CN112005872A - Crop soilless culture system and method - Google Patents
Crop soilless culture system and method Download PDFInfo
- Publication number
- CN112005872A CN112005872A CN202010752370.6A CN202010752370A CN112005872A CN 112005872 A CN112005872 A CN 112005872A CN 202010752370 A CN202010752370 A CN 202010752370A CN 112005872 A CN112005872 A CN 112005872A
- Authority
- CN
- China
- Prior art keywords
- nutrient solution
- dissolved oxygen
- crop
- preset
- liquid level
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Classifications
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01G—HORTICULTURE; CULTIVATION OF VEGETABLES, FLOWERS, RICE, FRUIT, VINES, HOPS OR SEAWEED; FORESTRY; WATERING
- A01G31/00—Soilless cultivation, e.g. hydroponics
- A01G31/02—Special apparatus therefor
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01G—HORTICULTURE; CULTIVATION OF VEGETABLES, FLOWERS, RICE, FRUIT, VINES, HOPS OR SEAWEED; FORESTRY; WATERING
- A01G31/00—Soilless cultivation, e.g. hydroponics
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
- G05D11/00—Control of flow ratio
- G05D11/02—Controlling ratio of two or more flows of fluid or fluent material
- G05D11/13—Controlling ratio of two or more flows of fluid or fluent material characterised by the use of electric means
- G05D11/131—Controlling ratio of two or more flows of fluid or fluent material characterised by the use of electric means by measuring the values related to the quantity of the individual components
-
- 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
- Y02P60/20—Reduction of greenhouse gas [GHG] emissions in agriculture, e.g. CO2
- Y02P60/21—Dinitrogen oxide [N2O], e.g. using aquaponics, hydroponics or efficiency measures
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Environmental Sciences (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Automation & Control Theory (AREA)
- Hydroponics (AREA)
Abstract
The embodiment of the invention provides a crop soilless culture system and a method, wherein the crop soilless culture system comprises: the cultivation tank is used for containing nutrient solution required by the growth of crops; the dissolved oxygen collecting device is used for collecting the dissolved oxygen content of the nutrient solution; the liquid level adjusting device is connected with the cultivation tank and used for controlling the liquid level of the nutrient solution in the cultivation tank to be maintained at different preset heights based on the dissolved oxygen content and switching between the different preset heights at preset time intervals; the invention has simple structure and low cost, can endow different nutrient absorption and metabolism functions to the root system of the crop based on the liquid level adjustment of the nutrient solution, ensures the normal absorption of the root system of the crop to water, fertilizer and oxygen, greatly improves the annual output rate of the soilless culture of the crop, realizes the high-quality and high-efficiency production of the crop, and is particularly suitable for the soilless culture of green leaf vegetables.
Description
Technical Field
The invention relates to the technical field of soilless culture, in particular to a crop soilless culture system and method.
Background
The green leaf vegetable is a fast-growing vegetable taking fresh green leaves, leafstalks or tender stems as edible parts. The green leaf vegetables are widely cultivated due to rich nutrition, crisp taste, short growth period, flexible harvesting and low management difficulty, and are one of the main vegetables cultivated in the facilities of China.
However, for the traditional planting of the green leaf vegetables, due to the fact that the number of planting crops is large, the planting soil needs to be subjected to heavy manual work operations such as loosening, leveling and ridging every time the crops are changed. With the optimization and adjustment of the agricultural industry structure, the suitable age of people engaged in facility agriculture is less and less, and the problem of labor shortage is increasingly serious. Meanwhile, as the planting mode is single and the multiple cropping index is high, in order to obtain high yield, farmers often blindly adopt the irrigation mode of 'large water and large fertilizer' according to experience, so that the problems of secondary salinization of soil, frequent occurrence of soil-borne diseases and insect pests and the like are caused, and accordingly, the yield and the quality of vegetables are influenced. On the contrary, for the soilless culture technology, the plants are directly planted in the nutrient solution, the constraint of natural soil on the growth of the plants is eliminated, the problems of secondary salinization of the soil and soil-borne diseases and insect pests are solved, the labor intensity of planting and producing green-leaf vegetables is reduced, the employment problem of rural old people or left-behind labor force is solved, and the soilless culture technology is one of the new development directions of modern agriculture.
