CN106508508A - Greenhouse-planting water-and-fertilizer-integration cluster irrigation system and method - Google Patents

Abstract

The invention provides a greenhouse-planting water-and-fertilizer irrigation system and method. The irrigation system comprises a fertilizer preparing feeding subsystem, an irrigation control subsystem and a fertilizer transferring subsystem. The fertilizer preparing feeding subsystem is respectively provided with a fertilizer-liquid input pipe and a clear-water input pipe, and therefore mixed fertilizer liquid with the required concentration is prepared in real time; different irrigation lines and different irrigation devices are flexibly arranged in the fertilizer transferring subsystem, and all the planting areas are covered with the irrigation system; the irrigation control subsystem controls switching sequences between the different irrigation lines and/or the different irrigation devices of the fertilizer transferring subsystem, irrigation work of different planting compartments and multiple different plants is applied, and irrigation work of multiple varieties, the multiple planting compartments and multiple kinds of greenhouse planting is completed. The irrigation system and method are low in investment, easy to operate and high in applicability, and the irrigation efficiency of plants can be effectively improved.

Description

Water and fertilizer integrated cluster irrigation system for greenhouse planting and irrigation method thereof

technical field

The invention relates to the technical field of water and fertilizer irrigation in greenhouses, and more specifically, to a greenhouse planting water and fertilizer integrated cluster irrigation system and an irrigation method thereof.

Background technique

my country is a big country in the production and use of chemical fertilizers, and it is also a country with a high shortage of water resources. Vegetables and other horticultural crops with high added value have a low water and fertilizer utilization rate, and excessive fertilization and excessive irrigation are more common, resulting in a gradual increase in agricultural production costs, a continuous deterioration of the agricultural ecological environment, and a threat to the safety of vegetable products.

At present, the operating entities of greenhouses in my country generally have a large number of planting crop varieties, planting divisions, and the number of greenhouses. In the process of water and fertilizer irrigation, it is necessary to adjust the concentration of water and fertilizer in real time according to the actual irrigation demand. For example, the Chinese invention patent with application number CN201310552907.4 discloses a precision irrigation and fertigation system.

Referring to Fig. 1, the system is provided with a mixing tank 8, the nutrient solution in the stock solution tank 3 is introduced into the mixing tank 8, and a pH meter 5, an EC meter 6 and a two-way valve are sequentially arranged between the stock solution tank 3 and the mixing tank 8 7. Detect whether the concentration of the nutrient solution delivered to the mixing tank 8 meets the requirements. The nutrient solution that does not meet the requirements is discharged through the two-way valve 7 and processed separately. The nutrient solution that meets the requirements enters the mixing tank 8 through the two-way valve 7, and then Enter the irrigation controller through the water pump 10 to perform irrigation operations.

The fertigation system can accurately detect and control the concentration of water and fertilizer for irrigation operations, but the adjustment of water and fertilizer concentration requires the cooperation of other auxiliary facilities to complete, and when it is necessary to change the concentration of water and fertilizer for irrigation, subsequent irrigation operations must be stopped, etc. When the concentration of the nutrient solution in the mixing tank 8 meets the requirements, the irrigation operation can be restarted.

At the same time, when the planting area is large and there are many varieties of crops, it is difficult for some current automated water and fertilizer integration equipment to meet the irrigation needs of large areas and a variety of different crops. Moreover, the price is expensive, and it is difficult for general operators to bear the high cost of configuring multiple devices.

Contents of the invention

In order to overcome the above problems or at least partially solve the above problems, the present invention provides a water and fertilizer irrigation system and irrigation method for greenhouse planting with automatic fertilization and multi-planting areas and multi-crop varieties.

According to one aspect of the present invention, there is provided a water and fertilizer irrigation system for greenhouse planting, which includes: a fertilizer preparation supply subsystem that introduces fertilizer liquid and/or clear water to prepare and output a mixed fertilizer liquid with a specific EC value and pH value in real time, and The mixed fertilizer solution output by the fertilizer preparation and supply subsystem is controlled to enter the irrigation control subsystem of a specific planting area.

