CN202680177U - Overhead controllable breeding fermentation bed with air cushion layer - Google Patents
Overhead controllable breeding fermentation bed with air cushion layer Download PDFInfo
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- CN202680177U CN202680177U CN 201220373614 CN201220373614U CN202680177U CN 202680177 U CN202680177 U CN 202680177U CN 201220373614 CN201220373614 CN 201220373614 CN 201220373614 U CN201220373614 U CN 201220373614U CN 202680177 U CN202680177 U CN 202680177U
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Abstract
The utility model belongs to the livestock breeding technology and facilities as well as equipment field and in particular relates to an overhead controllable breeding fermentation bed with an air cushion layer. The overhead controllable breeding fermentation bed is characterized in that the lower part of a fermentation cushion layer (1) is provided with a total-area air cushion layer or a livestock centralized excretion region is provided with a partial-region air cushion layer, wherein air is kept being naturally circulated in the air cushion layer or the air cushion layer is provided with a mechanical air supply system; the air cushion layer is composed of an impermeable terrace layer (6), an overhead layer (5), a mesh layer (4) and a graded material layer (3) in sequence from bottom to top; the bottom part of the overhead layer (5) is provided with a vent pipe (7) and the vent pipe (7) is connected with an air blower (10) of the mechanical air supply system; a temperature control sensor (12) in the fermentation cushion layer (1) and a probe of a humidity control sensor (13) are connected with a controller of the mechanical air supply system; and the controller is connected with the air blower (10). The overhead controllable breeding fermentation bed with the air cushion layer can comprehensively control a microorganism feces digestion atmosphere in a livestock breeding fermentation bed, makes the fermentation bed under an appropriate aerobiotic and aerobic state, enhances the adaptability of the fermentation bed to breeding conditions and breeding loads, optimizes the working state of the fermentation bed and prolongs the service life of the fermentation bed.
Description
Technical field
The utility model belongs to livestock and poultry cultivation technology and facility, apparatus field, is specifically related to a kind of overhead type band air cushion layer controlled culture fermenting bed.
Background technology
Modernization scale livestock and poultry cultivation when boosting productivity, has also brought a large amount of feces of livestock and poultry to be difficult to process, and causes thus serious environmental pollution; Chinese annual feces of livestock and poultry generation has reached 1,900,000,000 tons at present, has surpassed more than 2 times of industrial solid castoff discharge capacity; Existing various feces of livestock and poultry treatment technology mainly adopts the comprehensive utilization mode, utilizes the dirt of realization excrement to dissolve by farming is fertile, and part natural pond liquid has adopted processing standard discharge mode.Because the separating dry space from moist space measure is promoted, the livestock and poultry cultivation argol scope of dissolving is increased greatly, but natural pond liquid is owing to fertilizer efficiency and freight reason, the scope of dissolving is confined to around the treatment facility, relate to fertile balance and water balance problem that surrounding ground is dissolved, Term Fertilization mode problem, natural pond liquid are stored and are used fertile periodic problem, natural pond liquid to use custom and availability problem.Because China's large-scale cultivation degree improves year by year, the cultivation amount is large, and the rural culture added value is low.For a long time excrement dirt, natural pond liquid pollution problem can not get effective solution, become China and solve one of key issue of pollution of area source.
Low-carbon (LC), environmental protection micro-ecology fermentation bed technique are from external introducing, because this technology utilization fermentation bed course effectively decomposes livestock and poultry urine, ight soil, without the dirty directly discharging of excrement, there is not the dirty flushing water of excrement yet, service life 1-3, change bed course and directly get to the characteristics such as organic manure standard through simple process, get to a certain extent utilization and extention in China.
Fermentation bed livestock and poultry cultivation technology is considered to a kind of low-carbon (LC), environmental protection, little ecology, pollution-free, the organic farming livestock and poultry cultivation technology of approximate zero discharging almost, utilize our living resources of natural environment on every side, namely gather the multiple beneficial microorganism in the local soil, by cultivating, expand numerous to these microorganisms, be formed with female kind of microorganism of suitable vigor, by a certain percentage the female kind of microorganism, wood sawdust, husk and a certain amount of auxiliary material and activating agent mixing, fermentation formed organic bedding and padding again.Through in the pig house of particular design, insert above-mentioned organic bedding and padding and make microecological fermentation bedly, piglet is placed on the fermentation bed raises again.Pig all lives in above this organic bedding and padding from small to large, and the excreta pig manure of pig is urinated after the fermentation of beneficial microbe bacterium, is decomposed fully and transforms, and reaches odorless, tasteless, innoxious purpose.
