CN202773573U - Warming system for strong seedling raising of tobacco leaves through float breeding - Google Patents
Warming system for strong seedling raising of tobacco leaves through float breeding Download PDFInfo
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- CN202773573U CN202773573U CN2012205205964U CN201220520596U CN202773573U CN 202773573 U CN202773573 U CN 202773573U CN 2012205205964 U CN2012205205964 U CN 2012205205964U CN 201220520596 U CN201220520596 U CN 201220520596U CN 202773573 U CN202773573 U CN 202773573U
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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
Abstract
The utility model discloses a warming system for strong seedling raising of tobacco leaves through float breeding, which comprises a hot water unit, wherein a water outlet of the hot water unit is connected with a primary net water inlet of a water storage type heat exchange box through a pipe I, the pipe I for connecting the hot water unit with the primary net water inlet of the water storage type heat exchange box is provided with a primary net circulating pump, a primary net water outlet of the water storage type heat exchange box is connected with a water return gap of the hot water unit through a pipe II, a secondary net water outlet of the water storage type heat exchange box is connected with one end of a heat exchange coil in a nursery pond in a greenhouse through a pipe III, the pipe III for connecting the secondary net water outlet of the water storage type heat exchange box with one end of the heat exchange coil in the nursery pond is provided with a secondary net circulating pump, and the other end of the heat exchange coil is connected with a secondary net water return gap of the water storage type heat exchange box through a pipe IV. The warming system disclosed by the utility model is high in working efficiency, reliable in operation, high in heat energy utilization ratio, low in operation and maintenance costs, simple in coal adding of hot water units, low in requirements on operators, simple in operation, time-saving, and labor-saving.
Description
Technical field
The utility model relates to a kind of tobacco leaf floating seedlings strong seedling cultivation temperature-increasing system.
Background technology
Growing seedlings is one of key technology of leaf tobacco production, and cultivating of the right age strong sprout is to ensure that nourish and grow in cigarette strain land for growing field crops and ripe important foundation of gathering.The production because for a long time always impact of microthermal climate is grown seedlings causes the depauperation of cigarette seedling or necrosis, and transplanting time lags behind, and tobacco leaf planting is had a strong impact on.The concept that manually heats to the nursery pond booth has been proposed recent years, and adopt the multiple scheme that heats to do some application tests, facts have proved, adopt heat pump, resistance wire or directly heat other input and operation costs that heat mode such as nutrient solution very high, heat effect and operational reliability is very poor, do not have temperature-controlling system, can't extensively be suitable for.
The utility model content
The technical problems to be solved in the utility model is, overcomes the defects that prior art exists, and provides a kind of inputs and operating cost low, and the operational reliability height is durable in use, the tobacco leaf floating seedlings strong seedling cultivation temperature-increasing system that temperature control is effective.
The utility model solves its technical problem institute technical scheme: a kind of tobacco leaf floating seedlings strong seedling cultivation temperature-increasing system, comprise Hot water units, the delivery port of Hot water units links to each other with a secondary net water inlet of water storage type heat exchange case by the pipeline I, Hot water units is provided with a secondary net circulating pump with the pipeline I that a secondary net water inlet of water storage type heat exchange case links to each other, one secondary net delivery port of water storage type heat exchange case links to each other with the water return outlet of Hot water units by the pipeline II, the secondary network delivery port of water storage type heat exchange case by the pipeline III with place booth in heat exchange coil one end of nursery pond link to each other, the secondary network delivery port of water storage type heat exchange case is provided with the secondary network circulating pump with the pipeline III that heat exchange coil one end that places nursery pond links to each other, and the heat exchange coil other end links to each other with the secondary network water return outlet of water storage type heat exchange case by the pipeline IV;
Hot water units, pipeline I, water storage type heat exchange case, pipeline II consist of a circulatory system, are used for finishing the thermal cycle between Hot water units and the water storage type heat exchange case, and the heat delivery that Hot water units produces is carried out heat exchange to the water storage type heat exchange case.
Water storage type heat exchange case, pipeline III, heat exchange coil, pipeline IV consist of secondary circulation system, be used for finishing the thermal cycle between water storage type heat exchange case and the heat exchange coil, the heat delivery that produces in the water storage type heat exchange case is carried out heat exchange to heat exchange coil, heat seedling pond nutrient solution.