The fertilizer preparation and supply subsystem can adjust and prepare a mixed fertilizer solution with a specific EC value and pH value in real time according to the irrigation conditions of the crops, so as to meet the different irrigation needs of large-scale crop planting or different crops. The adjustment method is flexible and easy to implement.

According to one aspect of the present invention, a kind of water and fertilizer irrigation method for greenhouse planting is provided, and its specific irrigation method is as follows:

S1. Introducing fertilizer and/or clean water into the mixed liquid tank (9) through the fertilizer liquid input pipeline and the clean water input pipeline respectively to obtain a mixed fertilizer liquid;

S2, according to EC meter (13) and pH meter (14) the result that the EC value of the mixed fertilizer liquid that pH meter (14) detects and pH value compare with set value, adjust the fertilizer and/or water that introduces in the mixed liquid tank (9) amount, so as to adjust the EC value and pH value of the mixed fertilizer solution to the set value;

S3. Output the mixed fertilizer liquid reaching the set value in the mixed liquid tank (9) to the irrigation control subsystem through the fertilizer liquid output pipeline;

S4. By controlling the opening/closing state of the irrigation solenoid valve, controlling the mixed fertilizer liquid to enter the fertilizer transfer subsystem to irrigate the planting area of a crop;

S5. After completing the irrigation of one crop, adjust the EC value and pH value of the mixed fertilizer solution in the mixed liquid tank (9), switch the irrigation line, repeat step S4, and irrigate the planting area of another crop.

According to different crops and different irrigation conditions, without stopping the fertilizer preparation and supply subsystem to prepare the mixed fertilizer solution, switch the irrigation lines in the fertilizer transfer subsystem for irrigation operations, so as to continuously perform irrigation operations for different planting areas and different crops .

The beneficial effects of the present invention are as follows:

(1) The fertilizer preparation and supply subsystem is equipped with an EC meter and a pH meter to monitor the EC value and pH value of the mixed fertilizer solution, and prepare a suitable mixed fertilizer solution according to the irrigation needs of the crops;

(2) The irrigation control subsystem is equipped with multiple irrigation solenoid valves to facilitate the switching of irrigation pipelines and avoid the fluctuation of the concentration of the mixed fertilizer solution caused by the frequent start and stop of the fertilizer preparation and supply subsystem, thereby affecting the growth of crops;

(3) The irrigation line of the fertilizer transfer subsystem is equipped with multiple irrigation devices, and the fertilizer solution with the same EC value and pH value is transferred successively to the planting area with the same irrigation conditions, so as to minimize the concentration of the fertilizer solution (EC value and pH value) ) fluctuations, effectively improving the fertilizer utilization rate and increasing the planting income.

(4) The fertilizer transfer subsystem is equipped with multiple irrigation lines. By switching different irrigation devices or irrigation lines, a set of irrigation system devices can realize water and fertilizer irrigation with multiple varieties, multiple planting divisions, and multiple greenhouse planting numbers. , simple operation, greatly reduced investment in water and fertilizer integration equipment, and strong practicability;

(5) The structure of the irrigation system is simple, and the structure of the irrigation system can be flexibly changed according to the irrigation conditions.

Description of drawings

Fig. 1 is the schematic diagram of a kind of precise irrigation and fertigation system of prior art;

Fig. 2 is a schematic diagram of a water and fertilizer irrigation system for greenhouse planting according to an embodiment of the present invention.

detailed description

The specific implementation manners of the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

Referring to Figure 2, a water and fertilizer irrigation system for greenhouse planting includes a fertilizer preparation and supply subsystem and an irrigation control subsystem. The fertilizer preparation and supply subsystem prepares mixed fertilizer solutions with different EC values and pH values in real time by introducing fertilizer liquid and/or clean water respectively, with flexible adjustment methods and strong applicability; the irrigation control subsystem controls the mixing prepared by the fertilizer preparation and supply subsystem. The fertilizer solution enters the designated planting area or irrigation area to perform irrigation operations, and can accurately implement irrigation for specific planting areas or crops.

The fertilizer preparation and supply subsystem includes fertilizer liquid input pipelines, clean water input pipelines and fertilizer liquid output pipelines. The fertilizer liquid input pipelines and clean water input pipelines are respectively connected to the fertilizer liquid output pipelines. A fertilizer liquid detection feedback adjustment pipeline is arranged between the output pipelines.

