A rice field "water saving-yield increasing-carbon capture" system based on bubble plume

Abstract

The application discloses a rice field "water saving-yield increasing-carbon capturing" system based on bubble plume, which comprises a point source bubble plume carbon collecting and oxygen increasing mechanism, a bubble plume barrier interception and collection mechanism, and an intelligent control module.The point source bubble plume carbon collecting and oxygen increasing mechanism can drive carbon floating substances on the surface of the rice field and increase the oxygen content of the rice field; the bubble plume barrier interception and collection mechanism can intercept and recycle carbon substances in the drainage ditch; and the intelligent control module can control the operation of the point source bubble plume carbon collecting and oxygen increasing mechanism and the bubble plume barrier interception and collection mechanism.The operation of the point source bubble plume carbon collecting and oxygen increasing mechanism and the bubble plume barrier interception and collection mechanism can increase the oxygen content of the water in the rice field, improve the utilization rate of the water in the rice field, improve the water environment, save water and increase the yield of rice, automatically drive and intercept algae and other carbon floating substances, complete the interception of the bottom mud by the water retaining wall, realize all-round carbon capturing of the drainage ditch, reduce agricultural non-point source pollution, realize intelligent management of the "water-carbon" in the rice field, and be beneficial to reducing pollution and carbon, reduce production cost and improve benefits.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of agricultural water conservancy, in particular to a rice field "water saving-yield increasing-carbon capturing" system based on bubble plume. BACKGROUND

[0002] Rice is one of the three major food crops in China, with a large planting area and wide distribution.

[0003] Rice planting consumes a large amount of water, accounting for more than 65% of agricultural irrigation water consumption in China. The overgrowth of duckweed, algae and other floating carbon materials in rice fields can significantly increase the consumption of dissolved oxygen in water, leading to a sharp decrease in oxygen content in the rice field ecosystem, and ultimately causing the rice roots to suffer from oxygen deficiency stress, seriously affecting their normal growth and development. To ensure the normal growth of rice, the irrigation and drainage frequency of the rice field must be increased, resulting in low water use efficiency and further increasing the pressure on agricultural water use.

[0004] Although the floating carbon materials such as duckweed and algae in the rice field can reduce the water temperature and pH value of the rice field to some extent, improve the nitrogen utilization rate, increase the nitrogen sink in the rice field, and increase the yield of rice, the overuse of chemical fertilizers and the imperfect management system in the rice field lead to the overgrowth of duckweed and algae, seriously affecting the ecological environment of the rice field and the normal growth of rice, and causing a significant decrease in rice yield and quality. In addition, duckweed, algae and other organic carbon materials that are difficult to utilize in the rice field will further increase the carbon emissions of the rice field. To prevent yield reduction, artificial salvage of duckweed, algae and other floating carbon materials in the rice field is required, which is inefficient. The water in the rice field rich in algae and other small floating materials directly discharged into rivers will cause agricultural non-point source pollution such as water pollution, which is difficult to meet the requirements of green agriculture, and also leads to the loss of a large amount of carbon materials.

[0005] Based on the above problems, it is necessary to develop a rice field "water saving-yield increasing-carbon capturing" system based on bubble plume. SUMMARY

[0006] The technical problem to be solved by the present application is to provide a rice field "water saving-yield increasing-carbon capturing" system based on bubble plume to solve the problems of the prior art. The system can realize intelligent management of "water-carbon" in the rice field, improve the water use efficiency of the rice field, achieve water saving and yield increasing, reduce pollution and carbon, complete all-round carbon capture in the rice field, reduce agricultural non-point source pollution, successfully build a sustainable management mode of farmland-ecology-economy system, and realize the ecological mode of green and low-carbon development of agriculture.