Under the corresponding water culture condition of soilless culture, the root system of the crop needs to absorb water, nutrients and oxygen from the nutrient solution, so as to meet the requirements of the growth, development and metabolism of the crop. In particular, it should be noted that the dissolved oxygen content of the nutrient solution is critical to the respiration of the crop roots and is closely related to the temperature of the nutrient solution and the frequency of circulation. Because the production of facility agriculture is usually carried out according to the year round, in hot summer, the temperature of the nutrient solution can be increased along with the rise of the environmental temperature, the solubility of oxygen in the nutrient solution is in a negative correlation with the temperature of the nutrient solution, if the content of dissolved oxygen in the nutrient solution is too low, the growth of crop root systems can be inhibited, even the phenomena of root rot and yellow leaves of crops can be caused, and the growth of the crops can be seriously influenced. In the actual soilless culture process, the dissolved oxygen content in the nutrient solution is generally increased by increasing the circulation frequency of the nutrient solution, stirring and disturbing the nutrient solution, pumping air or oxygen into the nutrient solution and other implementation modes. Although the embodiments overcome the problem of oxygen deficiency of the nutrient solution due to temperature rise to a certain extent and can significantly increase the dissolved oxygen content of the nutrient solution, a large amount of electric energy is consumed correspondingly, the production cost is increased, and the application prospect is limited to a certain extent.
Disclosure of Invention
The embodiment of the invention provides a crop soilless culture system and a method, which are used for solving the problems that a large amount of electric energy needs to be consumed and the production cost is increased in the existing soilless culture technology for increasing the content of dissolved oxygen in a nutrient solution based on external equipment.
The embodiment of the invention provides a crop soilless culture system, which comprises: the cultivation tank is used for containing nutrient solution required by the growth of crops; the dissolved oxygen collecting device is used for collecting the dissolved oxygen content of the nutrient solution; and the liquid level adjusting device is connected with the cultivation tank and used for controlling the liquid level of the nutrient solution in the cultivation tank to be maintained at different preset heights based on the dissolved oxygen content and switching between the different preset heights at preset time intervals.
According to a soilless culture system of crops of one embodiment of the present invention, the liquid level regulating device includes: the liquid storage tank is used for storing the nutrient solution; the liquid pump is used for pumping the nutrient solution stored in the liquid storage tank into the cultivation tank; the overflow device is arranged in the cultivation tank and provided with a plurality of overflow ports corresponding to different preset heights, each overflow port is provided with a valve control device, and the overflow device is communicated with the liquid storage tank and is in communication connection with the dissolved oxygen collecting device.
According to an embodiment of the present invention, the crop soilless culture system, the overflow device includes: one end of the first overflow pipe is provided with an overflow port positioned at a first preset height in the cultivation tank; and one end of the second overflow pipe is provided with an overflow port which is positioned at a second preset height in the cultivation tank, the second overflow pipe and the other end of the first overflow pipe are communicated with the liquid storage tank, and the second preset height is lower than the first preset height.
According to the soilless culture system for crops, disclosed by the embodiment of the invention, the second overflow pipe is provided with the first control valve, and the first control valve is in communication connection with the dissolved oxygen collecting device.
According to the soilless culture system for crops, disclosed by the embodiment of the invention, the dissolved oxygen collecting device comprises a dissolved oxygen sensor which is installed at the bottom of the culture groove.
According to the soilless culture system for crops, disclosed by the embodiment of the invention, the notch of the culture groove is provided with the culture plate, and the culture plate is provided with a plurality of planting holes.
According to the soilless culture system for crops, provided by the embodiment of the invention, the culture tank is also provided with a liquid inlet and a liquid outlet, and the liquid outlet is provided with a second control valve.
The embodiment of the invention also provides a cultivation method of the soilless culture system for crops, which comprises the following steps: s1, collecting the dissolved oxygen content of the nutrient solution in the cultivation tank; and S2, controlling the liquid level of the nutrient solution in the cultivation tank to be maintained at different preset heights based on the dissolved oxygen content, and switching between the different preset heights at preset time intervals.
