CN205030258U - Warmhouse booth arable layer geothermol power temperature humidity control device - Google Patents
Warmhouse booth arable layer geothermol power temperature humidity control device Download PDFInfo
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- CN205030258U CN205030258U CN201420779305.2U CN201420779305U CN205030258U CN 205030258 U CN205030258 U CN 205030258U CN 201420779305 U CN201420779305 U CN 201420779305U CN 205030258 U CN205030258 U CN 205030258U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A40/00—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production
- Y02A40/10—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production in agriculture
- Y02A40/25—Greenhouse technology, e.g. cooling systems therefor
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P60/00—Technologies relating to agriculture, livestock or agroalimentary industries
- Y02P60/14—Measures for saving energy, e.g. in green houses
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Abstract
The utility model discloses a warmhouse booth arable layer geothermol power temperature humidity control device, including polyvinyl chloride PVC cooling tube and fan, southern side 80 -100cm department coplanar sets up 2 perpendicular to the ground's of group the persons in charge side by side in the warmhouse booth, and wherein the east of 1 group is responsible for apart from east orientation wall body 1000 -1500mm, and other 1 group is responsible for the distance west in the west to wall body 1000 -1500mm, and in the north orientation of the person in charge's upper end through the return bend was close to the top in warmhouse booth and stretches to warmhouse booth, the port of person in charge's south orientation passed through the corner joint to the induced duct, being responsible for and linking to each other through fan and induced duct, make the induced duct stretch out it from the warmhouse booth in and outer and personally submit 90 jiaos of installations with ground, the fan is placed north and south in and is moved towards the interior southern side of big -arch shelter, two fan interval 25 -35m, ground direction and the fan be responsible for are responsible for and are communicated with each other and be 90 jiaos and parallel with ground, the person in charge's ground direction and arable layer be perpendicular to. The utility model discloses beneficial effect for air in the big -arch shelter and summer and winter soil temperature and humidity reach the demand that is suitable for agricultural crop growth that is suitable for, still have characteristics with low costs, energy -concerving and environment -protective.
Description
Technical field
The utility model belongs to agricultural technology field, specifically, relates to a kind of green house plow layer underground heat temp and humidity regulator.
Background technology
Solar thermal collector or solar water heater heating water is had to send into pipe network at present, make greenhouse temperature increasing, this kind of method is that water makes thermal-arrest medium, need water iterative cycles flowing in systems in which, the electric energy expending water pump is larger, costly, also there is the problems such as burn into leakage, be not suitable for spread in early stage; Also having is medium with solar energy, by solar thermal collector/plate, by heat storage to underground, makes greenhouse temperature increasing, the defect of these class methods be early investment costly, the later stage needs the problems such as professional safeguards, is not suitable for promoting the use of in northwestern economy low developed area.Although above green house achieves good effect in heating, there is the shortcoming that canopy humidity of heating is higher.
Utility model content
In order to overcome the defect existed in prior art, the utility model provides a kind of green house plow layer underground heat temp and humidity regulator, this device is the air exchange utilizing the kinetic energy of blower fan to carry out in canopy and outside canopy on the one hand, the heat capacity and less thermal conductivity that utilize soil large on the other hand, heat is upwards slowly transmitted from the underground that temperature is higher, topsoil temperature in booth is raised, and humidity reduces, and meets the principle of crop root to the demand of ground temperature.Its technical scheme is as follows:
A kind of green house plow layer underground heat temp and humidity regulator, comprises polyvinylchloride radiating tube and blower fan; In green house, southern side 80-100cm place same plane is arranged side by side 2 groups of supervisors perpendicular to ground (3), wherein east side supervisor (3) the distance east orientation body of wall 1000-1500mm of 1 group, the distance west, west side supervisor (3) of other 1 group is to body of wall 1000-1500mm, the upper end of supervisor (3) is close to the top in green house by the north orientation of bend pipe and stretches in green house, and the port of supervisor's (3) south orientation is connected on induced duct (5) by elbow; Supervisor (3) is connected with induced duct (5) by blower fan (1), induced duct is stretched out it in green house and be that 90 ° of angles are installed with ground, blower fan (1) is placed in the southern side in south-north direction booth, two blower fan interval 25-35m; Direction, ground and the blower fan of supervisor (3) are responsible for and are communicated and be 90 ° of angles and parallel to the ground, and direction, ground and the plow layer of being responsible for (3) are Vertical dimension; Supervisor (3) top and induced duct (5) fill catch (2) respectively, supervisor (3) ground is parallel to ground above ground floor in green house, pipe laying (4) in parallel be responsible for (3) ground to communicating and be Vertical dimension, pipe laying (4) in parallel installs 10-14 group, and each is organized pipe laying in parallel and forms a plow layer.
