CN113841550A

CN113841550A - Ozone water sterilization method and spraying system for facility agriculture

Info

Publication number: CN113841550A
Application number: CN202111107384.3A
Authority: CN
Inventors: 曹轩阁; 肖悦; 曹学宏; 王秀丽; 吴艳; 李佳凝
Original assignee: Beijing Tianyu Ecological Planting Co ltd
Current assignee: Beijing Tianyu Ecological Planting Co ltd
Priority date: 2021-09-22
Filing date: 2021-09-22
Publication date: 2021-12-28

Abstract

The invention discloses an ozone water sterilization method and a spraying system for facility agriculture, wherein the ozone water sterilization method for the facility agriculture comprises the following steps: pre-spraying before field planting; spraying when crops grow; harvesting and spraying crops; the utility model provides an ozone water spraying system that disinfects for in facility agriculture, includes oxygenerator, conveyor and spray set, and wherein, oxygenerator includes controlling means, oxygen pump, ozone generator, ejector and gas-liquid mixing pump, establishes ties in proper order through the pipeline between oxygen pump, ozone generator and the ejector, and ejector and gas-liquid mixing pump are parallelly connected each other. The ozone water sterilization method and the spraying system for facility agriculture utilize the excellent sterilization characteristic of ozone, and meanwhile, the decomposition product is oxygen which is harmless to human bodies, so that secondary pollution and drug resistance do not exist, the types and the quantity of used pesticides are reduced, pesticide residues and pollution are reduced, the quality of fruits and vegetables is improved, the planting environment is protected, and sustainable planting is realized.

Description

Ozone water sterilization method and spraying system for facility agriculture

Technical Field

The invention belongs to the technical field of crop sterilization, and particularly relates to an ozone water sterilization method and a spraying system for facility agriculture.

Background

In traditional agriculture, facility agriculture solves the problem that vegetables and fruits cannot be planted in winter, but simultaneously plant growth habit is disturbed, so that some germs, sclerotium, insect sources and the like which can not live in winter can survive in a shed and infect crops growing in the next season, and in order to ensure the growth of the crops, the germs and the like are usually killed by adopting pesticides. However, pathogenic bacteria and the like also generate drug resistance, so that diseases are increased, the number of used pesticides is increased, and the human diseases and strange diseases are frequently caused by the use of a large amount of pesticides, so that the natural environment is also worse.

The ecological safety attention degree of the government of China on agricultural production is improved to a new height, and the problems of agricultural sustainable development and agricultural product quality safety are also listed as key social construction systems.

In traditional agriculture, the killing germs are mainly pesticides, the pest and disease damage of crops is as many as thousands, the corresponding pesticides are more than tens of thousands, and for example, the diseases of solanaceous vegetables include physiological diseases, soil-borne diseases, air-borne diseases, virus diseases and the like. In particular, common physiological diseases include lobular disease, yellowing disease and gummosis. Soil-borne diseases mainly include blight and epidemic diseases. Among the airborne diseases are downy mildew, powdery mildew, etc., and also bacterial angular leaf spot, scab, sclerotinia, etc. Various bacteria are spread to plants by air flow, water splash, farming operation, insects and the like to infect and attack diseases.

Basically all sclerotia of germs, viruses and the like can pass winter in the facility greenhouse and can be attached to all environments of the greenhouse, meanwhile, the sclerotia are spread by means of watering, film dripping, farming operation, crop rotation, airflow and the like, the disease is fast to occur, the influence is large, the whole greenhouse is damaged in 1-2 days, and the loss is large.

Disclosure of Invention

The invention aims to provide an ozone water sterilization method and a spraying system for facility agriculture, which solve the problem of excessive pesticide use in traditional agriculture.

In order to achieve the purpose, the invention adopts the following technical scheme:

in one aspect, the present invention provides an ozone water sterilization method for use in facility agriculture, comprising the steps of:

pre-spraying before field planting;

spraying when crops grow;

harvesting and spraying crops;

wherein, the spraying during the crop growth comprises at least one of disease prevention spraying, disease treatment spraying and cooling spraying; the crop harvesting spraying comprises spraying before harvesting and spraying after harvesting.

In one possible design, the pre-spraying before the crop planting comprises the following steps:

spraying the fertilizer once in the morning and at night before field planting, mixing ozone for 12-18 minutes, and spraying ozone for 8-12 minutes.

In one possible design, the disease prevention spray comprises the following steps:

spraying once every 3-5 days at 6-8 o' clock in the evening, mixing ozone for 8-12 minutes, and spraying ozone for 8-12 minutes;

closing the shed for 8-12 minutes after spraying, and then opening the shed for ventilation to dry the leaf surfaces of the crops.

