Heating water and fertilizer system of facility agriculture equipment

Abstract

The utility model relates to the technical field of facility agriculture, in particular to a heating water and fertilizer system of facility agriculture equipment, which comprises a water and fertilizer drip irrigation system, a water and fertilizer water supply system, a water and fertilizer water supply system, a water and fertilizer water supply system and a water and fertilizer water supply system, the drip irrigation head can provide water and fertilizer mixed liquid from the interior of the water and fertilizer tank for a substrate of crops; the heating system comprises a heat source and a heat dissipation pipe assembly, and the heat source can heat the water and fertilizer mixed liquid in the water and fertilizer tank and supply heat to the facility agricultural equipment in the mode that the water and fertilizer mixed liquid flows through the heat dissipation pipe assembly; wherein the drip irrigation pipe can be communicated with the water and fertilizer tank through the radiating pipe assembly. By means of the structure, fusion of a heating system and a water and fertilizer drip irrigation system can be achieved through communication of the drip irrigation pipe and the heat dissipation pipe assembly. In this way, in the overwintering planting period, the heating system is used for meeting the heating requirement and also used for meeting the requirement of a fertilizer and heat integrated supply mechanism for the temperature.

Description

Technical Field

[0001] The utility model relates to the field of facility agriculture, and specifically provides a heating water and fertilizer system for facility agriculture equipment. Background Art

[0002] Facility agriculture greenhouses mainly achieve efficient production of crops under relatively controllable environmental conditions by introducing operation and maintenance methods that are more suitable for crops. The introduced operation and maintenance methods mainly include control of crops and / or the environment in which they are located, such as temperature, light, ventilation and irrigation.

[0003] Taking irrigation as an example, the most advanced operation and maintenance method is to provide warm water fertilizer to crops. Warm water fertilizer mixes fertilizer with irrigation water so that the fertilizer reaches the substrate of crops evenly during irrigation. On this basis, the irrigation quality is further improved by reasonably controlling the temperature of the water-fertilizer mixture.

[0004] However, current facility agriculture equipment has such problems in the warm water and fertilizer irrigation process: since it is usually necessary to separately configure corresponding heating components to increase the temperature of the water-fertilizer mixture, there are problems such as increased costs and insufficiently compact structure.

[0005] Accordingly, the art needs a new technical solution to solve the above problems. Utility Model Content

[0006] The utility model aims to at least partially solve the above-mentioned technical problems and / or solve at least part of the above-mentioned technical problems. Specifically, it provides a structure that can optimize the performance of facility agricultural equipment during its warm water fertilizer irrigation function to at least a certain extent.

[0007] In view of this, the utility model provides a heating water and fertilizer system for facility agriculture equipment, the heating water and fertilizer system comprising: a water and fertilizer drip irrigation system, which comprises a water and fertilizer tank, a drip irrigation pipe and a drip irrigation head arranged on the drip irrigation pipe, the drip irrigation head can provide a water and fertilizer mixture from the water and fertilizer tank to the substrate of the crop; and a heating system, which comprises a heat source and a heat dissipation pipe assembly, the heat source can heat the water and fertilizer mixture in the water and fertilizer tank and heat the facility agriculture equipment by flowing through the heat dissipation pipe assembly; wherein the drip irrigation pipe can be connected to the water and fertilizer tank through the heat dissipation pipe assembly.

[0008] Through such a configuration, it is possible to achieve the integration of the heating system and the water and fertilizer drip irrigation system through the connection between the drip irrigation pipe and the heat dissipation pipe assembly. In this way, during the winter planting period, the heating system is used to meet both the heating demand and the temperature demand of the integrated fertilizer and heat supply mechanism. In the season / time period when there is no heating demand, the temperature demand of the integrated fertilizer and heat supply mechanism can be met with the help of the existing heating system.

[0009] It is understandable that those skilled in the art can determine the structural form of the drip irrigation pipe and the heat dissipation pipe assembly, the relative position between the two, the communication mode between the two, etc. according to actual needs. For example, the communication mode between the two may include one or more.