[0007] To solve the above technical problems, the technical scheme adopted by the present application is:

[0008] A rice field "water saving-yield increasing-carbon capturing" system based on bubble plume, comprising:

[0009] The point source bubble plume carbon collection and oxygen increasing mechanism is used for driving carbon substances floating on the surface of the paddy field and increasing the oxygen content of the paddy field.

[0010] The bubble plume barrier interception and collection mechanism is used for intercepting and recycling the carbon substances in the drainage ditch.

[0011] The intelligent control module controls the point source bubble plume carbon collection and oxygen increasing mechanism and the bubble plume barrier interception and collection mechanism to operate through radio control.

[0012] The point source bubble plume carbon collection and oxygen increasing mechanism comprises an air charging pump, a gas conveying hose and a point source bubble plume generator, the output end of the air charging pump is communicated with the input end of the point source bubble plume generator through the gas conveying hose, and the connecting end of the air charging pump is electrically connected with a signal receiver I for receiving the signal of the intelligent control module and controlling the air charging pump to start / stop.

[0013] The bubble plume barrier interception and collection mechanism comprises a plume air pump, a gas conveying pipe, a bubble plume barrier generator, a collection pool and a water retaining wall, the water retaining wall is arranged at the end of the drainage main channel for intercepting the lower carbon substances in the water flow, the output end of the plume air pump is communicated with the collection pool through the gas conveying pipe and the bubble plume barrier generator for generating the bubble plume barrier and collecting the floating carbon substances intercepted by the bubble plume barrier, and the connecting end of the plume air pump is electrically connected with a signal receiver II for receiving the signal of the intelligent control module and controlling the plume air pump to start / stop.

[0014] The intelligent control module comprises a collection unit and intelligent hardware, the collection unit is used for collecting image data in the action area of the point source bubble plume carbon collection and oxygen increasing mechanism and the bubble plume barrier interception and collection mechanism, the intelligent hardware is used for receiving the image data from the collection unit, the intelligent hardware is built-in with a convolutional neural network for image training and identifying and controlling the air charging pump starting algorithm.

[0015] Preferably, the number of the point source bubble plume generators is set to be multiple, and the multiple point source bubble plume generators are uniformly distributed in the paddy field, and the air charging pump is arranged at the side of the paddy field.

[0016] The gas conveying hose is made of plastic material, so that the point source bubble plume generator can move within the length range of the gas conveying hose.

[0017] Preferably, the point source bubble plume generator comprises a connecting port, a hollow base and a sponge diffusion sleeve, the sponge diffusion sleeve is lapped on the top end of the hollow base through a steel wire rope, and the connecting port penetrates the side wall of the hollow base.

[0018] The lapped part of the hollow base and the sponge diffusion sleeve is located on the surface of the paddy field soil, the connecting port and the hollow base are both buried in the paddy field soil, and the sponge diffusion sleeve is located on the upper end of the paddy field soil.

[0019] Preferably, the connecting port and the hollow base are both provided in a hollow cylindrical shape, the sponge diffusion sleeve is in a hollow semi-spherical shell shape, and the hollow base is made of PVC material.

[0020] Preferably, the gas delivery pipe and the bubble plume barrier generator are both made of PVC material, and the bubble plume barrier generator is provided with a plurality of holes arranged in a linear array on the surface thereof.

[0021] The collection pool is provided as a cylindrical cavity with an open top, the collection pool is provided with a water passage between the downstream side of the drainage trunk and the open top, and the end of the bubble plume barrier generator extends into the water passage, and the water passage and the bubble plume barrier generator are arranged in the same direction.

[0022] Preferably, the bubble plume barrier generator is obliquely arranged at the bottom end of the inner side of the drainage trunk, and the included angle between the bubble plume barrier generator and the tangent of the side of the drainage trunk is α, and α satisfies 30°≤α≤60°.

[0023] Preferably, the collection unit is at least one of a camera and a drone, and the collection unit is arranged at the junction of the drainage trunk and the river in the rice field, and the collection unit cooperates with the intelligent hardware to intelligently identify and calculate the coverage area and distribution of the floating carbon material in the drainage trunk and the river.