In one possible design, the disease treatment spray comprises the following steps:

spraying for two consecutive days, spraying once at 6-8 o' clock in the evening on the first day, mixing ozone for 18-22 minutes, closing the greenhouse, spraying ozone for 8-12 minutes, closing the greenhouse for 8-12 minutes, opening the greenhouse again for ventilation, and drying the leaf surfaces of the crops;

spraying once at 6-8 points earlier the next day, mixing ozone for 18-22 minutes, closing the greenhouse, spraying ozone for 8-12 minutes, closing the greenhouse for 8-12 minutes, opening the greenhouse again for ventilation, and drying the leaf surfaces of the crops;

spraying the solution once again at 6-8 o' clock in the evening.

In one possible design, the cooling spray comprises the following steps:

ozone is not required to be mixed, only water is sprayed, and the spraying time is 18-22 minutes.

In one possible design, the pre-harvest spray comprises the steps of:

spraying once a day before crop harvesting, mixing with ozone for 8-12 minutes, and spraying with ozone for 8-12 minutes;

when the day before crop harvest is cloudy, mixing ozone for 12-18 minutes, and spraying ozone for 2-4 minutes.

In one possible design, the post-harvest spray comprises the steps of:

spraying once after each harvest, mixing ozone for 12-18 minutes, closing the greenhouse, spraying ozone for 18-22 minutes, and keeping the closed greenhouse after the spraying is finished.

On the other hand, the invention provides an ozone water sterilization spraying system for facility agriculture, which comprises an oxygen generating device, a conveying device and a spraying device which are sequentially connected, wherein the oxygen generating device comprises a control device, an oxygen pump, an ozone generator, a jet device and a gas-liquid mixing pump;

the oxygen generating device also comprises a box body and a frame body positioned below the box body, wherein the control device, the oxygen pump and the ozone generator are all arranged in the box body, the ejector and the gas-liquid mixing pump are all arranged in the frame body, and the box body is provided with an air inlet adaptive to the oxygen pump.

In one possible design, the control device comprises a control board, a timer and a flowmeter, wherein the control board is electrically connected with the timer and the flowmeter, the control board is also provided with an ammeter, a voltmeter, an ozone switch and a pump body switch, at least respective indication parts of the timer, the flowmeter, the ammeter and the voltmeter are visible from the outside of the box body, and the ozone switch and the pump body switch are at least partially arranged outside the box body.

In one possible design, the conveying device comprises a water treatment device and a pump body which are sequentially connected, wherein a water inlet hole of the water treatment device is connected with a gas-liquid mixing pump, and a water outlet hole of the pump body is connected with a spraying device;

the spraying device comprises a main pipeline and a plurality of spraying pipelines, wherein a water inlet communicated with the pump body is formed in the main pipeline, a plurality of water outlets are formed in the main pipeline, the water inlet end of each spraying pipeline is communicated with the water outlet of the main pipeline, the water outlet end of each spraying pipeline extends into the facility greenhouse, a plurality of spray heads are arranged on the part, located in the facility greenhouse, of each spraying pipeline, and the water outlets, the spraying pipelines and the facility greenhouse are arranged in a one-to-one correspondence mode.

Has the advantages that:

1. ozone has excellent sterilization characteristics, meanwhile, the decomposition product is oxygen which is harmless to human bodies, secondary pollution and drug resistance do not exist, the variety and the number of used pesticides are reduced, and therefore, when the ozone is used for agricultural planting, a suitable method is found to be the second revolution of agriculture for safe production, the ozone is gradually promoted, the range is expanded, and the ozone can be better served to human beings.

2. Diseases are not judged. In facility agricultural planting, different diseases caused by different pathogenic bacteria are differentiated by farmers under many conditions, so that more and more medicines are used, but more and more serious conditions are treated, for example, the symptoms of angular leaf spot disease and downy mildew are similar, misdiagnosis and repeated medicine application are easy, sometimes, the diseases are not treated, and the medicine damage in plants is caused by more medicines.

3. The fruits and vegetables are used with more medicines, so that the taste is poor, the quality is poor, the economic benefit is weak, the number of the fruits and vegetables used with the medicines is reduced, the natural fruit fragrance is strong, and the economic value is high and is also loved by consumers. After ozone spraying sterilization, the picked fruits are kept fresh, the taste is good, the content of the emitted aromatic substances is higher, and the fruit fragrance is stronger.

4. Can be applied to a plurality of areas and varieties, has obvious effect, and simultaneously has low fruit and vegetable pesticide residue, good taste, less mildew and less loss.

Drawings

Fig. 1 is a flowchart of an ozone water sterilization method used in facility agriculture.

FIG. 2 is a line graph showing the change of the sterilization rate with the action time.