It should be noted that, described supervisor (3) adopts polyvinylchloride radiating tube, caliber 300-350mm; Described induced duct (5) adopts polyvinylchloride radiating tube, caliber 300-350mm, induced duct (5) cross-section center point and ground distance 2000-2065mm; Described pipe laying in parallel (4) adopts polyvinylchloride radiating tube, and the polyvinylchloride radiating tube that often group is 45-55mm by two calibers forms, spacing 200-250mm; Often organize pipe laying in parallel (4) spacing 400-600mm; The north orientation of described pipe laying in parallel (4) leads in green house by elbow perpendicular to ground, and Vertical dimension pipe range 500-600mm, apart from 350-450mm place, green house north side.
A kind of green house plow layer underground heat temp and humidity regulator, comprises polyvinylchloride radiating tube and blower fan.Blower fan is placed in the southern side in south-north direction booth, places 2 groups, and east side supervisor's distance east orientation body of wall 1000-1500mm, supervisor's distance west, west side, to body of wall 1000-1500mm, is responsible for as pvc pipe, caliber 300-350mm.Two blower fan interval 25-30m south orientation ports are connected on induced duct, are responsible for and are connected with induced duct by blower fan, induced duct is stretched out canopy in booth and installs in about 90 ° of angles with ground, ground distance 2000-2065mm in induced duct cross-section center point and canopy; Supervisor is stretched in canopy near canopy inner top by elbow upper end.Induced duct is pvc pipe, pipe 300-350mm.Supervisor is responsible for blower fan and communicates in 90 ° of angles in direction, ground, is Vertical dimension with plow layer in same level.Supervisor upper end and induced duct are respectively equipped with catch, and catch switch can realize the circulation of canopy inner air and outer air.Ground floor vertical direction in canopy, be parallel to ground and install 10-14 group parallel transistor and be responsible for ground and communicate, the pvc pipe that often group is 45-55mm by two calibers forms, spacing 200-250mm; Often organize distance of embedded pipe 400-600mm in parallel, each is organized pipe laying in parallel and forms a plow layer, and pipe laying north orientation in parallel, by elbow, apart from 350-450mm place, canopy north side, leads in canopy perpendicular to ground, Vertical dimension pipe range 500-600mm.
The beneficial effects of the utility model are air in booth and soil, reach the temp. and humidity being suitable for crop growth in summer and winter.
A kind of green house plow layer underground heat temperature and humidity regulation method, take air as heat-carrying agent, soil is heat storage medium, utilizes the sun and air flowing to accelerate heat energy between soil and air and exchange of moisture, by the kinetic energy apparatus of blower fan, heat energy and moisture is carried out circulation and exchanges in canopy with outside canopy.
