fertilizers to crops for a long time, and in addition, the fertilizer is convenient to use; when being used as a base fertilizer, the fertilizer only needs to be applied once to a complete plough layer by using a fertilizer distributor, so that the working intensity is alleviated, and the labor use cost is reduced.

Description

technical field [0001] The invention relates to the technical field of granular organic fertilizer preparation, more specifically, it relates to a preparation process of special compound fertilizer for biological organic. Background technique [0002] Rice is a widely planted crop in my country, and it needs to supply different nutrients in each stage of its growth. [0003] At present, inorganic fertilizers are commonly used in rice fertilization operations, such as nitrogen fertilizers, phosphorus fertilizers, and potassium fertilizers. Although the fertilizer effect is fast, it is easy to cause soil compaction and low fertilizer efficiency utilization rate. Facilitate the decomposition and release of organic matter nutrients. However, the use of organic fertilizers has slow fertilizer effects and cannot meet the growth needs of rice in a short period of time. The above two fertilization methods, due to the limitations of the characteristics of the fertilizer itself, no ...

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Problems solved by technology

[0004] Aiming at the problem that the application of fertilizers in the soil can not provide fertilizer effect for a long time in actual application, it needs to be applied repeatedly, which wastes manpower and material resources. The purpose of the present invention is to propose a production process for bio-organic special compound fertilizers. The specific scheme is as follows:

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