Fig. 3 is a schematic structural diagram of an ozone water sterilization spraying system used in facility agriculture.

FIG. 4 is a schematic diagram of an oxygen plant.

In the figure:

1. an oxygen generating device; 11. a control device; 12. an oxygen pump; 13. an ozone generator; 14. an ejector; 15. a gas-liquid mixing pump; 16. a box body; 17. a frame body; 101. a timer; 102. a flow meter; 103. an ammeter; 104. a voltmeter; 105. an ozone switch; 106. a pump body switch; 21. a water treatment device; 22. a pump body; 31. a main pipeline; 32. and (4) a spray pipeline.

Detailed Description

Example 1:

for the prevention and control of plant diseases and insect pests in the growth process of crops, pesticides are mainly used in traditional facility agriculture, and different medicaments are used in different stages, such as early prevention and treatment after disease onset. And because various germs are symbiotic in the greenhouse, various pesticides are needed to kill various germs respectively for different plant diseases and insect pests caused by different germs, so that multiple pesticides are needed to be mixed and used in large quantities in facility agriculture, and harm is caused. In addition, the drug resistance of germs after long-term use is also a problem.

In view of the problem of excessive pesticide use in the conventional agriculture, an ozone water sterilization method for use in facility agriculture is proposed, and referring to fig. 1, an ozone water sterilization method for use in facility agriculture includes the steps of: pre-spraying before field planting; spraying when crops grow; and harvesting and spraying crops.

It is known that different spraying steps are correspondingly adopted in different stages of crop planting, growth, harvesting and the like, namely the three steps do not have clear sequence relation and can be flexibly selected and combined, so that the growth habit of crops and the occurrence characteristic of diseases are combined, and the optimal sterilization effect is achieved.

Specifically, the pre-spraying is carried out before the crops are planted, namely when the crops are not planted or transplanted in the greenhouse, the environment in the greenhouse is cleaned, and germs hidden in the greenhouse are killed.

The spraying is carried out when the crops grow, namely regular or temporary spraying is carried out when the crops grow, wherein regular spraying is carried out when the crops grow normally, temporary spraying is carried out when the crops have diseases, and the regular spraying and the temporary spraying are matched with each other to ensure that the crops grow healthily. It is foreseeable that the spray parameters are not the same for both.

The crop harvesting spraying, namely the spraying before the crop harvesting, plays a role in sterilizing in advance, and prevents the crops, especially the fruits of the crops, from being infected by germs in the harvesting process and the subsequent transportation process.

Specifically, the disease of solanaceous fruits and vegetables is taken as an example for explanation, the method for sterilizing the ozone water is improved by combining the characteristics of ozone, the easily obtained disease characteristics of the solanaceous fruits and vegetables, the growth characteristics of the solanaceous fruits and vegetables and the production habit of agricultural operation, wherein the improvement is summarized as the following points:

one is that the sterilization effect is better when the ozone is in a low-temperature and high-humidity state.

The second is to avoid using ozone to sterilize at high temperature and when the ultraviolet is sufficient.

Solanaceous fruits and vegetables in facility agriculture mainly comprise: cucumber, tomato, round eggplant, long eggplant, green pepper, pumpkin, bitter melon, muskmelon and the like. Common main pests and diseases of the fruits and vegetables are as follows: downy mildew, gray mold, powdery mildew, soft rot, damping off, charcoal maggot disease, virus disease, early blight, late blight and the like, and the insect pests are common whitefly, acarid, aphid, liriomyza sativae and the like. The disease is mainly caused by different bacteria and viruses, and the ozone has the characteristic of high-efficiency broad-spectrum sterilization, and the high oxidizability oxidizes cell walls and cysts of the bacteria and the viruses, destroys a circulating system to die, so that the drug resistance cannot be generated.

The method for preventing and treating the diseases of the solanaceous fruits and vegetables in the facility agriculture is environment-friendly, time-saving and labor-saving, and achieves the purposes of reducing pesticides, namely enabling chemical pesticides to achieve zero growth and easily achieving negative growth by utilizing the characteristics of broad-spectrum sterilization, high efficiency, cleanness and no secondary pollution of ozone, and combining the growth characteristics of various bacterial diseases caused by various bacteria and the growth characteristics of the solanaceous fruits and vegetables in the facility agriculture.

The detailed implementation method of each step is described as follows:

in this embodiment, the pre-spraying before the crop planting comprises the following steps: spraying the fertilizer once in the morning and at night before field planting, mixing ozone for 12-18 minutes, and spraying ozone for 8-12 minutes. At the moment, the characteristic that ozone has better sterilization performance under the conditions of low temperature and low ultraviolet is utilized, and the ozone is sprayed once in the morning and evening to kill the seedlings in the shed, so that a good environment is created for the growth of the seedlings.

