Micro-molecular biological controlled-release composite fertilizer and preparation method thereof

Abstract

The invention provides a micro-molecular biological controlled-release composite fertilizer which comprises the following components in parts by weight: 10-20% of urea, 15-30% of monoammonium phosphate, 10-25% of potassium sulfate and/or potassium chloride, 5-10% of micro molecular nitrogen powder, 15-20% of medium trace element powder, 15-20% of a slow-release organic matter mixed material and 0.2-0.6 per mill of a composite bacterium, wherein the content of nitrogen of micro molecular nitrogen powder is 30-40%; the medium trace elements comprise raw material powder of potassium, calcium, magnesium, sulfur, zinc, iron, boron, manganese and ore; the slow-release organic matter mixing material comprises byproducts of stevia rebaudiana powder, humic acid and soyabean protein; the effective bacterium content of the composite bacterium is 30-40 billion/gram. The invention further provides a preparation method of the micro-molecular biological controlled-release composite fertilizer. Therefore, the micro-molecular biological controlled-release composite fertilizer is not only relatively high in fertilizer efficiency, but also capable of ensuring that plants relatively well absorb metal elements.

Description

Technical field [0001] The invention relates to the technical field of biological organic fertilizers, in particular to a micromolecular biological controlled release compound fertilizer and a preparation method thereof. Background technique [0002] With the development of society, the area of ​​arable land has decreased sharply, while the growing population’s demand for food is increasing. Therefore, farmers can only rely on the use of chemical fertilizers and increase the use of chemical fertilizers to maintain and increase production. However, the extensive use of chemical fertilizers has caused serious nitrogen pollution in the soil. The emergence of organic fertilizers can replace some chemical fertilizers and further reduce soil pollution. [0003] Bio-organic fertilizer is an organic fertilizer that is processed from organic solid waste after fermentation, deodorization and complete decomposition of biological fertilizer strains. Organic fertilizer can activate the microor...

AI Technical Summary

Problems solved by technology

[0004] Although bio-organic fertilizers have many benefits to the soil, they have two fatal flaws: one is that the organic matter in bio-organic fertilizers can only be used alone, and when mixed with inorganic fertilizers, it will rapidly undergo ammonification reaction, resulting in melting and limited use.

However, 51% of China's grain production comes from the contribution of chemical fertilizers, and the two cannot be combined organ

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