[0010] For the above-mentioned heating water fertilizer system, in a possible implementation manner, the heating water fertilizer system includes a valve assembly, the valve assembly includes a first drip irrigation valve and a second drip irrigation valve, and the drip irrigation pipe can be connected to the heat dissipation pipe assembly through the first drip irrigation valve and / or the second drip irrigation valve.

[0011] With such a configuration, it is possible to achieve communication between the drip irrigation pipe and the heat dissipation pipe assembly through the two drip irrigation valves.

[0012] It is understandable that those skilled in the art can determine the location of the first drip irrigation valve and the second drip irrigation valve and the corresponding communication mode between the drip irrigation pipe and the heat dissipation pipe assembly according to actual needs.

[0013] For the above-mentioned heating water-fertilizer system, in a possible implementation manner, observed along the flow direction of the water-fertilizer mixture, the first drip irrigation valve or the second drip irrigation valve is arranged at a position close to the downstream side of the heat dissipation pipe assembly.

[0014] Through such a structure, when there is a demand for heating, the water-fertilizer mixture as a circulating medium can be fully heat-exchanged with the air before irrigation. In this way, the temperature of the water-fertilizer mixture can be more compatible with the irrigation demand.

[0015] For the above-mentioned heating water fertilizer system, in a possible implementation manner, the heat dissipation pipe assembly includes a first part and a second part, at least a part of the second part has a height greater than the first part in an assembled state, wherein the first drip irrigation valve is arranged on the first part and / or the second drip irrigation valve is arranged on the second part.

[0016] With such a configuration, it is possible to reduce the residual pressure of water in the drip irrigation pipe by connecting the heat dissipation pipe assembly to the drip irrigation pipe at a high position. For example, when the water pressure in the heating system is high, it is expected that the residual pressure can be reduced by the height difference, thereby being more compatible with the low residual pressure requirement of irrigation.

[0017] It is understandable that those skilled in the art can determine the structural form of the first part and the second part and the specific way of forming the height difference between the two parts according to actual needs. For example, the heights of various parts of the first / second part can be the same or different.

[0018] For the above-mentioned heating water fertilizer system, in a possible implementation manner, the valve assembly includes a first water supply pipe and a second water supply pipe arranged on the first part, and the drip irrigation pipe can be connected to the first part at a position located between the first water supply pipe and the second water supply pipe.

[0019] Through such a structure, it is possible to ensure that drip irrigation can be reliably implemented both when there is a heating demand and when there is no heating demand. Specifically, when there is a heating demand, both the first water supply pipe and the second water supply pipe are opened, and when there is no heating demand, one of the first water supply pipe and the second water supply pipe is opened to ensure irrigation demand and the other is closed to prevent the water-fertilizer mixture from entering other parts of the heat dissipation pipe assembly that mainly corresponds to the heating demand.

[0020] For the above-mentioned heating water fertilizer system, in a possible implementation manner, the first part includes a low-level heat dissipation pipe and a heat dissipation pipe water inlet pipe arranged between the water fertilizer tank and the low-level heat dissipation pipe,

[0021] Wherein, the first water supply pipe and the second water supply pipe are arranged on the water inlet pipe of the heat dissipation pipe.

[0022] Through such a configuration, a possible structural form of the first part is given.

[0023] For the above-mentioned heating water fertilizer system, in a possible implementation manner, the second part includes a high-level pipe of the radiator pipe connected to the low-level pipe of the radiator pipe and having a height higher than the low-level pipe of the radiator pipe, and the second drip irrigation valve is arranged at the high-level pipe of the radiator pipe or near the high-level pipe of the radiator pipe.

[0024] Through such a configuration, a possible structural form of the second part is given.

[0025] For the above-mentioned heating water and fertilizer system, in a possible implementation manner, the second part includes: a radiator riser, which is arranged between the radiator low-level pipe and the radiator high-level pipe; and / or a radiator return pipe, which is arranged between the radiator high-level pipe and the water and fertilizer tank, and the second drip irrigation valve is arranged on the radiator return pipe.