But also there is some problems in fermentation bed, has the expert that the bed pathogen is killed statement into question; In addition, because the control of fermentation bed atmosphere is implemented by turning, increase in the fermentation bed water content, the poor aeration situation occurs, very easily cause local and all " dead bed " etc., the bed life-span shortens greatly, and " dead bed " also easily " mashed pig's feet " situation of overcast and rainy causing occurs in south.
On the other hand, some pigs have in the fixing local habits and customs of draining of pig house, fermentation bed standing part fecaluria is concentrated, other parts then seldom or can't contact pig manure urine, easily make the fermentation bed localised load overweight, affect the ferment effect of fermentation bed, form local dead bed, shorten fermentation bed service life.Sichuan Province's fermentation bed actual life is many not to reach the target in 3 year life-span of this technology about 1.5 ~ 2 years, a dead problem just occurs within the several months fermentation bed of super cultivation density or mismanagement sometimes.
Chinese patent CN101703033A provides a kind of method for building up of Pigpen fermentation bed, comprise the platform of will searching for food, be equipped with the fermentation bedding and padding fermentation vat, water system be arranged in order setting along the vertical direction in the clean road of strip pig house, the clean road of platform and pig house of wherein searching for food is adjacent.Along the parallel direction in the clean road of strip pig house, under the fermentation vat bottom face, arrange with the clean road of pig house with long ventilating duct.Outside that feed pipe is arranged on pig house is embedded in undergroundly summer in the water system, and feed pipe was arranged near the ventilating duct of fermentation vat and was embedded in the bedding and padding winter.But because ventilating duct only is located at the pig house middle part, the air channel is narrow, and is very little with the fermentation bed contact area, and evenly there is more dead angle in the gas distribution difficulty.This mode is relatively poor to larger area fermentation bed natural air inlet ventilation (non-blower fan) effect.
Summary of the invention
The purpose of this utility model is for for controlled poor, the fermentation bed short technical barrier in service life of fermentation bed fermentation process in the prior art, for people provide a kind of can comprehensive control livestock and poultry cultivation fermentation bed in the dirt of microorganism excrement clear up atmosphere, make fermentation bed can be in suitable aerobic and double oxygen condition, the forced fermentation bed is to the adaptability of cultivating condition, cultivation load, optimize the duty of fermentation bed, a kind of overhead type band air cushion layer that prolongs fermentation bed service life is controlled culture fermenting bed.
The purpose of this utility model realizes by following technical proposals.
The controlled culture fermenting bed method for building up of overhead type band air cushion layer of the present utility model, in fermentation bed course 1 bottom a gross area air cushion layer to be set or at livestock centralized discharge region division subregion air cushion layer, keep the air natural circulation in the air cushion layer, (realize gravity-flow ventilation; ) or by the mechanical air supply forced air supply.
During above-mentioned air cushion layer configuration emchanical air supply system, supply air system is established control system can be set, and (such as sequential programmable controller or PLC controller) is by the temperature of fermentation bed inside, the operation of appropriateness probe control emchanical air supply system.
Above-mentioned air cushion layer adopts subdivision control and multiple-unit control to join, as: take each pigsty as a unit, subregion adopts pipeline to connect multiple-unit simultaneously, controls with valve.
Overhead type band air cushion layer of the present utility model is controlled culture fermenting bed, is made of the gravel layer of fermentation bed course 1 and fermentation bed course 1 below and/or boulder bed and/or stalk layer and/or brown bed course, better adopts graded gravel layer, grating cobble loaded filter.
The utility model overhead type band air cushion layer is controlled culture fermenting bed, being characterized in fermenting, bed course 1 bottom is provided with built on stilts air cushion layer that a gross area band supports or at the built on stilts air cushion layer in the subregion that livestock centralized discharge region division has a band to support, air cushion layer is from bottom to up successively by antiseepage terrace layer 6, Stilt layer 5, stratum reticulare 4, graded material layer 3, and the fermentation bed bed course 1 that namely ferments is directly laid on top.
Increase ventilative separation layer 2 between the controlled culture fermenting bed fermentation bed course 1 of above-mentioned overhead type band air cushion layer and the graded material layer 3.