According to the cultivation method of one embodiment of the present invention, S2 further includes: when the dissolved oxygen content is detected to be higher than a dissolved oxygen preset value, controlling the liquid level of the nutrient solution to be maintained at a first preset height; when the dissolved oxygen content is detected to be lower than the dissolved oxygen preset value, controlling the liquid level of the nutrient solution to be maintained at a second preset height, and switching between the first preset height and the second preset height at preset time intervals; and the volume of the crop root system immersed by the nutrient solution at the first preset height is larger than that at the second preset height.
According to the cultivation method of one embodiment of the present invention, S1 further includes: determining the growth stage of the crop cultivated in the cultivation tank; accordingly, in S2, the liquid level at which the nutrient solution in the cultivation tank is maintained is controlled according to the growth stage of the crop.
According to the soilless culture system and the soilless culture method for the crops, the dissolved oxygen content of the nutrient solution in the culture tank is collected through the dissolved oxygen collecting device, the liquid level of the nutrient solution in the culture tank is controlled to be maintained at different preset heights through the liquid level adjusting device according to the dissolved oxygen content obtained through detection, and the liquid level is switched among the different preset heights at preset time intervals, so that different nutrition absorption and metabolism functions can be given to the root systems of the crops, specifically, when the environmental temperature is low, the dissolved oxygen content of the nutrient solution is high, the liquid level of the nutrient solution in the culture tank can be controlled to be maintained at the relatively high preset height, the root systems of the crops are fully immersed in the nutrient solution, and the water and nutrient absorption functions of the root systems of the crops are fully exerted; correspondingly, when ambient temperature is higher, the dissolved oxygen content of nutrient solution reduces, the liquid level of nutrient solution in the steerable cultivation inslot is maintained at the lower preset height relatively, increase the volume that the crop root system exposes in the air, be favorable to the crop root system to absorb the oxygen that utilizes in the air, in order to carry out the aerobic respiration of short-term, and satisfy self metabolic demand, here, switch between the preset height of difference with preset time interval through controlling the nutrient solution, in order to soak at regular time the crop root system that exposes in the air, in order to ensure its epidermic cell's activity, thereby the normal absorption of root system to water, fertilizer and oxygen of crop has been ensured.
Therefore, the soilless culture device has the advantages of being simple in structure and low in cost, effectively solving the problem that dissolved oxygen content in the nutrient solution is reduced due to temperature rise in the soilless culture, solving the problems of high energy consumption and high cost in the conventional implementation mode of increasing the dissolved oxygen content in the nutrient solution by increasing the circulation frequency of the nutrient solution, stirring and disturbing the nutrient solution, pumping air or oxygen into the nutrient solution and the like, greatly improving the annual output rate of soilless culture of crops, realizing high-quality and high-efficiency production of the crops, and being particularly suitable for soilless culture of green leaf vegetables.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
FIG. 1 is a schematic structural diagram of a soilless culture system for crops, which is provided by the embodiment of the invention;
fig. 2 is a schematic flow chart of a soilless culture system based on crops according to an embodiment of the present invention.
In the figure, 1, crop; 2. a cultivation trough; 3. cultivating a plate; 4. a dissolved oxygen collecting device; 5. a controller; 6. a liquid storage tank; 7. a liquid pump; 8. an overflow device; 81. a first overflow pipe; 82. a first control valve; 83. a second overflow tube; 9. a liquid inlet; 10. a liquid discharge port; 11. a second control valve; 12. a return line; 13. and a liquid injection pipe.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without any inventive step, are within the scope of the present invention.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Referring to fig. 1, the present embodiment provides a crop soilless culture system, including: a cultivation tank 2 for containing nutrient solution required by the growth of the crops 1; the dissolved oxygen collecting device 4 is used for collecting the dissolved oxygen content of the nutrient solution; the liquid level adjusting device is connected with the cultivation tank 2 and used for controlling the liquid level of the nutrient solution in the cultivation tank 2 to be maintained at different preset heights based on the dissolved oxygen content and switching between the different preset heights at preset time intervals.