[0026] Through such a composition, a possible structural form of the second part is given.

[0027] For the above-mentioned heating water and fertilizer system, in a possible implementation, the heating water and fertilizer system includes a water supply pump, which can guide the water-fertilizer mixture in the water-fertilizer tank into the heat dissipation pipe assembly and / or the drip irrigation pipe, wherein the water supply pump is a variable frequency water supply pump.

[0028] With such a configuration, it is possible to meet the water supply pressure requirements in both modes with one water supply pump.

[0029] For the above-mentioned heating water fertilizer system, in a possible implementation manner, the heat source is an air source heat pump.

[0030] Through such a structure, the impact of high temperature on crops can be reduced and the safety of the heating, water and fertilizer system can be improved.

[0031] For the above-mentioned heating water and fertilizer system, in a possible implementation manner, a drip irrigation head is provided on the drip irrigation pipe, and the drip irrigation head can provide a water-fertilizer mixture from the water-fertilizer tank to the substrate of the crop.

[0032] Through such a structure, a specific structural form for drip irrigation is provided.

[0033] For the above-mentioned heating water and fertilizer system, in a possible implementation manner, the heating water and fertilizer system includes a return water tank, and the return water tank can be connected to the water and fertilizer tank so as to return the collected surplus water and fertilizer mixture to the water and fertilizer tank.

[0034] With such a structure, it is possible to effectively recover the surplus water-fertilizer mixture.

[0035] For the above-mentioned heating water fertilizer system, in a possible implementation manner, the heating water fertilizer system includes a return water tank connecting pipe, a return water valve is provided on the return water tank connecting pipe, and the return water tank is connected to the water fertilizer tank through the return water tank connecting pipe.

[0036] Through such a structure, a specific implementation method for connecting the return water tank with the water fertilizer tank is provided.

[0037] In the preferred embodiment of the utility model, the heating water and fertilizer system of the facility agriculture equipment realizes the integration of the water and fertilizer drip irrigation system and the heating system. On this basis, the heat pipe assembly of the heating system adopts the bottom supply and top return heating mode, which effectively consumes the water supply pressure and better adapts to the low-pressure demand corresponding to drip irrigation. By connecting the drip irrigation with the heat pipe assembly near the downstream side, it can be ensured that when there is a heating demand, the temperature of the water and fertilizer liquid in the heat pipe assembly is fully exchanged with the air. In this way, when the water and fertilizer mixture reaches the drip irrigation position (substrate), the temperature is more reasonable and the reliability of irrigation is thus guaranteed. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the following briefly introduces the drawings required for the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work. In the drawings:

[0039] Figure 1 A schematic diagram showing the structure of a heating water and fertilizer system for facility agricultural equipment according to an embodiment of the utility model Figure 1 ;

[0040] Figure 2 A schematic diagram showing the structure of a heating water and fertilizer system for facility agricultural equipment according to an embodiment of the utility model Figure 2 ;as well as

[0041] Figure 3 A schematic diagram showing the structure of a heating water and fertilizer system for facility agricultural equipment according to an embodiment of the utility model Figure 3 .

[0042] In the figure:

[0043] 100. Heating, water and fertilizer system;

[0044] 1. Water and fertilizer tank;

[0045] 2. Drip irrigation pipe;

[0046] 3. Drip irrigation head;

[0047] 4. Heat source;

[0048] 51. Radiator water inlet pipe; 52. Radiator low pipe; 53. Radiator riser; 54. Radiator high pipe; 55. Radiator water return pipe;

[0049] 6. Return water tank;

[0050] 7. Return tank connecting pipe;

[0051] 8. Return pipe;

[0052] 9. Water supply pump;

[0053] 101, first water supply valve; 102, second water supply valve; 103, first drip irrigation valve; 104, second drip irrigation valve; 105, return valve;

[0054] 11. Control department;

[0055] 200, matrix;

[0056] 300. Crops. DETAILED DESCRIPTION

[0057] The preferred embodiments of the present invention are described below with reference to the accompanying drawings. It should be understood by those skilled in the art that these embodiments are only used to explain the technical principles of the present invention and are not intended to limit the protection scope of the present invention.

