A phosphorus-rich high-efficiency compost product prepared by biological phosphorus accumulation and method thereof

A phosphorus-enriching and composting technology, applied in the field of organic solid waste recycling, can solve the problem that the available phosphorus content has not been effectively improved, and achieve the effects of improving bioavailability, realizing reuse, and improving adaptability

Active Publication Date: 2020-11-06
NORTHEAST AGRICULTURAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The invention provides a method for preparing phosphorus-enriched high-efficiency compost products through biological phosphorus accumulation to solve the problem that the available phosphorus content in compost products has not been effectively improved in the prior art

Method used

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  • A phosphorus-rich high-efficiency compost product prepared by biological phosphorus accumulation and method thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] Use solid waste such as household garbage and wood chips as compost materials, adjust the carbon-to-nitrogen ratio (C / N) to about 25, and the moisture content to be about 60%. Add phosphate rock powder with a mass ratio of 10%, and add Bacillus 30 -35%, Pseudomonas 15-20%, Weissella 5-10%, Mycobacterium 5-10%, Corynebacterium 10-15%, Enterococcus 5-10%, grams Phosphorus solubilis complex bacteria agent composed of 10-15% of Lebsiella and 5-10% of Streptomyces.

[0028] Three groups of different components were selected for processing:

[0029] The first group (A1) was inoculated with 3% phosphate-solubilizing bacteria compound bacterial agent at the initial stage of composting, and the materials were mixed evenly for aerobic composting;

[0030] Compared with A1, the second group (A2) added 10% biochar at the beginning of composting on the basis of inoculation of phosphate-solubilizing bacteria compound bacterial agent, and other treatment methods were consistent with ...

Embodiment 2

[0034] The A2 and A3 compost products among the embodiment 1 are applied to the wheat planting greenhouse with 40kg / ha compost phosphorus equal amount to carry out the experiment, and carry out simulated rainwater leaching every week, when wheat is harvested, detect current season wheat average output and The content of water-soluble phosphorus and other available active phosphorus in the soil changes. The results (Table 1) show that although the available active phosphorus content of the A2 phosphate fertilizer treatment is slightly higher than that of the A3 phosphate fertilizer treatment at the initial stage, there is little difference between the two phosphate fertilizer products on the average yield of wheat. It shows that the A3 treatment and the A2 treatment are close to the phosphorus fertility of wheat growth, but from the comparison of the available active phosphorus content of the final soil, it can be seen that the soil of the A3 compost product is significantly high...

Embodiment 3

[0040] A kind of method of the phosphorus-rich high-efficiency compost product prepared by biological phosphorus accumulation of the present invention comprises the following steps:

[0041] Step 1. Mix the organic solid waste with phosphate-solubilizing bacteria composite bacteria agent, phosphate rock powder and biochar evenly, and then perform aerobic composting treatment, wherein the phosphate rock powder, biochar and phosphorus-accumulating bacteria composite bacteria agent account for The dry weight ratios of the above-mentioned organic solid wastes are 5%, 5% and 1% respectively;

[0042] Step 2. After the aerobic composting is carried out to the cooling period, that is, the temperature drops to 45° C., add the phosphate-solubilizing bacteria compound bacterial agent again and stir and mix evenly. 3% of the mass of the dry weight of the material;

[0043] Step 3: When the aerobic composting is close to the decomposing period, that is, the temperature is lowered and mai...

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Abstract

The invention provides a phosphorus-rich efficient compost product prepared through biological phosphorus accumulation, and a method thereof, and relates to the field of organic solid waste reclamation. The method of the phosphorus-rich efficient compost product prepared through biological phosphorus accumulation comprises the following steps: 1, uniformly mixing organic solid waste, phosphate-solubilizing bacterium complex microbial inoculants, ground phosphate rock and charcoal; then, performing aerobic composting treatment; 2, when the aerobic composting is performed to a temperature reduction period, i.e., the temperature is lowered to 45 to 50 DEG C, adding the phosphate solubilizing bacterium complex microbial inoculants again; performing uniform mixing through stirring; 3, performing the aerobic composting to be near a thoroughly decomposed period, i.e., the period in which the temperature is reduced and is maintained at 40+ / -2 DEG C; inoculating the phosphorus-accumulating bacterium complex microbial inoculants; finally, obtaining the phosphorus-rich compost product. By using the microbial agent, the problems of weak phosphorus supply capability and low phosphorus element utilization rate of a phosphorus fertilizer product in the prior art can be effectively solved; meanwhile, the source utilization of the organic solid waste compost can be favorably realized.

Description

technical field [0001] The invention relates to the field of resource utilization of organic solid waste, in particular to a phosphorus-enriched high-efficiency compost product prepared by biological phosphorus accumulation and a method thereof. Background technique [0002] Phosphorus is one of the nutrient elements necessary for plant growth. In agricultural production, the phosphorus content of the soil is mainly increased by applying inorganic phosphorus fertilizers to meet the needs of crops; as the main raw material for the production of inorganic phosphorus fertilizers, phosphate rock powder is over-exploited. Therefore, the shortage of phosphate rock powder, that is, the phosphorus crisis may affect and threaten global food security in the future. How to improve the utilization efficiency of phosphate rock powder and develop new long-acting phosphate fertilizers has always been a research in agricultural production. the key of. [0003] Composting is a controllable ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C05F11/08
CPCC05B13/02C05D9/00C05F5/00C05F11/00C05F11/08C05F17/00
Inventor 赵越魏雨泉魏自民贾立明董英莉李艳杰
Owner NORTHEAST AGRICULTURAL UNIVERSITY
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