Method for promoting livestock and poultry manure compost maturity through microbial pretreatment

A livestock and poultry manure and pretreatment technology is applied in the treatment of biological organic parts, the preparation of organic fertilizers, nitrogen fertilizers, etc., to achieve the effects of improving abundance, low cost, and avoiding the influence of composting conditions.

Active Publication Date: 2019-12-31
JIANGSU ACADEMY OF AGRICULTURAL SCIENCES
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  • Abstract
  • Description
  • Claims
  • Application Information

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  • Method for promoting livestock and poultry manure compost maturity through microbial pretreatment
  • Method for promoting livestock and poultry manure compost maturity through microbial pretreatment
  • Method for promoting livestock and poultry manure compost maturity through microbial pretreatment

Examples

Experimental program
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Embodiment 1

[0038] The preparation of the liquid mycophyllum compact comprises the following steps:

[0039] (1) Activation culture: inoculate Glucophyllum compactus on a solid medium, and culture it statically at 28° C. for 5 days;

[0040] (2) Seed culture: wash the Mycophyllum thallus on the solid medium in step (1) with sterile physiological saline, vortex and oscillate for 5 minutes to obtain a thalline suspension, inoculate into 100ml liquid culture medium, and cultivate The conditions are 28°C shaking culture for 24 hours, the shaking speed is 200rpm, and the seed liquid is obtained;

[0041] (3) Expanded cultivation: inoculate the seed solution obtained in step (2) into 1L liquid culture solution by volume ratio of 10%, and carry out expanded cultivation. The cultivation condition is 28° C. shaking table shaking culture for 48 to 72 hours, and the shaking speed is 200 rpm , and then the obtained liquid inoculum of Glycophyllum compacta was stored at 4°C until use. The content of...

Embodiment 3

[0057] The present embodiment is comparative example, compost raw material composition and method and measuring method are all identical with embodiment 2, but omit microbial pretreatment step (being step (1) and step (2)) in embodiment 2, directly carry out conventional composting as Control group, with embodiment 2 as experimental group, compare the properties of wheat straw before and after pretreatment, and material temperature change, seed germination index, CO 2 Emissions, humus content and microbial populations.

[0058] The basic properties of this experimental example compost raw material are as follows in Table 1:

[0059] Table 1 Basic properties of compost raw materials

[0060]

[0061] Experimental results:

[0062] 1. Liquid chromatography-mass spectrometry (LC-MS) was used to determine the contents of various phenolic substances before and after pretreatment of wheat straw by Glyophyllum compactus. The results are shown in Table 2.

[0063] Table 2 Phenol...

Embodiment 4

[0088] This embodiment also uses the liquid bacterial agent of Myxophyllum compactus in Example 1 to carry out the method for rice straw pretreatment to promote composting of livestock and poultry manure, and the experimental group includes the following steps:

[0089] (1) Pretreatment: Add urea at a mass ratio of 2% to 10 kg of rice straw crushed to a length of 1 to 3 cm, adjust the water content to 80%, and the pH value to 7.5. By 4% mass ratio, the liquid inoculum of Myxophyllum compactus obtained in Example 1 was inoculated into 10 kg of rice straw, fully stirred, and packed into a 50L plastic fermentation tank for solid-state fermentation. The fermentation time was 5 days, and the fermentation temperature was 28° C.;

[0090] (2) Stockpiling: after the pretreatment, mix the pretreated straw and fresh chicken manure with a moisture content of 72% in a mass ratio of 1:5 using manual or mechanical methods, and adjust the moisture content to 55%. / N ratio is 25;

[0091] (3...

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Abstract

The invention discloses a method for promoting livestock and poultry manure compost maturity by microbial pretreatment. The method comprises the following steps: regulating the water content of crop straws to 60-80%, the pH value to 6-8 and a urea addition amount to 1-2%; then adding 1-5% by mass of a gloeophyllum trabeum liquid inoculant, and carrying out solid-state fermentation on the straws for 5 days; and uniformly mixing the pre-fermented straws and livestock and poultry manure according to the weight ratio of 1:3 to 1:6, and carrying out aerobic composting until the material is completely decomposed. Compared with conventional composting, the method provided by the invention can shorten the composting period by about 10 days, reduce a CO2 emission amount in the composting process by30-50%, and improve the humus content by 15-20%; the composting method can accelerate degradation and conversion of raw material organic matter, shorten the composting period, effectively reduce thecarbon loss, remarkably increase the humus content of a composting product, and improve the composting efficiency and the quality of the composting product; and the method has the advantages of simpleoperation, environmental friendliness and the like, and can be applied to composting enterprises for producing organic fertilizers by using different livestock and poultry manure and straw raw materials.

Description

technical field [0001] The invention relates to a method for microbial pretreatment to promote the composting of livestock and poultry manure, and belongs to the technical field of resource utilization of agricultural solid waste. Background technique [0002] With the rapid development of intensive agriculture in my country, the amount of agricultural organic solid waste such as crop straw and livestock manure is increasing and the processing difficulty is increasing. In 2016, the national output of major crop straws reached 984 million tons, and the output of livestock and poultry manure reached 3.9 billion tons. Unreasonable disposal of agricultural organic solid waste not only causes waste of resources, but also has become one of the main sources of agricultural non-point source pollution in my country. Aerobic composting after mixing straw with livestock and poultry manure is an important way to realize the reduction, treatment and resource utilization of agricultural ...

Claims

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Application Information

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IPC IPC(8): C05F17/00C05G1/00
CPCC05C9/00C05F17/00C05F3/00C05F11/00C05F11/08Y02W30/40
Inventor 朱宁靳红梅叶小梅奚永兰杜静孔祥平朱燕云
Owner JIANGSU ACADEMY OF AGRICULTURAL SCIENCES
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