Specifically, the ozone mixing is to mix ozone into water to obtain ozone water, and the ozone water is transported to a place to be sprayed through a pipeline and is sprayed out through a spray head. The time for ozone mixing, i.e. the concentration of ozone water, is defined here respectively; and the time of the ozone water spray, i.e. the volume of ozone water received where the spray is to be made.

Optionally, spraying the fertilizer once in the morning and at night before field planting, mixing ozone for 15 minutes, and spraying ozone for 10 minutes.

In one possible design, when the selected sun is not raised in the morning, the selected sun is sprayed in the evening after the mountain is fallen. In this time, the ultraviolet ray is weak, the ozone sterilization effect is better, and the ozone consumption is saved.

In this embodiment, spraying during crop growth includes disease prevention spraying, disease treatment spraying, and cooling spraying. The crop can be divided into three conditions in the growing process, namely growing, suffering from plant diseases and insect pests and high temperature, and particularly in summer, the high temperature phenomenon is more, wherein disease prevention spraying is regular spraying, and the spraying period can be set according to the specific types of the planted crops. Disease treatment spraying and cooling spraying, namely the temporary spraying, can select a corresponding spraying mode when crops have corresponding phenomena, and at the moment, the spraying frequency can be set according to the damage degree of the crops.

Therefore, for operators, the invention provides specific guidance for crop growth, namely, spraying parameters and a spraying period are set after the crops are planted, patrol work is performed in the growth process, and disease treatment spraying and/or cooling spraying are performed when unexpected conditions occur, so that the work of the operators is simplified.

Three spraying modes in the growing of the crops are explained below.

In one possible design, the disease prevention spray comprises the following steps: spraying once every 3-5 days at 6-8 o' clock in the evening, mixing ozone for 8-12 minutes, and spraying ozone for 8-12 minutes; closing the shed for 8-12 minutes after spraying, and then opening the shed for ventilation to dry the leaf surfaces of the crops.

In various germs in facility agriculture, most of the germs are 5-7 days latent period, and the rest are 3-5 days, so that the germs are killed in the latent period and diseases are avoided by spraying once every 5 days. The spraying can be changed to once every 3 days in the period of easy occurrence of diseases, thereby shortening the sterilization period and reducing the occurrence probability of the diseases.

The study on the influence of single factor on the ozone water sterilization effect specifically comprises the following steps:

1) the influence of the ozone water concentration on the ozone sterilization effect is positively correlated with the ozone sterilization effect, namely the larger the ozone concentration is, the better the sterilization effect is, but the seedling burning phenomenon can occur when the ozone concentration is too high.

2) Specifically, referring to fig. 2, the longer the spraying time is, the higher the ozone sterilization effect is, and specifically, before 6 minutes, the sterilization rate increases exponentially with the increase of the spraying time; the sterilization rate continues to increase but the rising trend is slowed down within 6-8 minutes; after 8 minutes, the sterilization rate tends to be stable; the optimal time is about 8 minutes for spraying.

The experimental conditions were as follows: the concentration is 6.52 mg.L^-1The ozone water treatment has a bacteria content of 1 × 10⁹-3×10⁹cfu·mL^-1The duration of action of the E.coli suspension was varied, the results are given in the following table:

in the table, 1 in the group represents the experimental group, and 2 represents the control group.

The following conclusions can be drawn:

for the ozone concentration, the maximum concentration is set according to the actual crop species, and the method is simplified, can also set a universal maximum concentration lower limit value, and is convenient to popularize.

Regarding the spraying time, the time before and after and the time for reaching the optimal humidity are calculated during actual production, and if the spraying time is too long, the humidity in the greenhouse is too high, and the growth of crops in the greenhouse is further influenced, so that the spraying time is not too long, and the final operation time is usually set to be about 10 minutes.

In addition, the water contains various interferents such as organic impurities, inorganic impurities, heavy metals and the like, and ozone can firstly purify the interferents when being mixed with the water, so that the actual concentration of the mixed ozone water is lower than a theoretical value, and the spraying time needs to be prolonged to compensate.

Closing the greenhouse after the ozone spraying, namely closing the upper and lower ventilation openings of the greenhouse, wherein the time for reducing and decomposing the ozone under the normal temperature condition is 5-30 minutes, and then, the total time is about 20 minutes from the beginning of the spraying to the closing of the greenhouse, so as to finish the spraying sterilization of the crops in the time period. In addition, the closed greenhouse can also prevent ozone from being scattered outside the greenhouse, and the ozone action time is prolonged. Then the greenhouse is opened for ventilation, and the evaporation is accelerated by utilizing an air drying mode, so that the humidity is reduced. At night, the temperature is low and the ultraviolet ray is weak, which is helpful for ozone sterilization.