The fertilizer liquid input pipeline includes a mother liquid tank 1 and a Venturi fertilizer suction pipe 6, and the Venturi fertilizer suction pipe 6 is connected to the fertilizer liquid output pipeline, and the mother liquid tank 1 and the Venturi fertilizer suction pipe 6 of the fertilizer liquid input pipeline are in turn A Y-shaped filter 2, a float flow meter 3, a fertilizer flow regulating valve 4 and a fertilizer liquid on-off solenoid valve 5 are provided.

The Y-type filter filters the fertilizer liquid flowing through the fertilizer liquid input pipeline to prevent the fertilizer liquid from being blocked when it flows through the fertilizer liquid input pipeline. The float flowmeter 3 measures the flow rate of the fertilizer liquid flowing through the fertilizer liquid input pipeline to monitor the amount of the fertilizer liquid in real time. The fertilizer flow regulating valve 4 regulates the flow rate of the fertilizer liquid in the fertilizer liquid input pipeline. Fertilizer liquid on-off electromagnetic valve 5 controls the time of opening/closing to adjust the amount of fertilizer liquid flowing through the fertilizer liquid input pipeline. Venturi fertilizer suction pipe 6 sucks the fertilizer liquid in the mother liquid tank 1 to Prepare mixed fertilizer solutions with different concentrations.

The fertilizer preparation and supply subsystem includes at least one set of fertilizer liquid input pipelines, and multiple sets of fertilizer liquid input pipelines are arranged side by side. According to the size of the irrigated planting area, the demand for fertilizer solution and irrigation conditions, one or more sets of fertilizer solution input pipelines should be reasonably set up.

The clean water input pipeline is provided with an input water source flow regulating valve 7 and an input water source upper liquid level gauge 8 in sequence. The input water source flow regulating valve 7 regulates the amount of input clean water, and the liquid level gauge 8 on the input water source is used for measuring the flow size of the input clean water source.

The fertilizer liquid output pipeline includes a mixed liquid tank 9 , a liquid level gauge 10 under the mixed liquid tank and a fertilizer liquid output pump 11 . The Venturi fertilizer suction pipe 6 of the fertilizer liquid input pipeline and the liquid level gauge 8 on the input water source of the clear water inlet and outlet pipeline are all connected with the mixed liquid tank 9 of the fertilizer liquid output pipeline.

The liquid level gauge 10 under the mixed liquid tank is connected to the output end of the mixed liquid tank 9 and the fertilizer liquid output pump 11 respectively.

The Venturi fertilizer suction pipe 6 sucks the fertilizer liquid in the mother liquid tank 1 into the mixed liquid tank 9. At the same time, the clean water input pipeline enters the clean water source into the mixed liquid tank 9, and mixes the fertilizer liquid and clean water to prepare a certain concentration of Mixed fertilizer solution.

The liquid level gauge 10 under the mixed liquid tank is used to monitor the stock of the mixed fertilizer liquid in the mixed liquid tank 9 in real time, and adjust the Venturi fertilizer suction pipe 6 and/or the water source flow regulating valve 7 according to the amount of the stock, thereby adjusting the fertilizer liquid introduced into the mixed liquid tank and/or the amount of fresh water. The fertilizer liquid output pump 11 outputs the mixed fertilizer liquid in the mixed liquid tank 9 and delivers it to the irrigation control subsystem.

The fertilizer liquid detection feedback adjustment pipeline includes a pressure gauge 12 , an EC meter 13 and a pH meter 14 . The EC meter 13 and the pH meter 14 are sequentially connected to the mixed liquid tank 9; the input end of the Venturi fertilizer suction pipe 6 is connected with the output end of the fertilizer liquid output pump 11 through a pipeline to form a loop, and a pressure gauge 12 is set on the loop.