By the heat exchange that the pipe laying in parallel in plow layer and soil carry out, on the one hand by heat storage in soil and pipeline.(requirement of planted crop to temp. and humidity is depended on) when daytime, temperature of shed was higher, when 13 point ~ 16 environmental temperature are higher, heat exchange two hours.Winter, start blower fan, open supervisor's catch, close induced duct catch and make pipe laying in parallel and soil in plow layer carry out heat exchange, and then make air in the accumulation of heat in soil and canopy form a microcirculation, this circulation in by thermal energy storage in the soil under plow layer and ground floor, the temp. and humidity of soil and air in canopy is reached and exchanges and balance, then according to the requirement of crop to temp. and humidity, regulate induced duct catch switch, if temp. and humidity is too high open catch, heat and moisture are discharged to outdoor; Summer, heat too much in soil and air and moisture are discharged to outdoor by startup blower fan, the catch opened on induced duct and supervisor, accumulation of heat in (catch closedown) plow layer at night and subsurface soil can be released slowly in air and can increase plow layer and temperature of shed, soil temperature raise time easily make soil water storage evaporate, and then increase canopy in night humidity.
The beneficial effects of the utility model:
1, this device utilizes solar energy, energy-saving and environmental protecting:
2, this device early investment cost is low, short construction period, and the time of being benefited is long;
3, effectively improve green house crop yield, have obvious economic benefit and social benefit.
In a word; it is medium that the utility model make use of solar energy, the kinetic energy of blower fan and the soil with larger heat capacity; the combination of three; both plant growth demand had been met; economize energy and protection of the environment to greatest extent again, also achieves the economic goal that crop yield and quality improve further.This technology input cost is little, short construction period, and the time of being benefited is long, has obvious economic benefit and social benefit.
Accompanying drawing explanation
Fig. 1 is the east-west cutaway view of a kind of green house plow layer underground heat temp and humidity regulator of the utility model;
Fig. 2 is a kind of green house plow layer of the utility model underground heat temp and humidity regulator planar structure schematic diagram;
Fig. 3 is temperature variations in a kind of green house plow layer of the utility model underground heat temp and humidity regulator two greenhouses in summer;
Fig. 4 is plow layer 15cm place soil temperature situation of change figure in a kind of green house plow layer underground heat temp and humidity regulator of the utility model two booth canopies in summer;
Fig. 5 is a kind of green house plow layer of the utility model underground heat temp and humidity regulator two greenhouse humidity situation of change figure in summer;
Fig. 6 is a kind of green house plow layer of the utility model underground heat temp and humidity regulator two green house temperature of shed situation of change figure in winter;
Fig. 7 is a kind of green house plow layer of the utility model underground heat temp and humidity regulator two green house plow layer 15cm place soil temperature situation of change figure in winter;
Fig. 8 is a kind of green house plow layer of the utility model underground heat temp and humidity regulator two green house canopy humidity situation of change figure in winter.
Embodiment
Below in conjunction with the drawings and specific embodiments, the technical solution of the utility model is described in more detail.
See figures.1.and.2, a kind of green house plow layer underground heat temp and humidity regulator, comprises polyvinylchloride radiating tube and blower fan.Same plane 2 groups of supervisors 3 perpendicular to ground placed side by side in southern side 80-100cm place in green house, east side supervisor 3 distance east orientation wall 1000-1500mm, west side supervisor 3 distance west is responsible for as pvc pipe to body of wall 1000-1500mm, pipe 300-350mm.Being responsible for 3 upper ends stretches in canopy by bend pipe north orientation near canopy inner top, is responsible for 3 south orientation ports and is connected on induced duct 5 by elbow.Supervisor 3 is connected with blower fan 1 by induced duct 5, makes induced duct 5 south orientation stretch out outside canopy, is that about 90 ° of angles are installed with ground, ground distance 2000-2065mm in induced duct 5 cross-section center point and canopy.Blower fan 1 is placed in the southern side in south-north direction booth, two blower fan interval 25-35m.Being responsible for 3 directions, ground and blower fan to be responsible for and to communicate in 90 ° of angles and parallel to the ground, is Vertical dimension with plow layer.Be responsible on 3 tops and induced duct 5 and fill catch 2 respectively, the switch of catch 2 can realize the adjustment of temp. and humidity inside and outside canopy.Parallel and ground above ground floor in canopy, with supervisor 3 ground to communicating and be that Vertical dimension installs 10-14 group pipe laying 4 in parallel, the pvc pipe that often group is 45-55mm by two calibers forms and spacing is 20-25cm; Often organize pipe laying 4 spacing 400-600mm in parallel, each is organized pipe laying in parallel and forms a plow layer, and pipe laying 4 north orientation in parallel leads in canopy by elbow is vertical with ground, Vertical dimension pipe range 500-600mm, distance 350-450mm place, canopy north side.