Optionally, spraying once every 3-5 days at 6-8 o' clock later, mixing with ozone for 10 minutes, and spraying with ozone for 10 minutes; closing the shed for 10 minutes after spraying, and then opening the shed for ventilation to dry the leaf surfaces of the crops.

In one possible design, the disease treatment spray comprises the following steps: spraying for two days continuously, spraying once at 6-8 o' clock in the first day, mixing ozone for 18-22 min, closing the shed, spraying ozone for 8-12 min, closing the shed for 8-12 min, and opening the shed for ventilation to dry the leaf surface of the crop.

Spraying once at 6-8 o' clock in the next day, mixing ozone for 18-22 min, closing the shed, spraying ozone for 8-12 min, closing the shed for 8-12 min, and opening the shed for ventilation to dry the leaves of the crops. Spraying the solution once again at 6-8 o' clock in the evening.

Obviously, when the crops have diseases, the germs need to be killed as soon as possible, so compared with disease prevention spraying, spraying parameters need to be adjusted to improve the sterilization effect in disease treatment spraying, therefore, the ozone mixing time is prolonged to improve the concentration of ozone water, the ozone spraying time is prolonged to improve the spraying time, and the sterilization time is prolonged. Meanwhile, the shed is closed immediately after the ozone spraying is started and is continued for a period of time, so that the amount of the ozone scattered outside is reduced. In addition, the frequency of spraying is increased, namely the spraying is changed from one time of spraying every 3 to 5 days to continuous spraying.

Optionally, spraying for two consecutive days, spraying once at 6-8 o' clock in the evening on the first day, mixing with ozone for 20 minutes, closing the shed, spraying with ozone for 10 minutes, closing the shed for 10 minutes, opening the shed again for ventilation, and drying the leaves of the crops.

Spraying once 6-8 points earlier the next day, mixing ozone for 20 minutes, closing the greenhouse, spraying ozone for 10 minutes, closing the greenhouse for 10 minutes, opening the greenhouse again and ventilating to dry the leaf surfaces of the crops. Spraying the solution once again at 6-8 o' clock in the evening.

In one possible design, the cooling spray comprises the following steps: ozone is not required to be mixed, only water is sprayed, and the spraying time is 18-22 minutes. When the temperature is within the range of 10-35 ℃, the crop can normally carry out photosynthesis; when the temperature is higher than 35 ℃, the activity of the photosynthetic enzyme is reduced, and the photosynthesis intensity of the crops is reduced; when the temperature is higher than 50 ℃, the photosynthesis of the crops is almost stopped, and high-temperature diseases are easy to occur.

Therefore, in order to keep the crops in the optimum temperature range for a long time, when the temperature exceeds 35 ℃, particularly in summer, the spraying system is not added with ozone and only sprays water, and then the spraying system is used as a cooling facility to prevent high-temperature drought virus diseases.

Alternatively, ozone was not mixed, only sprayed, and sprayed for 20 minutes.

In this embodiment, the crop harvest sprays include a pre-harvest spray and a post-harvest spray. Spraying before harvesting is to sterilize and prevent crops, especially fruits of the crops, prolong the quality guarantee period of the crops and achieve the purpose of improving economic benefits. Spraying after harvesting can be matched with pre-spraying before field planting of crops, so that residual bacteria in the greenhouse are reduced, and next crop planting is facilitated.

In one possible design, the pre-harvest spray comprises the steps of: spraying once a day before crop harvesting, mixing with ozone for 8-12 minutes, and spraying with ozone for 8-12 minutes.

During harvesting, the part of the crop where the fruits are picked is equivalent to a wound and is easily infected by germs, so that the crop is sterilized and prevented in advance. After harvesting, the fruits are infected by germs in the transportation process and are easy to mildew, so that the fruits are sterilized in advance to prolong the shelf life, mildew is reduced, and economic benefit is improved.

In addition, when the day before crop harvest is cloudy, the ozone is mixed for 12-18 minutes, and the ozone is sprayed for 2-4 minutes. The humidity is high in the shade day, and the time for the ozone water to reach the optimal humidity is greatly reduced, so that the spraying time can be shortened.

Optionally, spraying once a day before crop harvest, mixing with ozone for 10 minutes, and spraying with ozone for 10 minutes; when the day before crop harvest is cloudy, mixing the ozone for 15 minutes, and spraying the ozone for 3 minutes.

In one possible design, the post-harvest spray comprises the steps of: spraying once after each harvest, mixing ozone for 12-18 minutes, closing the greenhouse, spraying ozone for 18-22 minutes, and keeping the closed greenhouse after spraying.