Described nursery pond bottom is provided with heat-insulation layer, and the heat-insulation layer top is provided with the plastic film coated layer of preventing water leakage, and heat exchange coil is located at the plastic film coated layer of preventing water leakage top, and heat exchange coil is fixed by fixed frame, and nutrient solution is housed in the nursery pond.
Further, described heat exchange coil material is the high composite of heat exchange efficiency, and thermal conductivity factor is at 0.8W/m.k-1.2 W/m.k.
Further, being used for fixedly, the fixed frame material of heat exchange coil is the PVC material.
Further, described booth quantity can be more than two, nursery pond quantity in each booth also can be more than two, also be provided with the Thermoregulation distributor on the secondary network delivery port of water storage type heat exchange case and the pipeline III that heat exchange coil one end in each nursery pond links to each other, the Thermoregulation distributor is used for the heat energy that uniform distribution enters each nursery pond heat exchange coil, guarantees each nursery pond temperature uniformity.
Further, a described secondary net circulating pump and secondary network circulating pump are the vertical heat water circulating pump.
Further, described water storage type heat exchange case is provided with the automatic water supplement interface, the water storage type heat exchange case links to each other with the moisturizing outlet of water supply tank by the automatic water supplement interface, the external water supply network of water supply tank water inlet, between the water inlet that water supply tank moisturizing outlet is also connected to a secondary net circulating pump and the Hot water units delivery port the pipeline I on, an and close secondary net circulating pump position; Water supply tank moisturizing outlet is also connected on the pipeline III between the secondary network delivery port of secondary network circulating pump and water storage type heat exchange case, and close secondary network circulating pump position.
Further, the secondary network water outlet of described water storage type heat exchange case is provided with the thermometer dial plate that is loaded on the pipeline III, the secondary network water return outlet place of water storage type heat exchange case is provided with the thermometer dial plate that is loaded on the pipeline IV, water storage type heat exchange case bottom discharge mouth place is provided with the digital adjustment and control valve, and the digital adjustment and control valve forms the adjustment emergency system with water supply tank.
Further, described Hot water units is the normal-pressure fire coal hot-water boiler, the normal-pressure fire coal hot-water boiler comprises at least two-stage burner hearth, inboard wall of burner hearth at different levels are equipped with temperature sensor, burner hearth air inlet place is provided with fan blower (being used for regulating the air mass flow in the burner hearth), furnace front is provided with coal filling hole, every grade of burner hearth can independent regulation and control firepower, the regulation and control of burner hearth firepower at different levels specifically can be realized by each burner hearth coal amount of control and air mass flow, significantly improved heat energy efficiency, Energy Efficiency Ratio is up to more than 80%, and thermal energy conversion efficiency is near fuel oil and gas fired-boiler, economize on coal nearly 40% than traditional water heater, significantly reduce the operation cost of growing seedlings, high-efficient energy-saving environment friendly, safe and reliable, easy to use, automatic controlling level is high.
The water outlet of described Hot water units is provided with the temperature sensor that is loaded on the pipeline I, the water return outlet place of Hot water units is provided with the temperature sensor that is loaded on the pipeline II, the secondary network water outlet of water storage type heat exchange case is provided with the temperature sensor that is loaded on the pipeline III, and the secondary network water return outlet place of water storage type heat exchange case is provided with the temperature sensor that is loaded on the pipeline IV; Be equipped with temperature sensor and humidity sensor inside and outside the described booth, be provided with temperature sensor in the nursery pond, each temperature sensor all links to each other with acquisition module with humidity sensor, acquisition module, control module and remote monitoring communication module all link to each other with main frame, control module links to each other with fan blower with digital adjustment and control valve, a secondary net circulating pump, secondary network circulating pump, and the remote monitoring communication module links to each other with remote supervisory and control(ling) equipment by network
, temperature sensor, humidity sensor, digital adjustment and control valve, a secondary net circulating pump, secondary network circulating pump, fan blower, acquisition module, control module, remote monitoring communication module, main frame and remote supervisory and control(ling) equipment consist of the temperature-humidity monitoring control system jointly.