This system mainly utilizes the heat capacity and less thermal conductivity that soil is huge, and heat upwards with air is slowly transmitted from the soil that temperature is higher, makes in booth and topsoil temperature raises, and meets the demand of crop root gentle moisture over the ground.2 ~ 3 Fans can be settled in this system greenhouse, form the hot and cold air exchange in above and below ground of " 1 inhale 1 row ", to regulate the most thermophilic humidity needed for crop growth.
Summer, due to sun intense irradiation, temperature of shed in daytime higher (generally between 13 .-16), open blower fan, induced duct and supervisor's catch switch, make 1 Fans air draught, 1 Fans air draft, carries out the convective exchange of soil and air inside and outside green house, is exchanged in green house external environment by heat energy a certain amount of in soil and air by pipe laying in parallel and blower fan.
Moisture certain in green house, while carrying out the exchange of green house inner air and outer air, is also discharged to outdoor by blower fan, reduces the temp. and humidity in temperature green house in daytime in summer.Reduce plow layer and subsurface ground temperature temperature and soil moisture in Greenhouse in summer booth by the hot and cold air exchange convection current in this device above and below ground, also reduce because of in green house canopy and soil temperature and humidity too high and the crops injury that causes and the underproduction.At night, because daytime has carried out air exchange in green house, in the gentle green house in soil ground, temperature also has appropriateness to decline, and is more conducive to growing of crop.
In winter, when daytime, environmental temperature was higher, solar energy makes temperature in green house raise, and also exacerbates the evaporation of crop and soil moisture simultaneously, makes also humidity increase in green house.Now, open blower fan and supervisor's catch, make 1 Fans air draught, 1 Fans air draft, carry out in green house and air exchange between soil, under partial heat is stored into plow layer and ground floor by cross-ventilation and thermal conduction of soil, pipe laying north side in parallel Vertical dimension pipeline also accelerates air circulation.As temperature and humidity comparatively Gao Shike open induced duct catch, be discharged to outside green house.When nighttime ambient temperature is lower, in green house, temperature also decreases, and at this moment, closes pipe catch windward, opens supervisor's catch.Now, the heat slow releasing that plow layer and subsurface store, soil water storage is also evaporated simultaneously, to add in green house humidity at night, improve the temp. and humidity in plow layer and green house, on the one hand prevent winter greenhouse booth freeze injury problem, improve in green house on the other hand and the temperature of plow layer, be more suitable for crop and crop root to the demand of temp. and humidity.
As can be seen from Figure 3, when summer (July) environmental temperature higher (daytime 15 is sampled point), the contrast green house under the more same experimental condition of plow layer underground heat temp and humidity regulator green house plow layer soil temperature is low 2.29 DEG C; When environmental temperature reduces (6 is sampled point), it is low 1.68 DEG C that plow layer underground heat temp and humidity regulator green house plow layer soil temperature comparatively contrasts green house plow layer ground temperature temperature.Illustrate, when summer environment temperature is higher, this device reduces plow layer ground temperature.
As can be seen from Figure 4, when summer (July) environmental temperature reduces (be sampled point), green house temperature is contrasted under the more same experimental condition of temperature in plow layer underground heat temp and humidity regulator green house low 1.52 DEG C at 6; During environmental temperature higher (daytime 15 for for sampled point), in plow layer underground heat temp and humidity regulator green house, comparatively to contrast green house low 5.06 DEG C for temperature.Illustrate, when summer environment temperature is higher, this device reduces green house temperature of shed.