[0058] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be interpreted as limiting the present invention.

[0059] Those skilled in the art will appreciate that, unless expressly stated, the singular forms "one", "said", and "the" used herein may also include plural forms. It should be further understood that the term "comprising" used in the specification of the present utility model refers to the presence of the features, integers, steps, operations, elements and / or components, but does not exclude the presence or addition of one or more other features, integers, steps, operations, elements, components and / or groups thereof. It should be understood that when we refer to an element as being "connected" or "coupled" to another element, it may be directly connected or coupled to the other element, or there may be an intermediate element. In addition, the "connection" or "coupling" used here may include wireless connection or coupling. The term "and / or" used here includes any unit and all combinations of one or more associated listed items.

[0060] Those skilled in the art will appreciate that, unless otherwise defined, all terms (including technical terms and scientific terms) used herein have the same meaning as those generally understood by those skilled in the art to which the present invention belongs. It should also be understood that terms such as those defined in general dictionaries should be understood to have meanings consistent with those in the context of the prior art, and will not be interpreted with idealized or overly formal meanings unless defined as herein.

[0061] It should be noted that in the description of the present invention, the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like indicating directions or positional relationships are based on the directions or positional relationships shown in the drawings, which are only for the convenience of description, and do not indicate or imply that the device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0062] In addition, it should be noted that in the description of the present invention, unless otherwise clearly specified and limited, the terms "installation", "setting", and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection, an indirect connection through an intermediate medium, or the internal connection of two components. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0063] In addition, in order to better illustrate the present invention, many specific details are given in the specific embodiments below. Those skilled in the art should understand that the present invention can also be implemented without certain specific details. In some examples, the principles of air source heat pumps, variable frequency water supply pumps, etc., which are well known to those skilled in the art, are not described in detail in order to highlight the main purpose of the present invention.

[0064] Main reference Figure 1 and Figure 3 , Figure 1 A schematic diagram showing the structure of a heating water and fertilizer system for facility agricultural equipment according to an embodiment of the utility model Figure 1 , Figure 2 A schematic diagram showing the structure of a heating water and fertilizer system for facility agricultural equipment according to an embodiment of the utility model Figure 2 , Figure 3 A schematic diagram showing the structure of a heating water and fertilizer system for facility agricultural equipment according to an embodiment of the utility model Figure 3. The heating and water-fertilizer system of facility agricultural equipment mainly includes a water-fertilizer drip irrigation system and a heating system. Among them, the water-fertilizer drip irrigation system is mainly used to achieve water-fertilizer integration. Specifically, agricultural fertilizers are mixed into irrigation water to fertilize the substrate of crops in synchronization with irrigation. Since the growth of crops in agriculture requires temperature and winter planting is one of the common problems currently faced by agriculture, it is usually necessary to heat facility agricultural equipment. The irrigation function and fertilization function corresponding to the water-fertilizer drip irrigation system are continuous functions, and the heating function corresponding to the heating system is a function that is only used in winter and other seasons, so it is an intermittent function. In addition, compared with the temperature requirements of the integrated water-fertilizer-heat supply mechanism, the heating system has the characteristics of large water flow and large resistance along the way when meeting the heating needs of facility agricultural equipment. Therefore, it is usually required to use a large flow and high-lift water supply pump, while the drip irrigation water flow of the water-fertilizer drip irrigation system is small and the residual pressure is small, so a small flow and low-lift water supply pump is usually used. Therefore, the current systems for heating and irrigation are usually two independent systems. Based on this, the utility model can switch the operation mode of the water pump according to different scenarios by selecting a variable frequency water pump as the water supply pump 9. In addition, the heat source of the conventional heating system uses a boiler, which is prone to fertilizer deterioration due to the high temperature of the boiler. In the utility model, the heat source 4 uses an air source heat pump, the output temperature is about 40°C (basically does not affect the quality of the fertilizer) and the output temperature is more stable, thereby ensuring the quality of the water-fertilizer integration mechanism.