The EC meter 13 and the pH meter 14 are used to detect the EC value and pH value of the mixed fertilizer liquid in the mixed liquid tank 9, and compare the measured value with the set EC value and pH value, and adjust the on-off of the fertilizer liquid according to the comparison result Solenoid valve 5 and/or water source flow regulating valve 7, thereby regulate the amount of fertilizer liquid and/or clear water introduced in the mixed liquid tank 9, prepare the mixed fertilizer liquid of specific EC value and pH value. The excess or residual mixed fertilizer liquid in the fertilizer liquid output pipeline is recycled through the loop and recollected into the mixed liquid tank 9 to avoid waste or affect the irrigation conditions of the next crop. The pressure gauge 12 is used to monitor the pipeline pressure in the loop, and then control the flow rate of the fertilizer liquid introduced into the mixed liquid tank 9 .

The irrigation control subsystem includes a fertilizer liquid output flow meter 15 and an irrigation solenoid valve. One end of the fertilizer liquid output flow meter 15 is connected to the fertilizer liquid output pump 11 and the other end is connected to the irrigation solenoid valve. The fertilizer liquid output flowmeter 15 is used to measure the flow size of the mixed fertilizer liquid output in the mixed liquid tank 9; Traffic size.

The fertilizer transfer subsystem includes an irrigation line with an irrigation device on the irrigation line. The irrigation device includes a fertilizer tank. The input end of the fertilizer tank is equipped with a liquid level gauge on the fertilizer tank, and the output end is equipped with a liquid level gauge under the fertilizer tank. , one end of the liquid level gauge under the fertilizer tank is connected to the irrigation pump.

The lower end of the fertilizer tank is provided with a fertilizer transfer pump, one end of the fertilizer transfer pump is connected to a fertilizer irrigation pipeline, and the fertilizer irrigation pipeline is connected to the next irrigation delivery device.

In one embodiment, when the planting area of the crop A is watered, the fertilizer liquid output pump 11 draws out the uniformly mixed mixed fertilizer liquid in the liquid mixing tank 9, and inputs it to a feeding irrigation line of the fertilizer transfer subsystem through the opened irrigation solenoid valve 22A. Line, the crop A is irrigated by the irrigation device of this irrigation line.

The mixed fertilizer liquid is introduced into the fertilizer tank 19 through the irrigation solenoid valve 22A, and the liquid level gauge 16 on the fertilizer tank connected to the fertilizer tank 19 and the liquid level gauge 17 under the fertilizer tank are respectively used to control the liquid level of the mixed fertilizer liquid in the fertilizer tank 19. bit to monitor. The mixed fertilizer liquid in the fertilizer tank 19 is output through the irrigation pump 18, and the planting area 23 of the crop A is drip-irrigated.

After the planting area 23 of the crop A has been irrigated, the irrigation pump 18 is turned off, the fertilizer transfer pump 20 is turned on, and the mixed fertilizer liquid in the fertilizer tank 19 is delivered to the fertilizer irrigation pipeline 21, and the mixed fertilizer solution is transported through the fertilizer irrigation pipeline 21 to the next infusion set. During the process of introducing the mixed fertilizer liquid into the next irrigation device, there is no need to stop the operation of the fertilizer preparation and supply subsystem.

The fertilizer irrigation pipeline 21 is connected to the fertilizer tank 19A1. The input end of the fertilizer tank 19A1 is provided with a liquid level gauge 16A1 on the fertilizer tank, and the output end is provided with a liquid level gauge 17A1 under the fertilizer tank. The fertilizer tank 19A1 is also connected with an irrigation pump 18A1 and a fertilizer tank. The transfer pump 20A1, one end of the fertilizer transfer pump 20A1 is connected to the fertilizer irrigation pipeline 21A1, and the fertilizer irrigation pipeline 21A1 is connected to the next irrigation device.

According to the size or number of the crop A planting area, multiple irrigation devices can be set up to perform drip irrigation on the corresponding planting areas in turn until the entire planting area of the crop A is covered.

The fertilizer transfer subsystem includes at least one irrigation line. The multiple irrigation lines of the fertilizer transfer subsystem are arranged side by side, respectively arranged in different planting areas or irrigation areas, switching different irrigation lines, and performing irrigation operations on different planting areas or different crops.

Each irrigation line is correspondingly equipped with an irrigation solenoid valve, which is convenient for switching different irrigation lines. At the same time, when switching different irrigation lines, it is not necessary to stop the operation of the fertilizer preparation and supply subsystem.