Specifically, in the soilless culture system for crops shown in this embodiment, the dissolved oxygen content of the nutrient solution in the culture tank 2 is collected by the dissolved oxygen collecting device 4, the liquid level of the nutrient solution in the culture tank 2 is controlled by the liquid level adjusting device to be maintained at different preset heights according to the detected dissolved oxygen content, and the liquid level is switched between the different preset heights at preset time intervals, so that different nutrient absorption and metabolism functions can be given to the root system of the crops, specifically, when the environmental temperature is low, the dissolved oxygen content of the nutrient solution is high, the liquid level of the nutrient solution in the culture tank 2 can be controlled to be maintained at the relatively high preset height, so that the root system of the crops is fully immersed in the nutrient solution, and the function of the root system of the crops for absorbing moisture and nutrients is fully exerted; correspondingly, when ambient temperature is higher, the dissolved oxygen content of nutrient solution reduces, the liquid level of nutrient solution maintains at the lower preset height relatively in steerable cultivation groove 2, increase the volume that the crop root system exposes in the air, be favorable to the crop root system to absorb the oxygen that utilizes in the air, in order to carry out the aerobic respiration of short-term, and satisfy self metabolic demand, here, switch over between the preset height of difference with preset time interval through controlling the nutrient solution, in order to regularly soak the crop root system that exposes in the air, in order to ensure its epidermic cell's activity, avoid the long-time dehydration of crop root system and lead to its capillary root system withering, thereby the normal absorption of the root system of having ensured the crop to water, fertilizer and oxygen.
Therefore, the crop soilless culture system shown in the embodiment is simple in structure and low in cost, effectively solves the problem that dissolved oxygen content is reduced due to temperature rise of a nutrient solution in soilless culture, can greatly improve annual output rate of the crop soilless culture, realizes high-quality and high-efficiency production of crops, and can be particularly suitable for soilless culture of green-leaf vegetables.
It should be noted that the dissolved oxygen amount collecting device 4 shown in the present embodiment may be an online dissolved oxygen meter, a portable dissolved oxygen measuring device, and a dissolved oxygen sensor, which are well known in the art, and in the present embodiment, the dissolved oxygen amount collecting device 4 is preferably a wireless dissolved oxygen sensor, and a probe of the wireless dissolved oxygen sensor is installed at the bottom of the cultivation tank 2, so as to monitor the dissolved oxygen content of the nutrient solution in the cultivation tank 2 in real time.
The liquid level adjusting device shown in this embodiment may be a liquid injecting device, a liquid extracting device, a liquid discharging device, or a combination of these devices, which are known in the art to inject, extract, and discharge liquid, so as to achieve real-time adjustment of the liquid level in the cultivation tank 2, and is not limited in this respect.
Meanwhile, the dissolved oxygen collecting device 4 shown in the embodiment can be in communication connection with the controller 5, the controller 5 can be a known PLC (programmable logic controller), a single chip microcomputer or an industrial personal computer in the field, and the controller 5 can automatically control the liquid level adjusting device according to the collected dissolved oxygen content of the nutrient solution so as to control the liquid level of the nutrient solution in the cultivation tank 2 to be maintained at different preset heights and switch between the different preset heights at preset time intervals.
As shown in fig. 1, in one preferred embodiment, the liquid level adjusting device includes: the liquid storage tank 6 is used for storing nutrient solution; the liquid pump 7 is used for pumping the nutrient solution stored in the liquid storage tank 6 into the cultivation tank 2; overflow arrangement 8, overflow arrangement 8 install in cultivation groove 2, and overflow arrangement 8 has a plurality of overflow mouths that correspond with the different preset height, and every overflow mouth disposes the valve accuse device, and overflow arrangement 8 intercommunication liquid storage tank 6 to communication connection dissolved oxygen collection system 4.
Specifically, the liquid pump 7 shown in this embodiment is placed in the liquid storage tank 6, the pumping inlet of the liquid pump 7 draws the nutrient solution from the liquid storage tank 6, the pumping outlet of the liquid pump 7 is communicated with one end of the liquid injection pipe 13, the other end of the liquid injection pipe 13 is communicated with the liquid inlet 9 on the cultivation tank 2, the overflow device 8 and the liquid discharge port 10 of the cultivation tank 2 are both communicated with the liquid storage tank 6 through the liquid return pipeline 12, wherein the liquid inlet 9 is arranged at a notch close to the cultivation tank 2, the liquid discharge port 10 is arranged at the tank bottom of the cultivation tank 2, the second control valve 11 is provided with the second control valve 10, the second control valve 11 can be a wireless electromagnetic valve known in the art, and the open-close state of the second control valve 11 can be.