[0065] In a possible implementation, the heating and water-fertilizer system 100 of the facility agriculture equipment of the utility model realizes the integration of the water-fertilizer drip irrigation system and the heating system by adding relevant pipelines and valve components between the water-fertilizer drip irrigation system and the heating system. This reduces the complexity of the equipment (such as saving a water supply pump and related pipes, etc.), saves space, and improves the efficiency of land use, which is expected to increase the crop yield per unit area of ​​land. In this way, during the winter planting period, the temperature requirements of the integrated water-fertilizer-heat supply mechanism can be met on the basis of ensuring the heating demand. During the non-winter planting period, the temperature requirements of the integrated water-fertilizer-heat supply mechanism can be met by borrowing the existing system.

[0066] Figures 1 to 3 As shown, in a possible embodiment, the water and fertilizer drip irrigation system in the heating water and fertilizer system mainly includes a water and fertilizer tank 1, a drip irrigation pipe 2 and a drip irrigation head 3. The upstream side of the drip irrigation pipe 2 is connected to the water and fertilizer tank 1, and the downstream side of the drip irrigation pipe 2 is provided with a drip irrigation head 3. The drip irrigation head 3 can directly irrigate the water-fertilizer mixture onto the substrate 200 of the crop 300.

[0067] In a possible embodiment, the heating system in the heating water fertilizer system mainly includes a heat source 4 and a heat pipe assembly. The heat source 4 is preferably an air source heat pump. The heat pipe assembly mainly includes a heat pipe water inlet pipe 51, a heat pipe low-level pipe 52, a heat pipe riser 53, a heat pipe high-level pipe 54 and a heat pipe return pipe 55 connected in sequence. The heat pipe water inlet pipe 51 and the heat pipe return pipe 55 are respectively connected to the air source heat pump to form a heating circuit.

[0068] In a possible embodiment, the heating water and fertilizer system also includes a return water tank 6, a return water tank connecting pipe 7, and a return water pipe 8. The return water tank 6 includes two return water tanks located on both sides of the substrate. After the surplus water and fertilizer mixture of drip irrigation is collected by the two return water tanks 6, the two return waters corresponding to the two return water tanks are merged through the return water tank connecting pipe 7 and returned to the water and fertilizer tank 1 through the return water pipe 8.

[0069] It should be noted that in the preferred embodiment of the present invention, considering that the downstream side of the water-fertilizer drip irrigation system drips fertilizers that are directly irrigated onto the substrate of the crops, and considering the impact of temperature on the root system of the crops, the water intake of the drip irrigation pipe 2 is set at a position close to the downstream side (end) of the heating pipe (for example, in this example, the drip irrigation pipe 2 is connected to the heat dissipation pipe return pipe 55). In this way, the hot water provided by the heating system can fully exchange heat with the air, thereby lowering the temperature of the water-fertilizer mixture and ensuring that the temperature level is reached for direct irrigation.

[0070] It should be noted that in the preferred embodiment of the present invention, since the drip irrigation of the water-fertilizer drip irrigation system requires a relatively small residual pressure of the water-fertilizer mixture, the heat dissipation pipe assembly adopts a downward delivery and upward return method (the high-position pipe 54 of the heat dissipation pipe is located on the downstream side of the low-position pipe 52 of the heat dissipation pipe), and the arrangement of the heat dissipation pipe assembly is used to fully offset the pressure of the water flow to ensure that the remaining residual pressure is more compatible with the drip irrigation demand. Combined with the aforementioned arrangement of the water intake of the drip irrigation pipe 2 at a position close to the downstream side (end) of the heating pipe, it can be seen that the water intake of the drip irrigation pipe 2 is located at the top of the heat dissipation pipe assembly.