The present invention also provides a water and fertilizer irrigation method for greenhouse planting, and its specific irrigation method is:

S1, introducing fertilizer and/or clean water into the mixed liquid tank 9 through the fertilizer liquid input pipeline and the clean water input pipeline respectively, to obtain a mixed fertilizer liquid;

S2. According to the result of comparing the EC value and pH value of the mixed fertilizer liquid detected by the EC meter 13 and the pH meter 14 with the set value, adjust the amount of fertilizer and/or water introduced into the mixed liquid tank 9, thereby adjusting the mixed fertilizer The EC value and pH value of the liquid reach the set value;

S3. Output the mixed fertilizer liquid reaching the set value in the mixed liquid tank 9 to the irrigation control subsystem through the fertilizer liquid output pipeline;

S4. By controlling the opening/closing state of the irrigation solenoid valve, controlling the mixed fertilizer liquid to enter the fertilizer transfer subsystem to irrigate the planting area of a crop;

S5. After completing the irrigation of one crop, adjust the EC value and pH value of the mixed fertilizer solution in the mixed liquid tank 9, switch the irrigation line, and repeat step S4 to irrigate the planting area of another crop.

According to the EC meter and pH meter in the fertilizer preparation and supply subsystem, the EC value and pH value of the mixed fertilizer liquid in the mixed liquid tank 9 are detected, and according to the comparison between the measured value and the set value, the fertilizer introduced into the mixed liquid tank 9 is adjusted. The amount of liquid and/or clean water is used to prepare a mixed fertilizer solution with a specific EC value and pH value to irrigate a specific planting area or crop. The adjustment method is flexible and simple, and the EC value and pH value of the mixed fertilizer solution can be adjusted and changed in real time according to the irrigation conditions.

The irrigation solenoid valve controls the compost solution input to the fertilizer transfer subsystem. The fertilizer transfer subsystem is provided with at least one irrigation line, and through the control conversion of the irrigation solenoid valve, it is convenient to perform irrigation operations on planting areas with different crops and different irrigation conditions.

In the above step S4, the irrigation solenoid valve controls the mixed fertilizer liquid to enter the fertilizer transfer subsystem for irrigation. The specific method is as follows:

S41, open the irrigation solenoid valve, and introduce the mixed fertilizer solution whose EC value and pH value reach the set value into an irrigation line of the fertilizer transfer subsystem;

S42, the mixed fertilizer liquid enters the fertilizer tank 19 of the irrigation line, and the mixed fertilizer liquid in the fertilizer tank 19 drip-irrigates the crops in the planting area 23 through the irrigation pump 18, and the flow rate of the fertilizer liquid in the input fertilizer tank 19 and the irrigation pump 18 The flow rate of the output fertilizer liquid is equal;

S43, after the crops in the planting area 23 have been irrigated, close the irrigation pump 18, open the fertilizer transfer pump 20, the mixed fertilizer liquid enters the fertilizer irrigation pipeline 21 through the fertilizer transfer pump 20, and enters the flow rate of the fertilizer liquid in the fertilizer tank 19 and The flow rate of fertilizer transfer pump 20 output fertilizer liquid is the same;

S44, the mixed fertilizer liquid enters the next irrigation device through the fertilizer irrigation pipeline 21, and irrigates another planting area 24 where the crop is located;

Steps S42-S44 are repeated until the irrigation operation of all planting areas of the crop is completed.

In one irrigation line of the fertilizer transfer subsystem, the number of irrigation devices is set according to the size or number of the planting area of the crop.

After completing the irrigation of one planting area of the crop, the mixed fertilizer solution is transferred to the next irrigation device through the fertilizer transfer pump and the fertilizer irrigation pipeline.

When irrigating different planting areas or transferring fertilizer liquid, the flow rate of the mixed fertilizer liquid input into the fertilizer tank is the same as the flow rate of the mixed fertilizer liquid output from the fertilizer tank, so as to ensure that the irrigation operation is carried out under approximately the same working conditions.

In another embodiment, the irrigation solenoid valve 22A is turned on, the mixed fertilizer solution with a specific A0 value is introduced into the fertilizer tank 19, the irrigation pump 18 is turned on, and the dripper operation is performed on the planting area 23 of the crop A.