The nursery pond temp. and humidity that acquisition module detects each temperature sensor and humidity sensor, Inlet and outlet water temperature and the Hot water units fire box temperature isothermal humidity data information of each equipment, and be uploaded to main frame; Main frame is according to predefined target data, after the warm and humid data message that gathers is carried out analyzing and processing, by control module fan blower and the digital adjustment and control valve of one secondary net circulating pump, secondary network circulating pump, Hot water units are regulated and controlled, the final realization regulated and controlled the temperature in nutrition pond in the seedling raising greenhouse, the temperature in nutrition pond in the seedling raising greenhouse is reached and keeps predefined target data.
The heat exchange coil that the utility model adopts composite to make conducts heat to the nursery pond water body and heats, and heat exchange efficiency is high; Adopt the extensive central heating technology of high efficiency, be conducive to reduce input cost; Adopt the high energy efficiency ratio Hot water units, be conducive to reduce system operation cost; With digital collection and control technology, be applied to the collection of large tracts of land temperature, monitoring temperature, Thermoregulation, be conducive to guarantee large tracts of land nursery pond temperature equalization, improve automatic control level.
The utility model high efficiency, system is reliable, and heat utilization rate is high, and operation and maintenance cost are low.The Hot water units coal is simple, operating personnel is required low, simple to operate, time saving and energy saving.
The utility model combines heat supply and control together, has set up a central heating and Digital Control platform for growing seedlings.Use the utility model, can really realize cultivating the high stem strong sprout of " about seedling age 65 days, the high 10-12 of stem centimetre, stem girth 1.7-2.0 centimetre, the stem stalk is pliable and tough, well developed root system, delicate and pretty stalwartness ", strong sprout, rate reached more than 80%.
The utility model is applicable to the large-scale and medium-sized workshop of growing seedlings.
Description of drawings
Fig. 1 is the structural representation of the utility model one embodiment;
Among Fig. 1, zero expression Temperature and Relative Humidity of Indoor Air collection point, △ represents outdoor air humiture collection point, represents the temperature acquisition point.
Fig. 2 is nursery pond structural representation embodiment illustrated in fig. 1;
Fig. 3 temperature-humidity monitoring control system embodiment illustrated in fig. 1 structured flowchart.
Embodiment
The utility model is described in further detail below in conjunction with drawings and Examples.
Embodiment 1:
With reference to Fig. 1, present embodiment comprises Hot water units 1, the delivery port of Hot water units 1 links to each other with a secondary net water inlet of water storage type heat exchange case 3 by pipeline I 2, Hot water units 1 is provided with a secondary net circulating pump 4 with the pipeline I 2 that a secondary net water inlet of water storage type heat exchange case 3 links to each other, one secondary net delivery port of water storage type heat exchange case 3 links to each other with the water return outlet of Hot water units 1 by pipeline II 5, the secondary network delivery port of water storage type heat exchange case 3 by pipeline III 6 with place booth in heat exchange coil 7 one ends of nursery pond 10 link to each other, the secondary network delivery port of water storage type heat exchange case 3 is provided with secondary network circulating pump 8 with the pipeline III 6 that heat exchange coil 7 one ends that place nursery pond link to each other, and heat exchange coil 7 other ends link to each other with the secondary network water return outlet of water storage type heat exchange case 3 by pipeline IV 9.
Water storage type heat exchange case 3, pipeline III 6, heat exchange coil 7, pipeline IV 9 consist of secondary circulation system, be used for finishing the thermal cycle between water storage type heat exchange case 3 and the heat exchange coil 7, the heat delivery that produces in the water storage type heat exchange case 3 is carried out heat exchange to heat exchange coil 7, heating seedling pond nutrient solution.
A described secondary net circulating pump 4 and secondary network circulating pump 8 are the vertical heat water circulating pump.
In the present embodiment, described booth quantity is one, is provided with three nursery ponds (referring to Fig. 1) in the booth.
Also be provided with Thermoregulation distributor (not shown) on the secondary network delivery port of water storage type heat exchange case 3 and the pipeline III 6 that heat exchange coil 7 one ends in each nursery pond 10 link to each other, Thermoregulation distributor (not shown) is used for the heat energy that uniform distribution enters each nursery pond 10 heat exchange coil 7, guarantees each nursery pond temperature uniformity.