As can be seen from Figure 5, when summer (July), ambient humidity was higher (be sampled point), green house is contrasted under the more same experimental condition of plow layer underground heat temp and humidity regulator green house humidity low by 4.36% at 6; Time ambient humidity lower (daytime 15 is sampled point), plow layer underground heat temp and humidity regulator green house humidity compared with contrast green house low by 9.64%.Illustrate, summer, this device effectively can reduce green house canopy humidity.
As can be seen from Figure 6, when winter (December and January next year), environmental temperature was low (be sampled point), contrast green house temperature of shed under the more same experimental condition of temperature in plow layer underground heat temp and humidity regulator green house high 2.02 DEG C at 6; Time environmental temperature higher (daytime 15 is sampled point), plow layer underground heat temp and humidity regulator greenhouse green house temperature of shed compared with contrast green house high 1.92 DEG C.Illustrate, when winter environment temperature is low, this device adds temperature in green house.
As can be seen from Figure 7, when winter (December and January next year), environmental temperature was low (be sampled point), contrast green house under the more same experimental condition of plow layer 15cm place soil temperature in plow layer underground heat temp and humidity regulator green house high 2.28 DEG C at 6; Time environmental temperature higher (daytime 15 is sampled point), in plow layer underground heat temp and humidity regulator green house canopy plow layer ground temperature compared with contrast green house high 1.84 DEG C.Illustrate, when winter environment temperature is low, this device adds plow layer soil temperature temperature in green house.
As can be seen from Figure 8, when season in winter (December and January next year, 6 is sampled point), it is low by 4.53% that plow layer underground heat temp and humidity regulator green house humidity comparatively contrasts green house plow layer ground temperature temperature; When daytime 15 is for being sampled point, the contrast green house under the more same experimental condition of plow layer underground heat temp and humidity regulator green house humidity is low by 6.47%.Illustrate, winter, this device can reduce green house canopy humidity.
A kind of green house underground heat of the utility model temperature and humidity regulation system makes full use of solar energy, energy-saving and environmental protecting, can effectively improve green house crop yield, have obvious economic benefit and social benefit.By the application of this technology in production practices, reduce the injury that crop is caused because of temp. and humidity discomfort, improve the output of crops.In addition, it is little that system installs an input cost, short construction period, and the time of being benefited is long.The green concept of solar energy and soil thermal storage organically combined and is applied in production practices, meets the needs of plant growth, improving crop yield, increasing the economic well-being of workers and staff of peasant.Be suitable for vast rural area to promote, be especially applicable to the northwest sunshine time long, the area that intensity is large.
Be described below by way of specific embodiment
Embodiment 1
Green house south-north direction, 7500mm long from south to north, the long 60000mm of thing.In green house southern side plow layer in 800mm be provided with ground supervisor, described ground supervisor is also provided with and is in same plane and side by side perpendicular to its two groups of supervisors, described two groups of supervisors lay respectively at east side and west side, wherein be positioned at supervisor's distance east orientation body of wall 1500mm in east side, supervisor's distance west in west side is to body of wall 1500mm, the top of described two groups of supervisors is respectively equipped with bend pipe, and described bend pipe is close to the inner top of described green house, and wherein one end extends to described inner top.
Also be provided with two groups of elbows, one end of described two groups of elbows is connected on the sidewall of described two groups of supervisors, its other end is connected with one end of two groups of induced ducts respectively, it is outer and be 90 ° with ground that described two groups of induced duct other ends extend out to described green house, and the distance on the cross-section center point of described induced duct and ground is 2000mm ~ 2065mm, in described two groups of supervisor tops, in described two groups of induced ducts, be respectively equipped with catch; Also be respectively equipped with blower fan in described two groups of supervisors, described blower fan is positioned to be responsible for below corresponding elbow with described two groups.
12 groups of pipe layings in parallel are also provided with in described plow layer, the spacing often organizing pipe laying in parallel is 500mm, vertical connection is responsible for described ground in one end of described pipe laying in parallel, the other end is connected with one end of pipe laying elbow, the other end of described pipe laying elbow is provided with the vertical tube that pipe range is 550mm, and described vertical tube protrudes upward in described plow layer.