On one hand, for crops which can be harvested in multiple batches, spraying is carried out once after each batch of crops is harvested so as to match spraying before harvesting, so that the effect of sterilizing in advance is achieved, and infection of the crops after harvesting is reduced; on the other hand, repeated spraying also carries out repeated sterilization to the big-arch shelter, has effectively reduced the quantity of incomplete fungus, has purified the internal environment of canopy.

Optionally, spraying once after harvesting each crop, mixing ozone for 15 minutes, closing the greenhouse, spraying ozone for 20 minutes, and keeping the closed greenhouse after spraying.

Example 2:

as shown in fig. 3-4, an ozone water sterilization spraying system for facility agriculture comprises an oxygen generator 1, a conveying device and a spraying device which are connected in sequence, wherein the oxygen generator 1 comprises a control device 11, an oxygen pump 12, an ozone generator 13, a jet device 14 and a gas-liquid mixing pump 15, the control device 11 is electrically connected with the oxygen pump 12, the ozone generator 13, the jet device 14 and the gas-liquid mixing pump 15, the oxygen pump 12, the ozone generator 13 and the jet device 14 are connected in series in sequence through pipelines, and the jet device 14 and the gas-liquid mixing pump 15 are connected in parallel.

The ozone water sterilization spraying system for facility agriculture mixes ozone and water on the basis of ozone preparation, ozone water is obtained, the ozone water can be sprayed to crops, sterilization of the surrounding environment, air and the surfaces of the crops is achieved in the spraying process, the purpose of multiple sterilization is achieved, and the problem of unstable sterilization effect caused by easy decomposition and reduction of ozone gas is effectively solved. In addition, in the ozone water preparation process, the ozone kills and oxidizes germs and heavy metals in the water, and the water source transmission path of plant diseases and insect pests is cut off.

When the ozone generator works, a user operates the control device 11, all parts are started through the control device 11, the oxygen pump 12 is started to pump air into the ozone generator 13, the ozone generator 13 electrically shocks the oxygen in a high-voltage discharge mode to generate ozone gas, and the ozone gas is conveyed into the ejector 14 through a pipeline. The ejector 14 is connected to a gas-liquid mixing pump 15, and ozone gas is mixed with water in the gas-liquid mixing pump 15 to produce ozone water.

The ozone water is conveyed into the spraying device through the conveying device, the part of the spraying device is positioned in the facility greenhouse, and then the ozone water is sprayed to the crops in the facility greenhouse, so that the crops and the facility greenhouse are sterilized.

It is known that ozone water with different concentrations can be produced by controlling parameters such as mixing time, ozone gas volume, etc. Meanwhile, the ozone water with different concentrations can be selected according to the reference factors such as the crop species, the crop growth condition, the surrounding environment and the like.

Obviously, each spare part can dispersedly be placed in the oxygenerator 1, but the occupied space of oxygenerator 1 this moment is big, and the integrated level is low, is not convenient for remove and transport. The structure of the oxygen generator 1 is supplemented here, that is, the oxygen generator 1 further comprises a box 16 and a frame 17 located below the box 16, wherein the control device 11, the oxygen pump 12 and the ozone generator 13 are all arranged in the box 16, the ejector 14 and the gas-liquid mixing pump 15 are all arranged in the frame 17, and the box 16 is provided with an air inlet adapted to the oxygen pump 12.

At this time, the control device 11, the oxygen pump 12, the ozone generator 13, the ejector 14 and the gas-liquid mixing pump 15 are integrated on the box body 16 and the frame body 17, so that the space in the vertical direction is fully utilized, the occupied area is reduced, and the field is saved. Meanwhile, the moving or transferring process is more convenient, and the moving performance is improved.

In one possible design, the pipe is provided as a tetrafluoride pipe. The polytetrafluoroethylene tube is a high-molecular polymer prepared by polymerizing tetrafluoroethylene serving as a monomer, has the characteristics of acid resistance, alkali resistance and various organic solvents resistance, is almost insoluble in all solvents, has excellent heat resistance and cold resistance, and can be used at a temperature of-180-260 ℃ for a long time. In addition, the friction coefficient of the polytetrafluoroethylene is extremely low, so that the polytetrafluoroethylene not only can play a role in lubrication, but also can reduce the probability of attaching impurities and ensure the quality of ozone water.

In the embodiment, the ozone gas enters the jet device 14 to be mixed with water, so as to generate ozone water, and the concentration of the ozone water can be controlled by controlling the volume of the ozone gas entering the jet device 14, the mixing time of the ozone gas and the water, and the like, so that the ozone water jet device is suitable for different spraying requirements, and the application range is expanded.