[0071] In a possible implementation, the heating water fertilizer system also includes a valve assembly, which mainly includes a first water supply valve 101, a second water supply valve 102, a first drip irrigation valve 103, a second drip irrigation valve 104 and a return valve 105. The function of the valve assembly is described below in combination with the two modes of the heating water fertilizer system.

[0072] Based on the above structure, in a possible implementation, the heating and water-fertilizer system of the facility agriculture equipment of the utility model can operate in the following two modes:

[0073] 1. Three-in-one mode, specifically, including irrigation function, fertilization function and heating function.

[0074] In this mode, irrigation water and fertilizer are first mixed in proportion in the water-fertilizer tank 1 to make a water-fertilizer mixture. After that, the air source heat pump heats the water-fertilizer mixture to the desired temperature (such as about 40°C in this example). At this time, the control unit 11 (such as the remote control system controller, etc.) opens the first water supply valve 101, the second water supply valve 102, and the return valve 105, and starts the water supply pump 9 to operate in a high-load mode, thereby forming a hot water circulation of the heating system. At the same time, the control unit 11 closes the first drip irrigation valve 103 and opens the second drip irrigation valve 104, and uses the residual pressure of the heat pipe return pipe 55 in the heat pipe assembly to drip irrigate the matrix of the crop. The surplus water-fertilizer mixture of drip irrigation is collected by the two return water tanks 6 on both sides of the matrix, and the two return waters corresponding to the two return water tanks are merged through the return water tank connecting pipe 7, and returned to the water-fertilizer tank 1 through the return water pipe 8.

[0075] 2. Two-in-one mode, specifically, the irrigation function and fertilization function without heating demand. In this mode, the water-fertilizer tank 1 contains a water-fertilizer mixture at room temperature. The control unit 11 opens the first water supply valve 101, the first drip irrigation valve 103, and the return valve 105, and closes the second water supply valve 102 and the second drip irrigation valve 104, and controls the water supply pump 9 to operate in a low-load mode, that is, only the pressure required for drip irrigation is required. Since there is no heating demand, no flow is required in the low-level pipe 52 of the heat dissipation pipe, the riser 53 of the heat dissipation pipe, and the high-level pipe 54 of the heat dissipation pipe, so that the power consumption of the water supply pump can be reduced. Based on this, the water-fertilizer mixture drips the matrix 200 through the drip irrigation pipe 2 and the drip irrigation head 3, thereby realizing the irrigation and fertilization functions for crops. After the surplus water-fertilizer mixture is collected by the two return water tanks 6 on both sides of the matrix, the two return waters of the two return water tanks 8 are merged through the return water tank connecting pipe 7, and finally flow back to the water-fertilizer tank 1 through the return water pipe 8.

[0076] It can be seen that in the preferred embodiment of the present invention, by integrating the water-fertilizer drip irrigation system and the heating system, it is possible to seek to serve the temperature requirements of the integrated water-fertilizer-heat supply mechanism through the existing heating equipment. Specifically, under the premise that there is a possibility of exchange at the heat level, based on the present invention, the heat in the integrated water-fertilizer-heat supply mechanism is obtained by heat exchange between the water-fertilizer drip irrigation system and the heating system. The structure of the facility agriculture equipment is simplified and the utilization rate of the heating system is improved. In addition, by analyzing the temperature and pressure at the drip irrigation level corresponding to the water-fertilizer drip irrigation system, such as setting the orientation, direction and other elements of the heating system, it is ensured that the integrated water-fertilizer system and the heating system can operate reliably.

[0077] So far, the technical solution of the present invention has been described in conjunction with the preferred embodiments shown in the accompanying drawings. However, it is easy for those skilled in the art to understand that the protection scope of the present invention is obviously not limited to these specific embodiments. Without departing from the principle of the present invention, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after these changes or substitutions will fall within the protection scope of the present invention.