Meanwhile, the liquid storage tank 6 shown in the embodiment is arranged at a height lower than that of the cultivation tank 2, so that the nutrient solution overflowing through the corresponding overflow port of the overflow device 8 or the nutrient solution discharged through the liquid discharge port 10 automatically flows back into the liquid storage tank 6 through the liquid return pipeline 12 under the action of the self weight.
It should be noted that when a plurality of overflow ports are provided in the overflow device 8, each overflow port can be provided with a corresponding valve control device, so that the liquid level of the nutrient solution in the cultivation tank 2 can be controlled to reach a corresponding preset height by any overflow port alone. Therefore, the controller 5 can correspondingly control the opening and closing states of the valve control devices corresponding to the overflow ports according to the dissolved oxygen content of the collected nutrient solution, so that the liquid level of the nutrient solution in the cultivation tank 2 is maintained at different preset heights, and the liquid level is switched between the different preset heights at preset time intervals, so that the function of the crop root system is adaptively adjusted.
In one embodiment, the overflow means 8 comprises: a first overflow pipe 81, one end of the first overflow pipe 81 having an overflow port located at a first preset height in the cultivation tank 2; the second overflow pipe 83, the one end of second overflow pipe 83 has the overflow mouth that is located cultivation inslot 2 second preset height, and the second overflow pipe 83 all communicates liquid storage tank 6 through annotating liquid pipe 13 with the other end of first overflow pipe 81, and the second is preset the height and is less than first preset height. Here, first preset height can specifically be, and the nutrient solution can be with the liquid level height of the complete submergence of crop root system in cultivation groove 2, and second preset height can specifically be, and the nutrient solution can be with the liquid level height of the complete submergence of 30% to 60% of crop root system in cultivation groove 2, and further, at second preset height, the liquid level that the nutrient solution was located is to the 50% complete submergence of crop root system.
Because the second preset height is lower than the first preset height, and the liquid level of the nutrient solution completely submerges the root system of the crop at the first preset height, the first control valve 82 can be installed on the second overflow pipe 83, the corresponding valve control device can be no longer arranged on the first overflow pipe 81, the first control valve 82 can be a wireless electromagnetic valve known in the art, the first control valve 82 is in communication connection with the dissolved oxygen collecting device 4, so that when the dissolved oxygen content is detected to be higher, the first control valve 82 is closed, the liquid level of the nutrient solution can be automatically controlled by the first overflow pipe 81 to be maintained at the first preset height, and the liquid level of the nutrient solution completely submerges the root system of the crop; when detecting that dissolved oxygen content is lower, open first control valve 82, the liquid level of accessible second overflow pipe 83 control nutrient solution maintains at the second and predetermines the height, make the liquid level that the nutrient solution was located with the 50% complete submergence of crop root system, then, with the switching state of the first control valve 82 of default time interval control, make the liquid level of nutrient solution switch between first default height and second default height with default time interval, thereby avoid making the nutrient solution temperature rise because of the ambient temperature risees, lead to the crop oxygen deficiency, guarantee summer high temperature time festival, the normal growth of crop, guarantee the annual production of crop.
It should be noted that the controller 5 shown in the above embodiments may be wirelessly connected to the dissolved oxygen collecting device 4, the first control valve 82, and the second control valve 11 through WIFI, bluetooth, or other wireless methods.
Preferably, as shown in fig. 2, the present embodiment further provides a cultivation method of the soilless culture system for crops, including: s1, collecting the dissolved oxygen content of the nutrient solution in the cultivation tank; and S2, controlling the liquid level of the nutrient solution in the cultivation tank to be maintained at different preset heights based on the dissolved oxygen content, and switching between the different preset heights at preset time intervals.
Specifically, in this embodiment, the cultivation method shown in this embodiment will be specifically described by taking nutrient solution cultivation of green leaf vegetables as an example.