Above-mentioned Stilt layer 5 bottoms arrange ventilation duct 7.Ventilation duct 7 can adopt the formula of being arranged in parallel, grid type or alternate manner to arrange.Also air guide vertical tube 8 can be set in direction perpendicular to the ground, pipe end is provided with transfers wind locking head 9, regulates intake volume.
Above-mentioned overhead type can adopt the natural ventilation system configuration, when the configuration emchanical air supply system, can adopt according to demand single unit and the multiple-unit air-supply mode air feed that combines, consist of ventilating system by blower fan 10 and control system (sequential programmable controller or PLC controller), temperaturecontrol sensor 12, the probe of humidity control sensor 13 is positioned at fermentation bed course 1, one end then links to each other with control system such as sequential programmable controller or PLC controller, the other end of control system such as programmable controller or PLC controller and blower fan 10 join, and realize fermentation bed control by keying and the air intake valve of control blower fan 10.Air-tightness was good after the built on stilts air cushion layer of mechanical air supply mode required to close the mouth of pipe.
The technical solution of the utility model is that the designer gropes to create out by repeatedly practising, controlled for improve existing livestock and poultry cultivation deep-litter systems comprehensively, the technical scheme of the new science practicality that prolongs the fermentation bed life-span and develop, the utility model is by arranging air cushion layer and ventilation auxiliary equipment in the fermentation bed bottom, atmosphere is cleared up in the dirt of microorganism excrement in can comprehensive control livestock and poultry cultivation fermentation bed, make fermentation bed can be in suitable aerobic and double oxygen condition, the forced fermentation bed is to cultivating condition, the adaptability of cultivation load, realize optimizing the duty of fermentation bed, prolong the fermentation bed purpose in service life.Compared with prior art, the utlity model has following major function and technical characterstic:
1) control of fermentation bed atmosphere is strengthened and the control function
Normally use in order to keep the livestock and poultry fermentation bed, give good living environment of livestock and poultry, being conducive to simultaneously the excrement dirt clears up, contacting the fermentation bed surface with livestock needs dry and comfortable, but newspaper certain humidity in inside is to keep microbial reproduction and clearing up the excrement dirt, surface dry can be taken away moisture by surperficial air, also can inner ferment, and thermal current rises and takes away surface moisture.The fermentation bed flora of normal operation is tentatively cultivated identification show, take aerobic, facultative microbe as main, and a bad bed anaerobe can grow in a large number in the fermentation bed.Controlled fermentation bed ventilation air feed can maintain the beneficial microorganism normal growth, keeps the normal operation of fermentation bed.
To supply be to be replenished by bed face to the oxygen of microorganism in traditional fermentation bed, or provide by turning, airflow direction be by the top layer to percdation, a bottom oxygen content is successively decreased with the thickness increase in the bed.Air cushion layer is adjustable fermentation bed airflow direction is from down to life, the hot-air lifting that fermentation produces in the fermentation bed, and bottom air can replenish naturally, is embodied as the natural air feed of bed.
Usually fermentation bed is moved under the gravity-flow ventilation condition, can realize that fermentation bed normally moves.The mechanical enhancer air feed is short time raising air demand effectively, to starting the microorganism hot fermentation of the high fermentation bed of the content of organic matter, control temperature and humidity successful.
The natural ventilating status fermentation also can effectively solve the fermentation problem of the dirty load of the inhomogeneous excrement of fermentation bed, because the dirty skewness of excrement, the local microbial reproduction that organic matter is many is strong, quick heating, localized heat air-flow climbing speed is high, replenishes air fast, and effectively holding temperature and assurance fermentation carries out smoothly.And the dirty few local temperature of excrement is relatively low, in the bed air-flow lifting also slow, replenish gas naturally less.As long as control air inlet aperture just can effectively be incubated also carrying out smoothly of controlled fermentation.Reduced the intensity of turning.
Arrange according to the fermentation bed unit, can divide cultivation unit controls and full house control, subregion control is control mode preferably.
Can establish fermentation bed multi-point temp, humidity control sensor to the plant that has relatively high expectations, cooperate the operation of PLC control machine air feed facility, can adopt sequential programming Control and multi parameters control control mode.