The above; be only the utility model preferably embodiment; protection domain of the present utility model is not limited thereto; anyly be familiar with those skilled in the art in the technical scope that the utility model discloses, the simple change of the technical scheme that can obtain apparently or equivalence are replaced and are all fallen in protection domain of the present utility model.
Claims (2)
1. a green house plow layer underground heat temp and humidity regulator, is characterized in that: comprise polyvinylchloride radiating tube and blower fan; In green house, southern side 80-100cm place same plane is arranged side by side 2 groups of supervisors perpendicular to ground (3), wherein east side supervisor (3) the distance east orientation body of wall 1000-1500mm of 1 group, the distance west, west side supervisor (3) of other 1 group is to body of wall 1000-1500mm, the upper end of supervisor (3) is close to the top in green house by the north orientation of bend pipe and stretches in green house, and the port of supervisor's (3) south orientation is connected on induced duct (5) by elbow; Supervisor (3) is connected with induced duct (5) by blower fan (1), induced duct is stretched out it in green house and be that 90 ° of angles are installed with ground, blower fan (1) is placed in the southern side in south-north direction booth, two blower fan interval 25-35m; Direction, ground and the blower fan of supervisor (3) are responsible for and are communicated and be 90 ° of angles and parallel to the ground, and direction, ground and the plow layer of being responsible for (3) are Vertical dimension; Supervisor (3) top and induced duct (5) fill catch (2) respectively, supervisor (3) ground is parallel to ground above ground floor in green house, pipe laying (4) in parallel be responsible for (3) ground to communicating and be Vertical dimension, pipe laying (4) in parallel installs 10-14 group, and each is organized pipe laying in parallel and forms a plow layer.
2. green house plow layer underground heat temp and humidity regulator according to claim 1, is characterized in that: described supervisor (3) adopts polyvinylchloride radiating tube, caliber 300-350mm; Described induced duct (5) adopts polyvinylchloride radiating tube, caliber 300-350mm, induced duct (5) cross-section center point and ground distance 2000-2065mm; Described pipe laying in parallel (4) adopts polyvinylchloride radiating tube, and the polyvinylchloride radiating tube that often group is 45-55mm by two calibers forms, spacing 200-250mm; Often organize pipe laying in parallel (4) spacing 400-600mm; The north orientation of described pipe laying in parallel (4) leads in green house by elbow perpendicular to ground, and Vertical dimension pipe range 500-600mm, apart from 350-450mm place, green house north side.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420779305.2U CN205030258U (en) | 2014-12-11 | 2014-12-11 | Warmhouse booth arable layer geothermol power temperature humidity control device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420779305.2U CN205030258U (en) | 2014-12-11 | 2014-12-11 | Warmhouse booth arable layer geothermol power temperature humidity control device |
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| CN205030258U true CN205030258U (en) | 2016-02-17 |
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| CN201420779305.2U Active CN205030258U (en) | 2014-12-11 | 2014-12-11 | Warmhouse booth arable layer geothermol power temperature humidity control device |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104396633A (en) * | 2014-12-11 | 2015-03-11 | 西北民族大学 | Geothermal temperature and humidity regulating device and method for greenhouse plowing layer |
| CN109964700A (en) * | 2019-04-25 | 2019-07-05 | 宁夏新起点现代农业装备科技有限公司 | A kind of compound crop cultivation heliogreenhouse of modernization |
-
2014
- 2014-12-11 CN CN201420779305.2U patent/CN205030258U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104396633A (en) * | 2014-12-11 | 2015-03-11 | 西北民族大学 | Geothermal temperature and humidity regulating device and method for greenhouse plowing layer |
| CN109964700A (en) * | 2019-04-25 | 2019-07-05 | 宁夏新起点现代农业装备科技有限公司 | A kind of compound crop cultivation heliogreenhouse of modernization |
| CN109964700B (en) * | 2019-04-25 | 2024-01-23 | 宁夏新起点现代农业装备科技有限公司 | Modernization compound type sunlight greenhouse for crop cultivation |
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