[0024] Preferably, the plume air pump is arranged at the front end of the side of the junction of the drainage trunk and the river, and the water retaining wall is arranged near the junction of the drainage trunk and the river.

[0025] A working method of a rice field "water saving-yield increasing-carbon capturing" system based on bubble plume, comprising the following steps:

[0026] S1, obtaining the real-time situation of the drainage trunk and the coverage of the rice field water surface, collecting image data in the action area of the point source bubble plume carbon collecting and oxygen increasing mechanism and the bubble plume barrier intercepting and collecting mechanism by using the collection unit, and uploading the obtained data to the intelligent hardware for storage;

[0027] S2, convolutional neural network training image recognition, judging whether there is floating material in the drainage trunk, and identifying and calculating the coverage area of the floating carbon material;

[0028] S3, cleaning the floating material in the drainage trunk, and according to the judgment result of S2, the following operations are performed:

[0029] S3.1, when there is floating matter in the drainage main channel, start the plume air pump, cooperate with the bubble plume barrier generator to form a bubble plume barrier, drive the surrounding water to rise to the surface of the drainage ditch, form a certain inclined surface flow, intercept the floating carbon material in the drainage ditch, the floating carbon material in the drainage ditch flows into the rear-end collection pool for storage under the combined action of the surface flow formed by the water flow and the bubble plume barrier in the drainage ditch, and after the floating carbon material completely covers the surface of the collection pool, salvage and recycle, the carbon material in the middle and bottom layers of the water body in the drainage ditch is deposited under the blocking of the water retaining wall, and the bottom mud is recycled and treated during subsequent maintenance;

[0030] S3.2, when the floating matter in the drainage main channel is cleaned or there is no floating matter, return to S1-S2 to continue collecting image data and image recognition;

[0031] S4, set the oxygenation condition and oxygenate the paddy field when the condition is met, compare the floating carbon material coverage area obtained in S2 with the oxygenation condition setting value, including the following operations:

[0032] S4.1, when the intelligent control module identifies that the floating carbon material coverage area in the paddy field is greater than or equal to the oxygenation condition setting value, start the air pump, cooperate with the air hose and the point source bubble plume generator to transmit air, the air is cut in the dense gauze inside the point source bubble plume generator, and a point source bubble plume is formed in the paddy field water body, the point source bubble plume carries the surrounding paddy field water to rise to the surface of the paddy field, drives the floating carbon material on the surface of the paddy field to the edge of the point source bubble plume area and enriches, at the same time, the point source bubble plume carries oxygen, increases the oxygen content of the paddy field, and improves the water environment of the paddy field;

[0033] S4.2, after the oxygenation operation in S4.1 is completed or when the floating carbon material coverage area in the paddy field is less than the oxygenation condition setting value, return to S1-S2 to continue collecting image data and image recognition.

[0034] Preferably, in S4, the oxygenation condition setting value is set to 70%.

[0035] The present application has the following beneficial effects:

[0036] 1. The intelligent control module monitors the coverage of floating carbon materials such as algae in the paddy field and drainage ditch, uses a convolutional neural network to train intelligent identification of floating carbon materials, controls the operation of the point source bubble plume carbon collection and oxygenation mechanism and the bubble plume barrier interception and collection mechanism, can increase the oxygen content of the paddy field water, improve the utilization rate of the paddy field water, improve the water environment, realize the water-saving and yield-increasing of rice, automatically drive and enrich the interception of floating carbon materials such as algae, the water retaining wall completes the interception of the bottom mud, realizes the all-round carbon capture of the drainage channel, reduces agricultural non-point source pollution, realizes the intelligent management of the paddy field "water-carbon", and is beneficial to pollution reduction and carbon reduction;

[0037] 2, The management mode of the farmland-ecological-economic system is constructed in the application, and on the premise that no other additional economic benefits are taken into account, the budget investment cost of the system for 1 mu of rice field is about 4000 yuan, and economic returns are expected to be generated in two seasons; meanwhile, the system has good adaptability and can be flexibly applied to various field environments, so that the production cost is reduced and the benefit is significantly improved. BRIEF DESCRIPTION OF DRAWINGS

[0038] Figure 1 A working roadmap of the rice field "water saving-yield increasing-carbon capturing" system is provided in the application.