2) fermentation bed controllable high-temperature sterilization
After fermentation bed is assembled certain organic matter, can adopt gravity-flow ventilation or the oxygen supply of positive mechanical draft type, can strengthen breeding aerobic in the equalizing bed, facultative microbe, improve very soon bed temperature (normal bed hot fermentation temperature be controlled at 50-70 ℃ better), effectively kill pathogen, cooperate turning to realize " purification " of fermentation bed surface layer and deep layer, this mode repeatedly Artificial Control is used, can effectively prevent the procreation of pathogen in the fermentation bed, prevent the generation of epidemic situation.
3) fermentation bed insulation
By closing and control each air inlet of a unit, can control air inflow, can regulate and control fermentation bed temperature in winter.
4) fermentation bed draining
The bottom air cushion layer possesses drain function simultaneously, the rainwater of roof leaking, and subterranean water level rises and enters the underground water of colony house, and outside a certain amount of flood flows into, and wears the water inlet of layer urine or other accident and all can get rid of smoothly, does not normally move and do not affect the fermentation bed.
5) fermentation bed reparation
Fermentation bed is had repair function, cooperate turning and air-supply, can repair because the excessive part of causing of cultivation load " dead bed " can effectively prevent spreading of part " dead bed " situation, suppress to cause the spreading of microorganism of dead bed.
6) possesses perfect compost function
The repertoire of the standby static aerobic fermentation of air cushion controlling fermentation bed accessory, can utilize empty maybe to need to finish the excrement dirt that non-fermentation bed cultivation (such as sow) cultivation produces with the useless bed that changes bedding and padding, these excrement dirts can be finished all processes of aerobic high-heat fermentation and after fermentation by mixing by a certain percentage with discarded bedding and padding or sawdust, powder of straw particle.Can effectively realize livestock excrement composting, agricultural wastes compost, sludge composting, house refuse organic matter compost.But should be noted that it is that the compost zone must the strict requirement of satisfying epidemic prevention.
Major advantage and contrast see the following form:
| Project and content | Air-cushion type controlling fermentation bed | The traditional zymotic bed | Fermentation bed patent CN101703033A | Remarks |
| The fermentation bed air feed | All standing, air feed is good | Poor | Local air feed | ? |
| The control of fermentation bed growth of microorganism | Comprehensively control, controllability is good | A little less than controlled | Possess control ability is arranged | ? |
| The fermentation bed high-temperature control | Control well | Be difficult to control | There is control ability the part | ? |
| The artificial aerobic fermentation that starts fast | The region-wide realization | Be difficult to realize | The part can be realized | ? |
| The fermentation bed life-span | Long | Short | Longer | ? |
| Prevent " dead bed " | Region-wide control | Control is difficult | Local controlled, most of zone is difficult to control | ? |
| Insulation | Full unit is controlled, effective | Good, uncontrollable | Local controlled | ? |
| The caloric disease pathogenic microorganism is killed control evaluation | Good, controlled | Effect is arranged, and control is difficult | There is control ability the part | ? |
| Drain function | Good, lower floor's bedding and padding are not affected by water | Draining is difficult, and lower floor's bedding and padding can be soaked | But draining, or the possibility that exists lower part bedding and padding to be soaked | ? |
| The fermentation bed SECO | Possess | Do not possess | Do not possess | ? |
| The programme-control of fermentation bed multi-parameter | Possess | Do not possess | Do not possess | ? |
| Control range and mode | The cultivation unit controls, full house control | Uncontrollable | Full house control can not realize Partial controll | ? |
| The compost function | Possesses the static aerobic of improving compost function | Simple and easy compost | Incomplete aerobic compost | ? |
| Requirement of strength to turning | Lower | High | Higher | ? |
| Structure recycling situation | The air cushion layer recycling | Recycling | Recycling | ? |
Description of drawings:
Fig. 1 is the utility model overall structure schematic diagram.
Fig. 2 is the utility model plane arrangement structure schematic diagram.
Fig. 3 is the utility model fermentation bed partial structurtes schematic diagrames.
Fig. 4 is the utility model fermentation bed air feed control system structural representation.
Among the figure: 1. bed course ferments; 2 ventilative separation layers; 3. graded material layer; 4. stratum reticulare; 5. Stilt layer; 6. antiseepage terrace layer; 7. ventilation duct; 8. air guide vertical tube; 9. transfer the wind locking head; 10. blower fan; 11, pig house ceiling; 12, temperaturecontrol sensor; 13, humidity control sensor; 14, pig house passageway; 15. pig house; 16. pig house column; 17, support big and heavy stone.