After the planting area 23 is irrigated, the irrigation pump 18 is turned off, the fertilizer transfer pump 20 is turned on, and the mixed fertilizer solution in the fertilizer pipe 19 is transferred to the fertilizer tank 19A1 through the fertilizer transfer pump 20 and the fertilizer irrigation pipeline 21 . The irrigation pump 18A1 is turned on to drip-irrigate the planting area 24 of the crop A.

After the planting area 24 irrigation is completed, close the irrigation pump 18A1, open the fertilizer transfer pump 20A1, and the mixed fertilizer liquid in the fertilizer tank 19A1 is transported to the next irrigation device through the fertilizer transfer pump 20A1 and the fertilizer irrigation pipeline 21A1. The drip irrigation operation is carried out in the next planting area until the planting area of crop A is completely irrigated.

By setting up multiple irrigation devices, switching between different irrigation devices during irrigation operations avoids the excessive length of the irrigation pipeline of a single irrigation device, resulting in low irrigation pressure and insufficient irrigation volume. Case.

The specific methods for adjusting the EC value and pH value of the mixed fertilizer solution and switching the irrigation circuit in the above-mentioned step S5 are:

S51, repeat steps S1-S3, adjust the EC value and pH value of the mixed fertilizer liquid in the mixed liquid tank 9 to another similar set value;

S52. Close the irrigation solenoid valve that controls the irrigation line that has completed the irrigation operation, and open another irrigation solenoid valve;

S53, the mixed fertilizer liquid in the mixed liquid tank 9 enters another irrigation line of the fertilizer transfer subsystem, performs irrigation operations on the planting area of another crop, and repeats step S4;

After the irrigation of the planting area of the crop is completed, step S5 is repeated to perform the irrigation operation of the next crop.

In another embodiment, by adjusting the fertilizer liquid on-off solenoid valve 5 and/or the input water source flow regulating valve 7, thereby adjusting the amount of fertilizer liquid and/or clear water introduced into the mixed liquid tank 9, the A0 value close to that obtained is prepared. Another compost solution with a specific B0 value.

After all the planting areas of crop A are fully irrigated, close the irrigation solenoid valve 22A, open the irrigation solenoid valve 22B, and the mixed fertilizer solution with B0 value enters another irrigation circuit of the fertilizer transfer subsystem, and repeat step S4 to irrigate the crops All growing areas where B is located.

After all the irrigation of the planting area of crop B is completed, repeat step S5, close the irrigation solenoid valve 22B, open another irrigation solenoid valve, and irrigate the planting area of another crop with similar concentration of the required mixed fertilizer solution until the irrigation of all crops is completed Operation.

According to different crops and different irrigation conditions, switch the irrigation lines for irrigation in the fertilizer transfer subsystem. During the switching process, the irrigation lines of the crop planting areas with similar EC values and pH values are switched sequentially, so that when different crops are irrigated or different irrigation requirements exist, the concentration fluctuation of the mixed fertilizer solution is the smallest and the concentration fluctuation is reduced. Adverse effects on crop irrigation.

At the same time, by controlling the switching status of different irrigation solenoid valves, the irrigation status of different irrigation lines in the fertilizer transfer subsystem is controlled without stopping the operation of the fertilizer preparation and supply subsystem, which avoids failures caused by frequent start and stop of the fertilizer preparation and supply subsystem. The concentration of irrigation fertilizer solution fluctuated sharply, resulting in reduced production.

A water and fertilizer irrigation system for greenhouse planting, which is equipped with a fertilizer preparation and supply subsystem, an irrigation control subsystem, and a fertilizer transfer subsystem. The fertilizer preparation and supply subsystem is respectively equipped with input pipelines for fertilizer liquid and clean water source, which can adjust mixed fertilizers of different concentrations in real time liquid; the irrigation device in the fertilizer transfer subsystem includes a fertilizer tank, and an irrigation pump and a fertilizer transfer pipeline are set at the same time, and according to the actual irrigation conditions, multiple irrigation devices are set up to implement continuous irrigation in multiple planting areas; fertilizer transfer The subsystem sets up multiple irrigation lines according to actual irrigation needs, and implements continuous irrigation operations for multi-variety and multi-greenhouse planting.