Alternatively, the ejector 14 includes, but is not limited to, a venturi-type ejector.

Alternatively, the ozone gas is mixed with water in the ejector 14 and ozone water having a concentration of not less than 8 mg/l is generated. The minimum concentration of ozone water is set here to be suitable for different kinds of crops. It is easy to understand that the factors for adjusting the concentration of the ozone water by appropriately increasing or decreasing the concentration of the ozone water according to the actual use condition have been described, and are not described herein again.

In the present embodiment, the control device 11 includes a control board, a timer 101 and a flow meter 102, wherein the control board is electrically connected to the timer 101 and the flow meter 102, an ammeter 103, a voltmeter 104, an ozone switch 105 and a pump switch 106 are further disposed on the control board, at least respective indicated parts of the timer 101, the flow meter 102, the ammeter 103 and the voltmeter 104 are visible from outside the box 16, and the ozone switch 105 and the pump switch 106 are at least partially disposed outside the box 16.

The timer 101 is used for measuring the working time of at least one of the oxygen pump 12, the ozone generator 13, the ejector 14 and the gas-liquid mixing pump 15, thereby indirectly reflecting the concentration of the ozone water, and optionally, the timer 101 is electrically connected with the ejector 14 and measures the working time of the ejector 14. The flow meter 102 is used to measure the output of the oxygen pump 12 and/or the ozone generator 13, thereby directly or indirectly measuring the volume of ozone gas entering the ejector 14, and thus indirectly reflecting the concentration of ozone water. The timer 101 and the flowmeter 102 are used in cooperation with each other, and the concentration of the produced ozone water is more accurate.

The ammeter 103 and the voltmeter 104 are used for monitoring the ozone generator 13, that is, the ozone generator 13 is used for producing ozone by electric shock, so that real-time current and voltage need to be monitored, no accident is caused, and the safety of use is ensured. It will be readily appreciated that any suitable commercially available model may be used for ammeter 103 and voltmeter 104.

Further, the ammeter 103 and the voltmeter 104 are visible from the outside, that is, at least a part of the ammeter 103 and the voltmeter 104 is exposed outside the case 16; or, the box 16 is provided with an observation window at the number indicating part of the ammeter 103 and the voltmeter 104; or the ammeter 103 and the voltmeter 104 are electrically connected to a display screen, and the display screen is fixed on the box 16.

The ozone switch 105 is used to control the operation of the oxygen pump 12, the ozone generator 13, and the ejector 14, i.e., the process from the air to the oxygen generator 1 to the ozone water production, and further, the ozone water concentration can be controlled.

The pump body switch 106 is used to control the operation of the gas-liquid mixing pump 15, and the concentration of the ozone water can be further increased by the gas-liquid mixing pump 15. The suction port of the gas-liquid mixing pump 15 can suck gas by negative pressure action, so that an air compressor and an atmospheric ejector are not required. The high speed rotating pump impeller mixes and agitates the liquid with the gas so that no agitator or mixer is required. Due to the pressurization and mixing in the pump, the gas and the liquid are fully dissolved, and the dissolving efficiency can reach 80-100%. So that the high-degree solution can be prepared without a large pressurized gas dissolving tank or an expensive reaction tower. The method can improve the preparation efficiency of the dissolved gas-liquid, simplify the preparation device, save the field, greatly reduce the initial investment, and save the operation cost and the maintenance cost.

Alternatively, any suitable commercially available model may be used for ozone switch 105 and pump body switch 106.

In this embodiment, the transportation device includes a water treatment device 21 and a pump body 22 connected in sequence, the water inlet of the water treatment device 21 is connected to the gas-liquid mixing pump 15, and the water outlet of the pump body 22 is connected to the shower device.

The water treatment device 21 is suitable for water quality treatment and control of circulating water, tap water, surface water, underground water, seawater, water for swimming pools and hot water, and the water treatment device 21 adsorbs and concentrates hardness substances and composite scales formed by various water systems under actual operation conditions through a comprehensive filter body integrating an active iron filter membrane, a mechanical filter reducing hole blocking body and a corona effect field, so that the concentration of the hardness substances and the composite scales is reduced, and the purpose of controlling the scales and most of the hardness scales is achieved. Thereby further improving the quality of the ozone water.

The pump body 22 is used for providing a driving force, and further pumping the ozone water to the spraying device, so that the spraying of the ozone water is realized. Optionally, the pump body 22 includes, but is not limited to, a high pressure pump.