Embodiment:
Further describe the utility model below by embodiment, the utility model is not limited only to
Described embodiment.
Shown in Fig. 1-4: the controlled culture fermenting bed method for building up of overhead type band air cushion layer of the present utility model, in fermentation bed course 1 bottom a gross area air cushion layer to be set or at livestock centralized discharge region division subregion air cushion layer, keep the air natural circulation in the air cushion layer, realize gravity-flow ventilation; Perhaps by the mechanical air supply forced air supply; Or close under special circumstances air supply opening.Can keep the air natural circulation in the above-mentioned air cushion layer, for fermentation bed provides necessary air, also can pass through mechanical air supply, forced air supply, the quick aerobic intensification fermentation of force start microorganism also can be passed through larger ventilation, dehumidifying or reduction bed temperature, can realize intermittently air blowing function of fermentation process pressure, also can close air supply opening under special circumstances, usually can realize in the winter time the fermentation bed insulation.
Shown in Fig. 1-4: during the utility model air cushion layer configuration emchanical air supply system, supply air system arranges control system, such as sequential programmable controller or PLC controller (not providing among the figure), control system is located at the temperature of fermentation bed course 1 inside among fermentation bed such as the figure, the operation of appropriateness probe control emchanical air supply system by temperaturecontrol sensor 12, humidity control sensor 13, can be by sensor to humidity in the fermentation bed such as the PLC programming Control, temperature is accurately controlled.
Can adopt subdivision control and multiple-unit control to join during the utility model air cushion layer configuration emchanical air supply system, as: take each pigsty as a unit, subregion adopts pipeline to connect multiple-unit simultaneously, with valve control, with the air-supply of single unit and the multiple-unit air-supply requirement that makes things convenient for emchanical air supply system.To adopting the plant of great circle, can be divided in the bottom a plurality of separate air cushion static pressure districts, make things convenient for subregion control.
Shown in Fig. 1-4: the utility model overhead type band air cushion layer is controlled culture fermenting bed, graded material layer 3 by fermentation bed course 1 and fermentation bed course 1 below consists of, described graded material layer 3 refers to graded gravel layer and/or grating boulder bed and/or stalk layer and/or brown bed course, do not get rid of direct employing gravel layer and/or boulder bed yet, or adopt other to have the structural material of similar effect.
Such as Fig. 1. shown in Figure 4: overhead type band air cushion layer is controlled culture fermenting bed, that fermentation bed course 1 bottom is provided with the built on stilts air cushion layer of a gross area band support or makes somebody a mere figurehead air cushion layer in the subregion that livestock centralized discharge region division has a band to support, air cushion layer is from bottom to up successively by antiseepage terrace layer 6, Stilt layer 5(is by supporting big and heavy stone or perforate gripper shoe etc., as adopt the notched beam plate structure, the fluting plank, many versions such as corrosion resistant plate), stratum reticulare 4(stainless steel cloth, glass-fiber reinforced plastic grille, engineering plastics stratum reticulare etc.), graded material layer 3(can be gravel layer and/or boulder bed, but adopt graded gravel layer and/or grating cobble loaded filter or the brown bed course etc. better), the fermentation bed bed course 1 that namely ferments is directly laid on graded material layer 3 top.
Such as Fig. 1. shown in Figure 4: as to increase ventilative separation layer 2 between the controlled culture fermenting bed fermentation bed course 1 of overhead type band air cushion layer and the graded material layer 3, ventilative separation layer adopts geotextiles, brown pad, stalk layer or other gas permeable materials, adopts stalk layer, palm fibre also can save grating loaded filter 3 during pad.
As shown in Figure 1: the controlled culture fermenting bed graded material layer 3 of overhead type band air cushion layer better is the material layer that adopts 2 ~ 3 layers of different-grain diameter, material layer from top to bottom particle diameter becomes large gradually, particle size range is 8 ~ 100mm, material layer thickness is 200 ~ 400 mm, adopt other particle size range and material layer thickness but do not get rid of, also do not get rid of the positice ground effect that can play that adopts beyond ovum (gravel) stone and keep other shapes of certain voidage or the material of structure.Grating ovum (gravel) stone layer is set to be act as: both can prevent that ovum (gravel) stone layer from stopping up, and can guarantee the voidage that this layer maintenance is certain again.