A water and fertilizer irrigation method for greenhouse planting, the fertilizer preparation and supply subsystem prepares mixed fertilizer solutions with different EC values and pH values; the irrigation control subsystem controls the output pipeline of the mixed fertilizer solution prepared by the fertilizer preparation and supply subsystem; the fertilizer transfer pipeline passes through Switch different irrigation devices or irrigation lines, sequentially irrigate planting areas or crops with similar irrigation conditions, and drip-irrigate mixed fertilizer solutions with different EC values and pH values to different planting areas of different crops. When switching irrigation operations of different planting areas and different crops, it is not necessary to stop the operation of the fertilizer preparation and supply subsystem. Through the same irrigation system, without stopping the fertilizer supply of the fertilizer supply subsystem, switch different irrigation devices or irrigation lines, switch the planting areas or crops with similar irrigation conditions in turn, and reduce the EC value or pH value of the mixed fertilizer solution The adverse effects of fluctuations on the irrigation of crops, at the same time, complete the irrigation operations of multi-variety, multi-planting divisions, and multi-greenhouse planting.

Finally, this application is only a preferred implementation, and is not intended to limit the protection scope of the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included within the protection scope of the present invention.

Claims (13)

1. a kind of chamber planting water and fertilizer irrigation system, it is characterised in which includes：Introduce fertilizer solution and/or clear water to make in real time Fertilizer that is standby and exporting the mixed fertilizer feed liquid with specific EC values and pH value prepares supply subsystem, and controls the fertilizer system Available enters the irrigation control subsystem of specific planting area to the mixed fertilizer feed liquid that subsystem is exported.

2. a kind of chamber planting water and fertilizer irrigation system as claimed in claim 1, it is characterised in that：The fertilizer prepares supply subsystem Including fertilizer solution intake line, clear water intake line and fertilizer solution output pipe, the fertilizer solution intake line and clear water input Pipeline is connected with fertilizer solution output pipe respectively, arranges fertilizer solution between the fertilizer solution intake line and fertilizer solution output pipe Detection feedback regulation pipeline.

3. a kind of chamber planting water and fertilizer irrigation system as claimed in claim 2, it is characterised in that：The fertilizer solution intake line includes Mother liquor tank (1) and venturi fertilzer sucking pipe (6), venturi fertilzer sucking pipe (6) are connected with the fertilizer solution output pipe, the mother Y-type filter (2), suspended body flowmeter (3), fertilizer flow control valve is set gradually between flow container (1) and venturi fertilzer sucking pipe (6) And fertilizer solution break-make electromagnetic valve (5) (4).

4. a kind of chamber planting water and fertilizer irrigation system as claimed in claim 2, it is characterised in that：On the clear water intake line successively Be provided with input water source flow control valve (7) and be input into water source on liquidometer (8), on the input water source liquidometer (8) with it is described Fertilizer solution output pipe is connected.

5. a kind of chamber planting water and fertilizer irrigation system as claimed in claim 3, it is characterised in that：The fertilizer solution detects feedback regulation Pipeline is provided with the EC values of the mixed fertilizer feed liquid in the detection fertilizer solution output pipe and EC meters (13) of pH value and pH meter (14), The input of venturi fertilzer sucking pipe (6) is connected by pipeline with the outfan of fertilizer solution output pipe, and forms loop, Pressure gauge (12) is set on the loop.

6. a kind of chamber planting water and fertilizer irrigation system as claimed in claim 1, it is characterised in that：The irrigation control subsystem is provided with At least one irrigates electromagnetic valve.

7. a kind of chamber planting water and fertilizer irrigation system as claimed in claim 6, it is characterised in that：Also include and irrigation control The fertilizer transfer subsystem of the execution irrigation operation of system connection, the fertilizer transfer subsystem include and the irrigation electromagnetic valve The defeated filling circuit of correspondence connection, the defeated filling circuit are provided with defeated filling device, and the defeated filling device includes fertilizer tank (19), described Liquidometer (17), liquidometer under the fertilizer tank under liquidometer on fertilizer tank (16) and fertilizer tank is respectively equipped with fertilizer tank (19) (17) one end connection irrigation pump (18).