With reference to Fig. 2, described nursery pond 10 bottoms are provided with the heat-insulation layer 11 that places on the layer of ground soil 15, and heat-insulation layer 11 tops are provided with the plastic film coated layer 12 of preventing water leakage, and heat exchange coil 7 is located at the plastic film coated layer of preventing water leakage 12 top, heat exchange coil 7 is fixing by fixed frame 13, and nutrient solution 14 is housed in the nursery pond 10.
The utility model adopts Hot water units 1 heat supply, under the effect of a secondary net circulating pump 4, with the delivery in the Hot water units 1 in water storage type heat exchange case 3, carry out heat exchange with the cold water in the water storage type heat exchange case 3,3 cold water in the heating water storage type heat exchange case, enter hot water the water storage type heat exchange case 3 after heat exchange becomes cold water from Hot water units 1, secondary net delivery port from water storage type heat exchange case 3 flows out again, and then the water return outlet through Hot water units 1 is back to again heating in the Hot water units 1; Cold water in the water storage type heat exchange case 3 is after heat exchange becomes hot water, under the effect of secondary network circulating pump 8, constantly be delivered to the heat exchange coil 7 that places 10 ponds of growing seedlings in the booth, by the nutrient solution 14 in the heat exchange coil 7 heating nursery ponds 10, after hot water in the heat exchange coil 7 is finished thermal energy transfer, secondary network water return outlet by water storage type heat exchange case 3 flows back in the water storage type heat exchange case 3, can again heat.
Described heat exchange coil material is the high composite of heat exchange efficiency, and thermal conductivity factor is at 1.0 W/m.k.
Being used for fixedly, fixed frame 13 materials of heat exchange coil 7 are the PVC material.
The secondary network water outlet of described water storage type heat exchange case 3 is provided with the thermometer dial plate (not shown) that is loaded on the pipeline III 6, the secondary network water return outlet place of water storage type heat exchange case 3 is provided with the thermometer dial plate (not shown) that is loaded on the pipeline IV 9, water storage type heat exchange case 3 bottom discharge mouth places are provided with digital adjustment and control valve 19(referring to Fig. 3), the digital adjustment and control valve forms the adjustment emergency system with water supply tank.
Described water storage type heat exchange case 3 is provided with the automatic water supplement interface, water storage type heat exchange case 3 links to each other with the moisturizing outlet of water supply tank (not shown) by the automatic water supplement interface, the external water supply network of water supply tank water inlet, between the water inlet that water supply tank moisturizing outlet is also connected to a secondary net circulating pump 4 and Hot water units 1 delivery port pipeline I 2 on, an and close secondary net circulating pump 4 positions; Water supply tank moisturizing outlet is also connected on the pipeline III 6 between the secondary network delivery port of secondary network circulating pump 8 and water storage type heat exchange case 3, and close secondary network circulating pump 8 positions.
Described Hot water units 1 is the normal-pressure fire coal hot-water boiler, the normal-pressure fire coal hot-water boiler comprises the level Four burner hearth, inboard wall of burner hearth at different levels are equipped with temperature sensor, burner hearth air inlet place is provided with for the fan blower 20(that regulates the air mass flow in the burner hearth referring to Fig. 3), furnace front is provided with coal filling hole, every grade of burner hearth can independent regulation and control firepower, the regulation and control of burner hearth firepower at different levels specifically can be realized by each burner hearth coal amount of control and air mass flow, significantly improved heat energy efficiency, Energy Efficiency Ratio is up to more than 80%, thermal energy conversion efficiency is near fuel oil and gas fired-boiler, and it is nearly 40% to economize on coal than traditional water heater, significantly reduces the operation cost of growing seedlings, high-efficient energy-saving environment friendly, safe and reliable, easy to use, automatic controlling level is high.