[0039] Figure 2 A whole structure schematic view of the rice field "water saving-yield increasing-carbon capturing" system is provided in the application.

[0040] Figure 3 A working flow chart of the point source bubble plume carbon collecting and oxygen increasing mechanism in the application.

[0041] Figure 4 A working flow chart of the bubble plume barrier interception and collection mechanism in the application.

[0042] Figure 5 A training and identification process schematic view of the intelligent control module in the application.

[0043] Figure 6 An image training and identification extraction network structure view of the intelligent control module in the application.

[0044] Figure 7 A point source bubble plume generator structure schematic view given by the embodiment of the application.

[0045] Figure 8 A point source bubble plume generator distribution state schematic view given by the embodiment of the application.

[0046] Figure 9 A bubble plume barrier generator structure schematic view given by the embodiment of the application.

[0047] Figure 10 A point source bubble plume generator arrangement state schematic view given by the embodiment of the application.

[0048] Figure 11 A point source bubble plume carbon collecting and oxygen increasing mechanism driving floating carbon material experiment effect view given by the embodiment of the application.

[0049] Figure 12 An oxygen increasing experiment effect view of the point source bubble plume carbon collecting and oxygen increasing mechanism given by the embodiment of the application.

[0050] Figure 13The total nitrogen measurement experimental result graph of the rice field yield increasing experiment of the point source bubble plume carbon collection and oxygen increasing mechanism given in the embodiment of the present application.

[0051] Figure 14 The experimental effect graph of the bubble plume barrier interception and collection mechanism intercepting different floating objects at different angles.

[0052] Among them:

[0053] 01, drainage trunk; 02, water passage;

[0054] 1, point source bubble plume carbon collection and oxygen increasing mechanism; 2, bubble plume barrier interception and collection mechanism; 3, intelligent control module;

[0055] 11, air pump; 12, air conveying hose; 13, point source bubble plume generator;

[0056] 21, plume air pump; 22, air conveying pipe; 23, bubble plume barrier generator; 24, collection pool; 25, water retaining wall;

[0057] 131, connecting port; 132, hollow base; 133, sponge diffusion sleeve. DETAILED DESCRIPTION

[0058] The present application will be further described in detail below in conjunction with the drawings and specific preferred embodiments.

[0059] In the description of the present application, it should be understood that the terms "left side", "right side", "upper part", "lower part" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and "first", "second" and the like do not represent the importance of the parts, so it cannot be understood as a limitation on the present application. The specific dimensions used in the present embodiment are only for the purpose of illustrating the technical scheme and do not limit the protection scope of the present application.

[0060] As Figures 1-4 shown, a bubble plume-based rice field "water saving-yield increasing-carbon trapping" system includes a point source bubble plume carbon collection and oxygen increasing mechanism 1, a bubble plume barrier interception and collection mechanism 2, and an intelligent control module 3, wherein the point source bubble plume carbon collection and oxygen increasing mechanism 1 is used to drive away carbon substances floating on the surface of the rice field and increase the oxygen content of the rice field; the bubble plume barrier interception and collection mechanism 2 is used to intercept and recycle the carbon substances in the drainage ditch; the intelligent control module 3 controls the operation of the point source bubble plume carbon collection and oxygen increasing mechanism 1 and the bubble plume barrier interception and collection mechanism 2 through radio control.

[0061] The floating carbon substances mentioned in the present embodiment include duckweed, algae and the like in the rice field.