Claims

1. A heating water and fertilizer system for facility agricultural equipment, characterized in that: The heating water fertilizer system comprises: A water-fertilizer drip irrigation system, comprising a water-fertilizer tank, a drip irrigation pipe, and a drip irrigation head arranged on the drip irrigation pipe, wherein the drip irrigation head can provide a water-fertilizer mixture from the water-fertilizer tank to a substrate of a crop; and A heating system, comprising a heat source and a heat dissipation pipe assembly, wherein the heat source can heat the water-fertilizer mixture in the water-fertilizer tank and heat the facility agriculture equipment by flowing through the heat dissipation pipe assembly; Wherein, the drip irrigation pipe can be connected to the water fertilizer tank through the heat dissipation pipe assembly.

2. The heating water fertilizer system according to claim 1, characterized in that: The heating water fertilizer system comprises a valve assembly, and the valve assembly comprises a first drip irrigation valve and a second drip irrigation valve. The drip irrigation pipe can be connected to the heat dissipation pipe assembly through the first drip irrigation valve and / or the second drip irrigation valve.

3. The heating water fertilizer system according to claim 2, characterized in that: Observing along the flow direction of the water-fertilizer mixture, the first drip irrigation valve or the second drip irrigation valve is arranged at a position close to the downstream side of the heat dissipation pipe assembly.

4. The heating water fertilizer system according to claim 2 or 3, characterized in that: The heat pipe assembly comprises a first part and a second part, wherein at least a part of the second part has a height greater than that of the first part in an assembled state, Wherein, the first drip irrigation valve is arranged on the first part and / or the second drip irrigation valve is arranged on the second part.

5. The heating water fertilizer system according to claim 4, characterized in that: The valve assembly includes a first water supply pipe and a second water supply pipe disposed on the first portion, and the drip irrigation pipe can be communicated with a position of the first portion located between the first water supply pipe and the second water supply pipe.

6. The heating water fertilizer system according to claim 5, characterized in that: The first part includes a low-position heat dissipation pipe and a heat dissipation pipe water inlet pipe arranged between the water fertilizer tank and the low-position heat dissipation pipe. Wherein, the first water supply pipe and the second water supply pipe are arranged on the water inlet pipe of the heat dissipation pipe.

7. The heating water fertilizer system according to claim 6, characterized in that: The second part includes a high-position heat dissipation pipe connected to the low-position heat dissipation pipe and having a height higher than the low-position heat dissipation pipe. The second drip irrigation valve is arranged at the high-position heat dissipation pipe or near the high-position heat dissipation pipe.

8. The heating water fertilizer system according to claim 7, characterized in that: The second part includes: A heat dissipation pipe riser, which is arranged between the heat dissipation pipe lower pipe and the heat dissipation pipe upper pipe; and / or The heat dissipation pipe water return pipe is arranged between the heat dissipation pipe high-level pipe and the water fertilizer tank, and the second drip irrigation valve is arranged on the heat dissipation pipe water return pipe.

9. The heating water fertilizer system according to claim 1, characterized in that: The heating water fertilizer system comprises a water supply pump, which can guide the water fertilizer mixture in the water fertilizer tank to the heat dissipation pipe assembly and / or the drip irrigation pipe. Wherein, the water supply pump is a variable frequency water supply pump.

10. The heating water fertilizer system according to claim 1, characterized in that: The heat source is an air source heat pump.

11. The heating water fertilizer system according to claim 1, characterized in that: The drip irrigation pipe is provided with a drip irrigation head, and the drip irrigation head can provide the water-fertilizer mixture from the water-fertilizer tank to the substrate of the crop.

12. The heating water fertilizer system according to claim 1, characterized in that: The heating water-fertilizer system comprises at least one return water tank, which can be communicated with the water-fertilizer tank so as to return the collected surplus water-fertilizer mixture to the water-fertilizer tank.

13. The heating water fertilizer system according to claim 12, characterized in that: The heating water fertilizer system comprises a return water tank connecting pipe, on which a return water valve is arranged, and the return water tank is connected to the water fertilizer tank via the return water tank connecting pipe.

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