The water outlet of described Hot water units 1 is provided with the temperature sensor that is loaded on the pipeline I 2, the water return outlet place of Hot water units 1 is provided with the temperature sensor that is loaded on the pipeline II 5, the secondary network water outlet of water storage type heat exchange case 3 is provided with the temperature sensor that is loaded on the pipeline III 6, and the secondary network water return outlet place of water storage type heat exchange case 3 is provided with the temperature sensor that is loaded on the pipeline IV 9; Be equipped with temperature sensor and humidity sensor inside and outside the described booth, be provided with temperature sensor in the nursery pond 10; With reference to Fig. 3, each temperature sensor all links to each other with acquisition module 16 with humidity sensor, acquisition module 16, control module 17 and remote monitoring communication module 22 all link to each other with main frame 18, control module 17 links to each other with fan blower 20 with digital adjustment and control valve 19, a secondary net circulating pump 4, secondary network circulating pump 8, and remote monitoring communication module 22 links to each other with remote supervisory and control(ling) equipment 21 by network
, temperature sensor, humidity sensor, digital adjustment and control valve 19, a secondary net circulating pump 4, secondary network circulating pump 8, fan blower 20, acquisition module 16, control module 17, remote monitoring communication module 22, main frame 18 and remote supervisory and control(ling) equipment 21 common formation temperature-humidity monitoring control system 23(are referring to Fig. 1).
The nursery pond temp. and humidity that 16 pairs of each temperature sensors of acquisition module and humidity sensor detect, the Inlet and outlet water temperature of each equipment and Hot water units fire box temperature isothermal humidity data information, and reach control module 17, by control module 17 the temp. and humidity data information acquisition is uploaded to main frame 18; Main frame 18 is according to predefined target data, after carrying out analyzing and processing by the warm and humid data message that control module 17 is sent, fan blower 20 and digital adjustment and control valve 19 by 18 pairs of secondary net circulating pumps 4 of control module, secondary network circulating pump 8, Hot water units 1 are regulated and are controlled, the final realization regulated and controlled the temperature in nutrition pond in the seedling raising greenhouse, the temperature in nutrition pond in the seedling raising greenhouse is reached and keeps predefined target data.
The utility model uses water body as the carrier of thermal energy transfer, the thermal energy transfer that Hot water units 1 is produced also exchanges to the nutrient solution 14 in the nursery pond, improve and keep the temperature range that grow seedling nutritional liquid is being set, artificial creation is also kept the suitable environment of a suitable tobacco seedling growth automatically, reaches the high stem purpose in strong sprout.
Claims (8)
1. tobacco leaf floating seedlings strong seedling cultivation temperature-increasing system, it is characterized in that, comprise Hot water units, the delivery port of Hot water units links to each other with a secondary net water inlet of water storage type heat exchange case by the pipeline I, Hot water units is provided with a secondary net circulating pump with the pipeline I that a secondary net water inlet of water storage type heat exchange case links to each other, one secondary net delivery port of water storage type heat exchange case links to each other with the water return outlet of Hot water units by the pipeline II, the secondary network delivery port of water storage type heat exchange case by the pipeline III with place booth in heat exchange coil one end of nursery pond link to each other, the secondary network delivery port of water storage type heat exchange case is provided with the secondary network circulating pump with the pipeline III that heat exchange coil one end that places nursery pond links to each other, and the heat exchange coil other end links to each other with the secondary network water return outlet of water storage type heat exchange case by the pipeline IV;
Hot water units, pipeline I, water storage type heat exchange case, pipeline II consist of a circulatory system;
Water storage type heat exchange case, pipeline III, heat exchange coil, pipeline IV consist of secondary circulation system.
2. tobacco leaf floating seedlings strong seedling cultivation temperature-increasing system according to claim 1, it is characterized in that, described nursery pond bottom is provided with heat-insulation layer, the heat-insulation layer top is provided with the plastic film coated layer of preventing water leakage, heat exchange coil is located at the plastic film coated layer of preventing water leakage top, heat exchange coil is fixed by fixed frame, and nutrient solution is housed in the nursery pond.
3. tobacco leaf floating seedlings strong seedling cultivation temperature-increasing system according to claim 1 and 2, it is characterized in that, described booth quantity is more than two, nursery pond quantity in each booth also is more than two, also is provided with the Thermoregulation distributor on the secondary network delivery port of water storage type heat exchange case and the pipeline III that heat exchange coil one end in each nursery pond links to each other.