In this embodiment, the spraying device includes a main pipe 31 and a plurality of spraying pipe 32, wherein, is equipped with the water inlet that a intercommunication pump body 22 on the main pipe 31, still is equipped with a plurality of delivery port on the main pipe 31, and the delivery port of main pipe 31 is held in intercommunication to the intake of spraying pipe 32, and in the play water end of spraying pipe 32 extended to the facility big-arch shelter, spraying pipe 32 was located the part in the facility big-arch shelter and is equipped with a plurality of shower nozzle, and delivery port, spraying pipe 32 and facility big-arch shelter one-to-one setting.

Obviously, the spraying device and the facility greenhouses are in a one-to-many relationship, that is, one spraying device provides ozone water for a plurality of facility greenhouses, so that ozone sterilization is realized for the plurality of facility greenhouses. In addition, the spray head is preferably an atomizing spray head, so that the ozone water is sprayed into the air and is scattered in a mist shape, the spraying area of a single spray head is increased, and the number of the arranged spray heads is effectively reduced.

Finally, it should be noted that: the above description is only a preferred embodiment of the present invention, and is not intended to limit the protection scope of the present invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A method for sterilizing ozone water in facility agriculture is characterized by comprising the following steps:

pre-spraying before field planting;

spraying when crops grow;

harvesting and spraying crops;

2. The ozonated water sterilization method for use in facility agriculture according to claim 1, wherein the pre-spraying before the crop planting comprises the steps of:

3. The ozone water sterilization method for facility agriculture according to claim 1, wherein the disease prevention shower comprises the steps of:

4. The ozone water sterilization method for facility agriculture according to claim 1, wherein the disease treatment shower comprises the steps of:

spraying the solution once again at 6-8 o' clock in the evening.

5. The ozonated water sterilization method for use in facility agriculture according to claim 1, wherein the temperature reduction spray comprises the steps of:

6. The ozonated water sterilization method for use in facility agriculture according to claim 1, wherein the pre-harvest spraying comprises the steps of:

7. The ozonated water sterilization method for use in facility agriculture according to claim 1, wherein the post-harvest spraying comprises the steps of:

spraying once after each harvest, mixing ozone for 12-18 minutes, closing the greenhouse, spraying ozone for 18-22 minutes, and keeping the closed greenhouse after spraying.

8. An ozone water sterilization spray system used in facility agriculture for the ozone water sterilization method according to any one of claims 1 to 7, comprising an oxygen generation device (1), a delivery device and a spray device which are connected in sequence, wherein the oxygen generation device (1) comprises a control device (11), an oxygen pump (12), an ozone generator (13), an ejector (14) and a gas-liquid mixing pump (15), the control device (11) is electrically connected with the oxygen pump (12), the ozone generator (13), the ejector (14) and the gas-liquid mixing pump (15), the oxygen pump (12), the ozone generator (13) and the ejector (14) are connected in series in sequence through a pipeline, and the ejector (14) and the gas-liquid mixing pump (15) are connected in parallel;

the oxygen generation device (1) further comprises a box body (16) and a frame body (17) located below the box body (16), wherein the control device (11), the oxygen pump (12) and the ozone generator (13) are all arranged in the box body (16), the ejector (14) and the gas-liquid mixing pump (15) are all arranged in the frame body (17), and an air inlet adaptive to the oxygen pump (12) is formed in the box body (16).

9. The ozonated water sterilization spray system for use in facility agriculture according to claim 8, wherein the control device (11) comprises a control board, a timer (101), and a flow meter (102), wherein the control board is electrically connected to the timer (101) and the flow meter (102), and an ammeter (103), a voltmeter (104), an ozone switch (105), and a pump body switch (106) are further provided on the control board, at least respective indicated portions of the timer (101), the flow meter (102), the ammeter (103), and the voltmeter (104) are visible from outside the tank (16), and the ozone switch (105) and the pump body switch (106) are at least partially provided outside the tank (16).

10. The ozone water sterilization spraying system used in facility agriculture according to any one of claims 8-9, characterized in that the delivery device comprises a water treatment device (21) and a pump body (22) which are connected in sequence, wherein the water inlet hole of the water treatment device (21) is connected with the gas-liquid mixing pump (15), and the water outlet hole of the pump body (22) is connected with the spraying device;

the spraying device comprises a main pipeline (31) and a plurality of spraying pipelines (32), wherein a water inlet communicated with the pump body (22) is formed in the main pipeline (31), a plurality of water outlets are further formed in the main pipeline (31), the water inlet end of each spraying pipeline (32) is communicated with the water outlet of the main pipeline (31), the water outlet end of each spraying pipeline (32) extends into the facility greenhouse, a plurality of spray heads are arranged on the part, located in the facility greenhouse, of each spraying pipeline (32), and the water outlets, the spraying pipelines (32) and the facility greenhouse are in one-to-one correspondence arrangement.