Production method of slow-release and synergistic fucoidan nitrogen fertilizer containing Bacillus megaterium

Abstract

The invention relates to a production method of a bacillus megaterium-containing slow-release synergistic brown algae urea-ammonium mixed nitrogen fertilizer, comprising the following steps: grinding dried brown algae into powder, adding the brown algae powder into water according to a certain proportion, putting the solution into a fermentation tank, and sterilizing; preparation of a seed broth: screening to obtain a fermentation strain YIC-BM1 bacillus megaterium capable of generating cellulase, inoculating the fermentation strain into a liquid medium and culturing for a certain period of time; adding the seed broth into the fermentation tank, fermenting, adjusting fermentation condition, preserving for a certain period of time, adjusting fermentation condition once again and supplementing the seed broth, drying the fermentation broth after three times of adjustment so as to obtain bacillus megaterium inocula, mixing the inocula, crushed urea particles and an ammonium nitrogen fertilizer and granulating by a reaction type granulator, and drying at low temperature so as to obtain a finished product. The fermentation process is stable and controllable, and is suitable for large-scale production. The product contains alga extract and functional strain, has slow-release synergistic effect, and can enhance utilization rate of a nitrogenous fertilizer and improve quality and increase yield.

Description

technical field [0001] The invention relates to a method for producing fertilizer. Background technique [0002] my country's nitrogen fertilizer production and consumption rank first in the world, but the low fertilizer utilization rate is a major bottleneck restricting my country's agricultural development. According to the data, in 2011, the amount of nitrogen fertilizer applied in my country was 24 million tons. Due to the low utilization rate of fertilizer, the loss of nitrogen fertilizer through volatilization, leaching and runoff was huge. The direct loss of fertilizer was about 10 million tons, equivalent to about 34 billion yuan. At the same time, it will bring about the decline of soil fertility, the reduction of crop quality, and serious environmental pollution. Therefore, increasing the utilization rate of fertilizers and reducing the loss of fertilizers has received extensive attention from agricultural workers at home and abroad. [0003] According to differe...

AI Technical Summary

Problems solved by technology

Polymer-coated fertilizer is a typical and internationally recognized controlled-effect fertilizer. The basic feature of this type of fertilizer is that its nutrient release is well regulated, but it has high production costs, complicated processes, and unstable long-term performance. and other issues; modified (type) fertilizers are a type of non-coated fertilizers, which change the properties of water-soluble fertilizers by adopting certain manufacturing methods, or adding certain additives, or adding certain carriers, so as to control or delay fertilizer production. The purpose of nutrient release in

However, there are still problems that additives are easily decomposed and lost

[0004] The above two sustained-release principles are coated with chemical technology or chemically added, and both have certain chemical residues and pollution.

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