Firstly, in being fixed in each planting hole on the cultivation board with the seedling of green leafy dish, because the root system of green leafy dish in the seedling stage is less to the liquid level of nutrient solution in the steerable cultivation groove is maintained at first preset height, makes the root system of green leafy dish in this growth stage submerge in the nutrient solution for a long time, absorbs sufficient water and fertilizer from the nutrient solution and satisfies its growth demand, wherein, first preset height can be for the position apart from 8cm of the tank bottom of cultivation groove, the size of cultivation groove is, height 10cm, width 30cm, length 20 m.
Then, along with the gradual growth of the green leaf vegetables, the liquid level of the nutrient solution can be controlled by combining the dissolved oxygen content in the nutrient solution according to the change of the environmental temperature.
Specifically, in cold winter, the nutrient solution has a high dissolved oxygen content due to low temperature, and the dissolved oxygen content of the nutrient solution can be compared with a preset dissolved oxygen value, for example, the preset dissolved oxygen value is set to be 1.5mg L-1When the dissolved oxygen content of the nutrient solution is detected to be more than 1.5mg L-1When the cultivation tank is used, the first control valve is closed, the nutrient solution can be automatically controlled to be maintained at a first preset height through the first overflow pipe, and the first preset height can be 8cm away from the bottom of the cultivation tank, so that the root system of the green leaf vegetables can be completely immersed by the liquid level of the nutrient solution.
In hot summer, the nutrient solution has relatively low dissolved oxygen content due to high temperature, and the dissolved oxygen content of the nutrient solution is detected to be lower than 1.5mg L-1When the first control valve is opened, the nutrient solution can automatically flow back to the liquid storage tank through the second overflow pipe until the liquid level is finally maintained atThe second preset height can be 4cm away from the bottom of the cultivation tank, so that the root system of the green-leaf vegetable is exposed in the air by about 50% of the volume, and the root system of the green-leaf vegetable can absorb oxygen from the air to meet the requirement of self metabolism; then, at each preset time interval, for example: the preset time interval is 1 hour or 3 hours, and the first control valve is closed regularly, so that the liquid level of the nutrient solution is increased to a first preset height, the infiltration of the root system of the green leaf vegetables is completed, the root system is prevented from drying and lignification, the activity of the root system is kept, and then the first control valve is opened, so that the liquid level is reduced to a second preset height, the root system can absorb enough oxygen, and the normal operation of the metabolic activity of the root system is maintained. When the green-leaf vegetables are subjected to water culture production in spring or autumn, the liquid level of the green-leaf vegetables can be correspondingly controlled based on the dissolved oxygen content of the nutrient solution, and the description is omitted.
And finally, when the green-leaf vegetables are produced in one year, the cultivation tank can be cleaned and disinfected, the second control valve is opened, and residual nutrient solution in the cultivation tank is discharged through the liquid outlet for preparing water culture production operation of other crops.
Finally, it should be pointed out that, in the process of regulating and controlling the liquid level in the cultivation tank based on the dissolved oxygen content of the nutrient solution, the liquid pump can be controlled to continuously operate at a preset power so as to synchronously inject the nutrient solution with a preset flow into the cultivation tank, thereby not only being convenient for meeting the control requirement on the liquid level in the cultivation tank, but also being convenient for controlling the liquid level in the cultivation tank to be in a dynamic balance state, enhancing the contact probability of the nutrient solution and air, and correspondingly increasing the dissolved oxygen content of the nutrient solution; in addition, the growth stage of the crops cultivated in the cultivation tank can be predetermined, and the liquid level maintained by the nutrient solution in the cultivation tank can be controlled according to the growth stage of the crops.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (10)
1. A crop soilless culture system, comprising:
the cultivation tank is used for containing nutrient solution required by the growth of crops;
the dissolved oxygen collecting device is arranged in the cultivation tank and is used for collecting the dissolved oxygen content of the nutrient solution;
and the liquid level adjusting device is connected with the cultivation tank and used for controlling the liquid level of the nutrient solution in the cultivation tank to be maintained at different preset heights based on the dissolved oxygen content and switching between the different preset heights at preset time intervals.
