Method for improving degradation and aerobic composting of cow dung with earthworm

An aerobic composting and earthworm technology, which is applied in the agricultural field, can solve the problems of long decomposing time and complex factors, and achieve the effects of improving compost quality, improving composting efficiency, good environment and economic benefits.

Inactive Publication Date: 2014-03-19
KUNMING UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In order to overcome the shortcomings of complex factors and long decomposing time in the simple composting process of livestock and poultry manure

Method used

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  • Method for improving degradation and aerobic composting of cow dung with earthworm
  • Method for improving degradation and aerobic composting of cow dung with earthworm

Examples

Experimental program
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Effect test

Embodiment 1

[0017] During winter breeding, collect 2 tons of cow dung that has passed the high-temperature fermentation period and has a moisture content of 50%-60%, and put it into a 2m×2m×2.5m improved retting tank, covering the tank body, and the height of the pile is 0.4m. After the stacking is completed, about 8,000 earthworms of the Ohira No. 2 species are inoculated. After the earthworms have completely entered the heap, cover the surface of the heap with straw and water it thoroughly. During the breeding process, the heap samples were collected to test the pH value. The suitable pH range for earthworms to grow is between 6.5 and 8.5. If it is detected that the pH of the pile is not within the appropriate range, a certain dose of soda (NaHCO 3 ) solution adjustment, when it is higher than 8.5, adjust the pH with a low-concentration glacial acetic acid solution to adjust the pH to about 7.5-8.

[0018] The suitable growth temperature for earthworms is 10-25°C, and the temperature...

Embodiment 2

[0021] During summer breeding, collect 5 tons of cow dung that has passed the high-temperature fermentation period and has a moisture content of 65%-70%, and put it into a 5m×2.5m×2.5m improved composting tank to cover the tank body with a height of 0.4m. After the stacking is completed, inoculate about 15,000 earthworms of Daping No. 2 species. After the earthworms have completely entered the pile, cover the surface of the pile with straw and water thoroughly. During the breeding process, the heap samples were collected to test the pH value. The suitable pH range for earthworms to grow is between 6.5 and 8.5. If it is detected that the pH of the pile is not within the appropriate range, a certain dose of soda (NaHCO 3 ) solution adjustment, when it is higher than 8.5, adjust the pH with a low-concentration glacial acetic acid solution to adjust the pH to about 7.5-8.

[0022] The suitable growth temperature for earthworms is 10-25°C, and the temperature in summer is high, w...

Embodiment 3

[0026] Collect 5 tons of fresh cow dung, with a moisture content of about 80%, and put it into a 5m×2.5m×2.5m improved retting tank, covering the tank body, and the height of the pile is 0.4m. After stacking for about 15 days, monitor the temperature change of the pile. After the high temperature period of fermentation has passed, the temperature of the pile has dropped to about 20 degrees, and the earthworms can be inoculated when the moisture content is about 60%.

[0027] Inoculate about 15,000 earthworms of Daping No. 2 species. After the earthworms have completely entered the heap, cover the surface of the heap with straw and water thoroughly. Monitor the changes in the pH of the pile to maintain it at around 7.5-8.

[0028] Water once every 3 days in winter and twice a day in summer to keep the temperature of the heap at 20°C and the moisture content at about 60%. Pick out in time after the earthworms reproduce. About 40 days in summer and about 2 months in winter, the...

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Abstract

The invention relates to a method for improving degradation and aerobic composting of cow dung with earthworms and belongs to the field of agricultural techniques. The invention is characterized in that: the cow dung with a water content of 50% to 70% is collected after high-temperature fermentation stage and fed into a modified composting pond; the body of the composting pond is full of cow dung and the height of the cow dung pile is 0.4 m; 8000 to 15000 Daping No.2 earthworms are inoculated into the pond, and rice straws are coated on the surface of the pile after all the earthworms go into the pile and watered thoroughly; pile samples are collected for pH measurement during the culture process, and the range of pH suitable for earthworm growth is 6.5 to 8.5; after the inoculation is completed, the water is applied for 2 to 3 times every day to wet the rice straw coating, and the water content is controlled about 60% to about 70%; chickens are raised in chicken cages after the earthworms reproduce to a certain breeding amount; the reproduced earthworms are taken out of the pond and dried and pulverized to make fish feeds; the manures of the chickens and the manures of the earthworms are directly fed into the composting pond for composting, to increase the composting effect; and the reproduced earthworms are directly used to feed the chickens. Therefore, a complete agricultural ecological chain is formed.

Description

technical field [0001] The invention relates to an aerobic composting technology for earthworm-enhanced degradation of cow dung, which belongs to the field of agricultural technology. Background technique [0002] With the rapid development of rural animal husbandry, the impact of a large amount of livestock and poultry manure on the environment is becoming increasingly serious, especially in lake basins. Because there are still no relatively perfect facilities and methods for collecting and processing livestock and poultry manure, a large amount of livestock and poultry manure produced in rural areas every day is basically in a state of random piles. These random piles of livestock and poultry manure are rich in nutrients such as nitrogen and phosphorus, which are easily lost into the lake, causing eutrophication of the water body and destroying the ecological environment. [0003] As an important agricultural solid waste, livestock and poultry manure is only returned to t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F11/02C05F17/00
CPCY02W10/20Y02W30/40
Inventor 宁平瞿广飞黄凯贾丽娟
Owner KUNMING UNIV OF SCI & TECH
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