Phosphorus-rich efficient compost product prepared through biological phosphorus accumulation, and method thereof

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

Active Publication Date: 2017-05-10
NORTHEAST AGRICULTURAL UNIVERSITY
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[0005] The invention provides a method for preparing phosphorus-enriched high-efficiency compost products through biological phosphorus acc

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  • Phosphorus-rich efficient compost product prepared through biological phosphorus accumulation, and method thereof

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[0026] Example 1

[0027] Use solid wastes such as domestic garbage and wood chips as compost materials, adjust the carbon-nitrogen ratio (C / N) to about 25, the moisture content is about 60%, add phosphate rock powder with a mass ratio of 10%, and add Bacillus 30 -35%, Pseudomonas 15-20%, Weissella 5-10%, Mycobacteria 5-10%, Corynebacterium 10-15%, Enterococcus 5-10%, Gram Phosphate solubilizing bacteria compound inoculum composed of 10-15% of Lebsiella and 5-10% of Streptomyces.

[0028] Select three groups of different components to be processed separately:

[0029] The first group (A1) is inoculated with 3% phosphate solubilizing bacteria compound inoculation at the initial stage of composting, and the materials are mixed evenly for aerobic composting;

[0030] Compared with A1, the second group (A2) added 10% biochar at the initial stage of composting on the basis of the inoculation of phosphate solubilizing bacteria compound inoculum, and other treatment methods were the same as...

Example Embodiment

[0033] Example 2

[0034] The A2 and A3 compost products in Example 1 were applied in the same amount of 40kg / ha of compost phosphorus into the wheat-growing greenhouse for experiments, and simulated rainwater leaching was performed every week. When the wheat was harvested, the average output of wheat in the current season and The content of available active phosphorus such as water-soluble phosphorus in the soil changes. The results (Table 1) show that although the A2 phosphate fertilizer treatment has slightly higher available active phosphorus content than the A3 phosphate fertilizer treatment in the initial stage, the two phosphate fertilizer products have little difference in the average yield of wheat. It shows that the A3 treatment and A2 treatment have similar phosphorus fertility for wheat growth, but from the comparison of the final soil available active phosphorus content, it can be seen that the A3 compost product soil is significantly higher than the A2 compost applic...

Example Embodiment

[0039] Example 3

[0040] The method of the present invention for preparing phosphorus-rich high-efficiency compost product through biological phosphorus accumulation includes the following steps:

[0041] Step 1. The organic solid waste is mixed uniformly with the phosphate solubilizing bacteria composite inoculum, phosphate rock powder and biological charcoal, and then subjected to aerobic composting treatment, wherein the phosphate rock powder, biochar and phosphorus accumulating bacteria composite inoculation The dry weight ratio of the organic solid waste is 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, again add the phosphate solubilizing bacteria compound inoculum and stir and mix evenly, and the adding ratio of the phosphate solubilizing bacteria compound inoculum is the aerobic composting 3% of the dry weight of the material;

[0043] Step 3: After the aerobic composting...

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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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IPC IPC(8): C05G1/00
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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