As shown in Figure 4: above-mentioned overhead type band air cushion layer controlled culture fermenting bed, can adopt the natural ventilation system configuration, when the configuration emchanical air supply system, can adopt according to demand single unit and the multiple-unit air-supply mode air feed that combines, consist of ventilating system by blower fan 10 and control system (sequential programmable controller or PLC controller), temperaturecontrol sensor 12, the probe of humidity control sensor 13 is positioned at fermentation bed course 1, one end then links to each other with control system such as sequential programmable controller or PLC controller, the other end of control system such as programmable controller or PLC controller and blower fan 10 join, and realize fermentation bed control by keying and the air intake valve of control blower fan 10.Air-tightness was good after the built on stilts air cushion layer of mechanical air supply mode required to close the mouth of pipe.
As shown in Figure 1: ventilation duct 7 can adopt the grid type arrangement mode, also can adopt the formula of being arranged in parallel or alternate manner to arrange.Also air guide vertical tube 8 can be set in direction perpendicular to the ground, the pipe end of ventilation duct 7 and air guide vertical tube 8 is provided with transfers wind locking head 9, regulates intake volume.In the situation that needs, the natural air inlet mouth can or transfer the wind locking head to implement to close by valve, and the mechanical air supply allotment can be controlled by valve.The external pipeline in pond is not perforated pipe, and this routine pipe material is UPVC.
Claims (3)
1. an overhead type band air cushion layer is controlled culture fermenting bed, it is characterized in that fermenting, bed course (1) bottom is provided with built on stilts air cushion layer that a gross area band supports or at the built on stilts air cushion layer in the subregion that livestock centralized discharge region division has a band to support, air cushion layer is made of antiseepage terrace layer (6), Stilt layer (5), stratum reticulare (4), graded material layer (3) from bottom to up successively, Stilt layer (5) bottom is provided with ventilation duct (7), and ventilation duct (7) is connected with the blower fan (10) of emchanical air supply system.
2. overhead type band air cushion layer according to claim 1 is controlled culture fermenting bed, it is characterized in that described supply air system is provided with control system, the probe that the temperaturecontrol sensor (12), humidity that is positioned at fermentation bed course (1) controlled sensor (13) links to each other with the controller of emchanical air supply system, and controller links to each other with blower fan (10).
3. overhead type band air cushion layer according to claim 1 is controlled culture fermenting bed, it is characterized in that increasing between described fermentation bed course (1) and the graded material layer (3) ventilative separation layer (2).
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| Application Number | Priority Date | Filing Date | Title |
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| CN 201220373614 CN202680177U (en) | 2012-07-30 | 2012-07-30 | Overhead controllable breeding fermentation bed with air cushion layer |
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| CN 201220373614 CN202680177U (en) | 2012-07-30 | 2012-07-30 | Overhead controllable breeding fermentation bed with air cushion layer |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102986541A (en) * | 2012-07-30 | 2013-03-27 | 四川省环境保护科学研究院 | Establishing method of a controllable breeding fermentation bed with air cushion layer and fermentation bed |
| CN105123534A (en) * | 2015-08-19 | 2015-12-09 | 吉安乐乐生物科技有限公司 | Wet beneficial bacterium constant-temperature and constant-humidity breeding shed structure |
| CN109169309A (en) * | 2018-09-04 | 2019-01-11 | 六安市叶集区华建家庭农场 | A kind of pig farm ecologic breeding special environment protection fermentation bed |
-
2012
- 2012-07-30 CN CN 201220373614 patent/CN202680177U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102986541A (en) * | 2012-07-30 | 2013-03-27 | 四川省环境保护科学研究院 | Establishing method of a controllable breeding fermentation bed with air cushion layer and fermentation bed |
| CN102986541B (en) * | 2012-07-30 | 2015-05-20 | 四川省环境保护科学研究院 | Establishing method of a controllable breeding fermentation bed with air cushion layer and fermentation bed |
| CN105123534A (en) * | 2015-08-19 | 2015-12-09 | 吉安乐乐生物科技有限公司 | Wet beneficial bacterium constant-temperature and constant-humidity breeding shed structure |
| CN109169309A (en) * | 2018-09-04 | 2019-01-11 | 六安市叶集区华建家庭农场 | A kind of pig farm ecologic breeding special environment protection fermentation bed |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130123 Termination date: 20210730 |
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| CF01 | Termination of patent right due to non-payment of annual fee |