Method for promoting safe utilization of pig farm waste through earthworm-quick growing tree species

A technology of fast-growing tree species and waste, applied in the field of environmental biological treatment, can solve the problems of no safe treatment measures for plants, low total plant absorption, high concentration of heavy metals, etc., to shorten the maturity period, strong enrichment capacity, and low heavy metal content Effect

Inactive Publication Date: 2017-12-22
GUANGXI INST OF BOTANY THE CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The commonly used phytoremediation technology has problems such as low total plant absorption, long time, and no safe treatment measures for harvested plants.
In addition, the above technologies have problems such as high cost, poor economic benefit (or no economic benefit), and high concentration of heavy metals retained in the soil, which cannot fundamentally solve the heavy metal pollution caused by the agricultural use of pig manure

Method used

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  • Method for promoting safe utilization of pig farm waste through earthworm-quick growing tree species
  • Method for promoting safe utilization of pig farm waste through earthworm-quick growing tree species
  • Method for promoting safe utilization of pig farm waste through earthworm-quick growing tree species

Examples

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Effect test

Embodiment 1

[0032] A method for promoting the safe utilization of pig farm waste by using earthworm-fast-growing tree species, in which pig manure, biogas slurry and compound earthworms are applied seasonally in fast-growing woodlands, including the following steps:

[0033] (1) Planting fast-growing tree species, i.e. yellow beam wood, the fast-planting plant spacing is 5m, and the row spacing is 6m;

[0034] (2) Apply pig manure: dig a ring-shaped ditch at 50 cm away from the planted yellow beam wood, the depth of the ditch is 40 cm, and the pig manure that has been piled up for 20 days in the large-scale pig farm is evenly sprinkled into the ditch, and the amount of application is 7 kg, and then use digging The soil that came out filled the ditch;

[0035] (3) Application of biogas slurry: Lay pipelines for irrigating biogas slurry next to the yellow beam wood, and set drip irrigation ports on the left and right sides. The water output of the two drip irrigation ports is 15L per hour. ...

Embodiment 2

[0038] A method for promoting the safe utilization of pig farm waste by using earthworm-fast-growing tree species, in which pig manure, biogas slurry and compound earthworms are applied seasonally in fast-growing woodlands, including the following steps:

[0039] (1) Planting fast-growing tree species, i.e. yellow beam wood, the fast-planting plant spacing is 5m, and the row spacing is 6m;

[0040] (2) Apply pig manure: dig a ring-shaped ditch at 50 cm away from the planted yellow beam wood, the ditch depth is 20 cm, evenly sprinkle the pig manure that has been piled up for 10 days in the large-scale pig farm into the ditch, and the amount of application is 5 to 10 kg, and then Fill the ditch with the excavated soil;

[0041] (3) Application of biogas slurry: Lay pipelines for irrigating biogas slurry next to the yellow beam wood, and set drip irrigation ports on the left and right sides. The water output of the two drip irrigation ports is 15L per hour. The irrigation frequen...

Embodiment 3

[0044] A method for promoting the safe utilization of pig farm waste by using earthworm-fast-growing tree species, in which pig manure, biogas slurry and compound earthworms are applied seasonally in fast-growing woodlands, including the following steps:

[0045] (1) Planting fast-growing tree species, i.e. yellow beam wood, the fast-planting plant spacing is 5m, and the row spacing is 6m;

[0046] (2) Apply pig manure: dig a ring-shaped ditch at 50 cm from the planted yellow beam wood, the ditch depth is 60 cm, evenly sprinkle the pig manure that has been piled up for 30 days in the large-scale pig farm into the ditch, and the amount of application is 5 to 10 kg, and then Fill the ditch with the excavated soil;

[0047] (3) Application of biogas slurry: Lay pipelines for irrigating biogas slurry next to the yellow beam wood, and set drip irrigation ports on the left and right sides. The water output of the two drip irrigation ports is 15L per hour. The irrigation frequency is b...

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Abstract

The invention discloses a method for promoting safe utilization of pig farm waste through earthworm-quick growing tree species. Circulating application of pig manure, biogas slurry and composite earthworms is conducted in the quick growing forest land in different seasons, and the method comprises the following operation steps that firstly, the quick growing tree species are planted; secondly, the pig manure is applied, ring-shaped ditches are dug around the planted quick growing tree species, and the pig manure is scattered into the ditches; thirdly, biogas slurry is applied, and a pipeline for biogas slurry irrigation is laid beside the quick growing tree species, drop irrigation ports are formed in the left side and the right side, and the biogas slurry is subjected to drop scattering according to situations; and fourthly, the earthworms are applied, ring-shaped ditches are dug in an area where the pig manure is applied in the second step, the big earthworms and the small earthworms are evenly placed in the ditches, then soil returning and filling are conducted, and then the process can be completed. The anthocephalus macrophyllus planted through the method is vigorous in growth, the wood forming period is short, and economical and ecological benefits are obvious.

Description

technical field [0001] The invention belongs to the technical field of environmental biological treatment, and in particular relates to a method for promoting safe utilization of pig farm waste by utilizing earthworm-fast-growing tree species. Background technique [0002] Heavy metals (such as Cd, Pb, Hg, As, Cu, Zn, Mn, etc.) are one of the important components of feed additives for livestock and poultry breeding. After entering the animal body with the feed, most of the excess heavy metals accumulate in some organs except for some Elements are discharged into the natural environment with feces, posing a threat to the safety of soil, water, and crops. Biocomposting and bioleaching are currently the main technologies for heavy metal pollution control in solid waste. After the solid-liquid separation of livestock and poultry waste, heavy metals mainly exist in the solid phase. There are not many research reports on the control of heavy metal pollution in livestock and poult...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B09B3/00B09B5/00
CPCB09B3/00B09B5/00Y02W30/78
Inventor 史艳财
Owner GUANGXI INST OF BOTANY THE CHINESE ACAD OF SCI
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