2. The crop soilless culture system according to claim 1,
the liquid level adjusting device includes: the liquid storage tank is used for storing the nutrient solution;
the liquid pump is used for pumping the nutrient solution stored in the liquid storage tank into the cultivation tank;
the overflow device is arranged in the cultivation tank and provided with a plurality of overflow ports corresponding to different preset heights, each overflow port is provided with a valve control device, and the overflow device is communicated with the liquid storage tank and is in communication connection with the dissolved oxygen collecting device.
3. A crop soilless culture system according to claim 2 wherein the overflow means includes: one end of the first overflow pipe is provided with an overflow port positioned at a first preset height in the cultivation tank;
and one end of the second overflow pipe is provided with an overflow port which is positioned at a second preset height in the cultivation tank, the second overflow pipe and the other end of the first overflow pipe are communicated with the liquid storage tank, and the second preset height is lower than the first preset height.
4. The crop soilless culture system according to claim 3,
and a first control valve is arranged on the second overflow pipe, and the first control valve is in communication connection with the dissolved oxygen collecting device.
5. A soilless culture system for crops as claimed in any one of claims 1 to 4, wherein the said dissolved oxygen collecting means includes a dissolved oxygen sensor mounted at the bottom of the said culture groove.
6. A soilless culture system for crops as claimed in any one of claims 1 to 4 wherein the mouth of the said culture groove is fitted with a culture plate having a plurality of planting holes.
7. A system for soilless culture of crops as claimed in any one of claims 1 to 4, wherein the said culture tank is further provided with a liquid inlet and a liquid outlet, the said liquid outlet being provided with a second control valve.
8. A method of growing a soilless culture system for crops as claimed in any one of claims 1 to 7, including:
s1, collecting the dissolved oxygen content of the nutrient solution in the cultivation tank;
and S2, controlling the liquid level of the nutrient solution in the cultivation tank to be maintained at different preset heights based on the dissolved oxygen content, and switching between the different preset heights at preset time intervals.
9. The method of claim 8, wherein S2 further comprises: when the dissolved oxygen content is detected to be higher than a dissolved oxygen preset value, controlling the liquid level of the nutrient solution to be maintained at a first preset height;
when the dissolved oxygen content is detected to be lower than the dissolved oxygen preset value, controlling the liquid level of the nutrient solution to be maintained at a second preset height, and switching between the first preset height and the second preset height at preset time intervals;
and the volume of the crop root system immersed by the nutrient solution at the first preset height is larger than that at the second preset height.
10. The cultivation method as claimed in claim 8 or 9,
s1 further includes: determining the growth stage of the crop cultivated in the cultivation tank;
accordingly, in S2, the liquid level at which the nutrient solution in the cultivation tank is maintained is controlled according to the growth stage of the crop.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010752370.6A CN112005872A (en) | 2020-07-30 | 2020-07-30 | Crop soilless culture system and method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010752370.6A CN112005872A (en) | 2020-07-30 | 2020-07-30 | Crop soilless culture system and method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112005872A true CN112005872A (en) | 2020-12-01 |
Family
ID=73498608
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010752370.6A Pending CN112005872A (en) | 2020-07-30 | 2020-07-30 | Crop soilless culture system and method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112005872A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114868642A (en) * | 2022-05-18 | 2022-08-09 | 氨酯汀兰(南通)农业科技有限公司 | Soilless culture method |
| CN114982618A (en) * | 2022-04-24 | 2022-09-02 | 凯盛桐城现代智慧农业有限公司 | Soilless culture device |