8. a kind of chamber planting water and fertilizer irrigation system as claimed in claim 7, it is characterised in that：The lower end of fertilizer tank (19) sets There are fertilizer shifting pump (20), one end connection fertilizer irrigation pipeline (21) of fertilizer shifting pump (20), the fertilizer irrigation pipe Road (21) connects next defeated filling device.

9. such as a kind of chamber planting water and fertilizer irrigation system of claim 7 or 8, it is characterised in that：In the defeated filling circuit at least Comprising a defeated filling device.

10. a kind of chamber planting water and fertilizer irrigation system as claimed in claim 9, it is characterised in that：The fertilizer transfer subsystem is extremely A defeated filling circuit is included less, and per bar, the defeated circuit that fills is correspondingly arranged that control strip is defeated to fill the irrigation electricity that circuit performs irrigation operation Magnet valve.

A kind of 11. chamber planting water and fertilizer irrigation methods, its specific irrigation method are as follows：

S1, pass through fertilizer solution intake line and clear water intake line respectively and is introduced into fertilizer and/or clear water to mix in flow container (9), obtain To mixed fertilizer feed liquid；

What S2, the EC values for counting the mixed fertilizer feed liquid that (13) and pH meter (14) are detected according to EC and pH value and setting value were compared As a result, the amount of the fertilizer and/or water being introduced in mixed flow container (9) is adjusted, so as to the EC values and pH value that adjust mixed fertilizer feed liquid reach Setting value；

S3, by fertilizer solution output pipe by the mixed fertilizer feed liquid for reaching setting value in mixed flow container (9) export to irrigation control System；

S4, the opened/closed state by controlling irrigation electromagnetic valve, control mixed fertilizer feed liquid enter fertilizer and shift subsystem, fill Irrigate a kind of planting area of crop；

S5, complete a kind of irrigation of crop after, the EC values of mixed fertilizer feed liquid and pH value in the mixed flow container (9) of adjustment, the defeated filling line of switching The planting area of another crop is irrigated on road, repeat step S4.

12. as claim 11 a kind of chamber planting water and fertilizer irrigation method, it is characterised in that in step S4 irrigate electromagnetic valve control Mixed fertilizer liquid shifts the concrete mode irrigated of subsystem into fertilizer：

S41, opening irrigate electromagnetic valve, and the mixed fertilizer feed liquid that EC values and pH value reach setting value is introduced fertilizer transfer subsystem One defeated filling circuit；

S42, mixed fertilizer feed liquid are entered in the defeated fertilizer tank (19) for filling circuit, and mixed fertilizer feed liquid Jing in fertilizer tank (19) is irrigated Crop in pump (18) drip irrigation planting area (23), and it is input into the flow of fertilizer solution and irrigation pump (18) output in fertilizer tank (19) The flow of fertilizer solution is equal；

After crop irrigation in S43, planting area (23) is finished, irrigation pump (18) is closed, open fertilizer shifting pump (20), mixing Fertilizer solution Jing fertilizer shifting pump (20) is entered in fertilizer irrigation pipeline (21), and be input in fertilizer tank (19) flow of fertilizer solution with The flow of fertilizer shifting pump (20) output fertilizer solution is identical；

S44, mixed fertilizer feed liquid Jing fertilizer irrigation pipeline (21) enter next defeated filling device, irrigate the another kind that the crop is located Growing area domain (24)；

Repeat step S42-S44, until complete the irrigation operation of all planting areas of the crop.

13. as claim 11 or 12 a kind of chamber planting water and fertilizer irrigation method, it is characterised in that in step S5 adjustment mixing Fertilizer solution EC value and pH value, the concrete grammar of the defeated filling circuit of switching are：

S51, repeat step S1-S3, adjust the EC values and pH value of mixing mixed fertilizer feed liquid in flow container (9) to close another setting Value；

S52, closing control have completed the irrigation electromagnetic valve of the defeated filling circuit of irrigation operation, open another irrigation electromagnetic valve；

Mixed fertilizer feed liquid in S53, mixed flow container (9) enters another defeated filling circuit that fertilizer shifts subsystem, to another crop Planting area performs irrigation operation, repeat step S4；

After the completion of the planting area of the crop is all irrigated, repeat step S5 carries out the irrigation operation of next crop.