4. tobacco leaf floating seedlings strong seedling cultivation temperature-increasing system according to claim 1 and 2 is characterized in that, a described secondary net circulating pump and secondary network circulating pump are the vertical heat water circulating pump.
5. tobacco leaf floating seedlings strong seedling cultivation temperature-increasing system according to claim 1 and 2, it is characterized in that, described water storage type heat exchange case is provided with the automatic water supplement interface, the water storage type heat exchange case links to each other with the moisturizing outlet of water supply tank by the automatic water supplement interface, the external water supply network of water supply tank water inlet, between the water inlet that water supply tank moisturizing outlet is also connected to a secondary net circulating pump and the Hot water units delivery port the pipeline I on, an and close secondary net circulating pump position; Water supply tank moisturizing outlet is also connected on the pipeline III between the secondary network delivery port of secondary network circulating pump and water storage type heat exchange case, and close secondary network circulating pump position.
6. tobacco leaf floating seedlings strong seedling cultivation temperature-increasing system according to claim 5, it is characterized in that, the secondary network water outlet of described water storage type heat exchange case is provided with the thermometer dial plate that is loaded on the pipeline III, the secondary network water return outlet place of water storage type heat exchange case is provided with the thermometer dial plate that is loaded on the pipeline IV, water storage type heat exchange case bottom discharge mouth place is provided with the digital adjustment and control valve, and the digital adjustment and control valve forms the adjustment emergency system with water supply tank.
7. tobacco leaf floating seedlings strong seedling cultivation temperature-increasing system according to claim 6, it is characterized in that, described Hot water units is the normal-pressure fire coal hot-water boiler, the normal-pressure fire coal hot-water boiler comprises at least two-stage burner hearth, inboard wall of burner hearth at different levels are equipped with temperature sensor, burner hearth air inlet place is provided with fan blower, and furnace front is provided with coal filling hole.
8. tobacco leaf floating seedlings strong seedling cultivation temperature-increasing system according to claim 7, it is characterized in that, the water outlet of described Hot water units is provided with the temperature sensor that is loaded on the pipeline I, the water return outlet place of Hot water units is provided with the temperature sensor that is loaded on the pipeline II, the secondary network water outlet of water storage type heat exchange case is provided with the temperature sensor that is loaded on the pipeline III, and the secondary network water return outlet place of water storage type heat exchange case is provided with the temperature sensor that is loaded on the pipeline IV; Be equipped with temperature sensor and humidity sensor inside and outside the described booth, also be provided with temperature sensor in the nursery pond, each temperature sensor all links to each other with acquisition module with humidity sensor, acquisition module, control module and remote monitoring communication module all link to each other with main frame, control module links to each other with fan blower with digital adjustment and control valve, a secondary net circulating pump, secondary network circulating pump, and the remote monitoring communication module links to each other with remote supervisory and control(ling) equipment by network
, temperature sensor, humidity sensor, digital adjustment and control valve, a secondary net circulating pump, secondary network circulating pump, fan blower, acquisition module, control module, remote monitoring communication module, main frame and remote supervisory and control(ling) equipment consist of the temperature-humidity monitoring control system jointly.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012205205964U CN202773573U (en) | 2012-10-12 | 2012-10-12 | Warming system for strong seedling raising of tobacco leaves through float breeding |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012205205964U CN202773573U (en) | 2012-10-12 | 2012-10-12 | Warming system for strong seedling raising of tobacco leaves through float breeding |
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| CN202773573U true CN202773573U (en) | 2013-03-13 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2012205205964U Expired - Fee Related CN202773573U (en) | 2012-10-12 | 2012-10-12 | Warming system for strong seedling raising of tobacco leaves through float breeding |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102845264A (en) * | 2012-10-12 | 2013-01-02 | 长沙瑞和数码科技有限公司 | Tobacco floating seedling strong seedling cultivation warming system |
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2012
- 2012-10-12 CN CN2012205205964U patent/CN202773573U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102845264A (en) * | 2012-10-12 | 2013-01-02 | 长沙瑞和数码科技有限公司 | Tobacco floating seedling strong seedling cultivation warming system |
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Granted publication date: 20130313 Termination date: 20211012 |