| CN116076349A (en) * | 2023-04-10 | 2023-05-09 | 山东世伟工贸有限公司 | Greenhouse water tank |
| FR3134496A1 (en) * | 2022-04-15 | 2023-10-20 | Pret A Pousser | Hydroponic growing system includes flow guide for excess liquid |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202335280U (en) * | 2011-12-02 | 2012-07-18 | 河南科技大学 | Soilless culture device |
| US20160262324A1 (en) * | 2013-11-01 | 2016-09-15 | Kosuke Takahashi | Plant cultivation system, plant cultivation device, and plant cultivation method |
| CN107347614A (en) * | 2017-07-12 | 2017-11-17 | 宋佳璇 | water circulation system and method |
| CN107996385A (en) * | 2017-12-09 | 2018-05-08 | 佛山市高明区菜花园农业科技有限公司 | The hydroponic planting device that a kind of nutrient solution circulates |
| CN110235763A (en) * | 2018-03-08 | 2019-09-17 | 中国农业科学院农业环境与可持续发展研究所 | Nutrient solution culturing device |
-
2020
- 2020-07-30 CN CN202010752370.6A patent/CN112005872A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202335280U (en) * | 2011-12-02 | 2012-07-18 | 河南科技大学 | Soilless culture device |
| US20160262324A1 (en) * | 2013-11-01 | 2016-09-15 | Kosuke Takahashi | Plant cultivation system, plant cultivation device, and plant cultivation method |
| CN107347614A (en) * | 2017-07-12 | 2017-11-17 | 宋佳璇 | water circulation system and method |
| CN107996385A (en) * | 2017-12-09 | 2018-05-08 | 佛山市高明区菜花园农业科技有限公司 | The hydroponic planting device that a kind of nutrient solution circulates |
| CN110235763A (en) * | 2018-03-08 | 2019-09-17 | 中国农业科学院农业环境与可持续发展研究所 | Nutrient solution culturing device |
Non-Patent Citations (1)
| Title |
|---|
| 王久兴等: "《蔬菜无土栽培实用技术》", 30 September 2000, 中国农业大学出版社 * |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR3134496A1 (en) * | 2022-04-15 | 2023-10-20 | Pret A Pousser | Hydroponic growing system includes flow guide for excess liquid |
| CN114982618A (en) * | 2022-04-24 | 2022-09-02 | 凯盛桐城现代智慧农业有限公司 | Soilless culture device |
| CN114868642A (en) * | 2022-05-18 | 2022-08-09 | 氨酯汀兰(南通)农业科技有限公司 | Soilless culture method |
| CN116076349A (en) * | 2023-04-10 | 2023-05-09 | 山东世伟工贸有限公司 | Greenhouse water tank |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN112005872A (en) | Crop soilless culture system and method | |
| CN201752202U (en) | Automatic nutrient solution circulating system of miniature vegetable factory | |
| CN201260331Y (en) | Soilless culture apparatus | |
| KR100579937B1 (en) | Device for seed potato nutriculture and there of control method | |
| CN105850674B (en) | A kind of rice field oxygenation fills row's analog control system and method | |
| CN201624045U (en) | Industrial hole tray seedling culture bottom-surface irrigation device | |
| CN109601334A (en) | Liquid manure drip irrigation system based on Internet of Things | |
| CN102937557A (en) | Method and device for measuring moisture content of tray matrix | |
| CN209390675U (en) | A kind of seedling wood flower automatic irrigation fertilizer apparatus | |
| CN108834873A (en) | A kind of automation plant water planting system and method | |
| CN213819042U (en) | Lettuce soil condition monitoring and automatic supplementary irrigation device | |
| CN208490387U (en) | A kind of sweet osmanthus height of seedling survival rate cuttage and seedling culture device | |
| CN2904632Y (en) | Push-in type plant cultivation device | |
| KR100673601B1 (en) | Production method for seed potatoes | |
| CN211378908U (en) | Soil moisture content monitoring and reminding instrument | |
| CN206575785U (en) | A kind of seed is sprouted or seedling hydroponic device | |
| KR20060129986A (en) | Mass-production method for seed potatoes | |
| CN211718280U (en) | Irrigation and drainage system | |
| CN209788000U (en) | Municipal garden afforestation intelligence is grown seedlings and is supplied liquid device | |
| CN208940615U (en) | Light skeleton symbol intelligent irrigation fertilizer applicator for substrate culture | |
| CN102396409A (en) | Solar soil-less cultivation drop irrigation system and control method thereof | |
| CN204968499U (en) | Results integrated device is planted in chinese yam batch production | |
| CN110959520A (en) | Soilless culture solution preparation device and irrigation system | |
| CN205454585U (en) | It grows seedlings to float adds fertile ware | |
| CN219555887U (en) | Crop cultivation system for shallow liquid layer capillary water irrigation |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20201201 |