[0062] The point source bubble plume carbon collection and oxygen increasing mechanism 1 comprises an air charging pump 11, an air conveying hose 12 and a point source bubble plume generator 13, the output end of the air charging pump 11 is communicated with the input end of the point source bubble plume generator 13 through the air conveying hose 12, and the connecting end of the air charging pump 11 is electrically connected with a signal receiver I for receiving signals of the intelligent control module 3 and controlling the air charging pump 11 to start / stop;

[0063] The bubble plume barrier interception and collection mechanism 2 comprises a plume air pump 21, an air conveying pipe 22, a bubble plume barrier generator 23, a collection pool 24 and a water retaining wall 25, wherein the water retaining wall 25 is arranged at the end of the drainage main channel 01 for intercepting lower carbon substances in the water flow, the output end of the plume air pump 21 is communicated with the collection pool 24 through the air conveying pipe 22 and the bubble plume barrier generator 23 for generating a bubble plume barrier and collecting floating carbon substances intercepted thereby, and the connecting end of the plume air pump 21 is electrically connected with a signal receiver II for receiving signals of the intelligent control module 3 and controlling the plume air pump 21 to start / stop;

[0064] The intelligent control module 3 comprises a collection unit and intelligent hardware, wherein the collection unit is used for collecting image data in the action area of the point source bubble plume carbon collection and oxygen increasing mechanism 1 and the bubble plume barrier interception and collection mechanism 2, the intelligent hardware is used for receiving the image data from the collection unit, the intelligent hardware is built-in with a convolutional neural network for image training and identification and control of the air charging pump 11 starting algorithm, the intelligent hardware is arranged as a processing terminal, and the processing terminal is arranged in a metal box in a control room;

[0065] As shown in Figures 5-6 The training code language of the convolutional neural network in the embodiment adopts Python, and image recognition is performed in combination with an Opencv module; in a Python environment, the Opencv module is imported, the picture information of the duckweed, algae and other floating carbon substances in the paddy field and drainage ditch is taken as a sample training library, the sample training library picture grayscale conversion and size adjustment are completed, and after a suitable size of the gray image is obtained, the convolutional neural network is trained for multiple times, the intelligent control module 3 prediction and identification are completed, the training process has a total of 9 layers of depth, which includes an input layer, 3 layers of convolutional layers, 3 layers of pooling layers and 2 layers of fully connected layers.

[0066] The calculation formula of the convolutional layer is

[0067]

[0068] In the formula, M j is a subset of the feature map input into the convolutional layer; is an activation function value of the output feature map j in the lth layer; is a convolution kernel between the (l-1)th feature map i and the lth feature map j. is the bias value of the jth feature map of the 1th layer; and is a two-dimensional discrete convolution operator.

[0069] The calculation formula of the pooling layer is

[0070]

[0071] where subsampling(·) is a sampling function.

[0072] The calculation formula of the full connection layer is

[0073]

[0074] where l is the current layer number; is the connection weight between the jth neuron of the current layer and the ith neuron of the previous layer; is the bias value of the jth neuron of the current layer; and f(·) is the activation function of the layer.

[0075] As a further improved scheme of the present technical solution, as shown in Figure 2 and Figure 8 The number of the point-source bubble plume generators 13 is set to be multiple, and the multiple point-source bubble plume generators 13 are uniformly distributed in the rice field, and the air charging pump 11 is placed at the side of the rice field.

[0076] The air conveying hose 12 is made of plastic material, so that the point-source bubble plume generator 13 can move within the length range of the air conveying hose 12.

[0077] As a further improved scheme of the present technical solution, as shown in Figure 7 The point-source bubble plume generator 13 comprises a connecting port 131, a hollow base 132, and a sponge diffusion sleeve 133, the sponge diffusion sleeve 133 is lapped on the top end of the hollow base 132 through steel wire binding, and the connecting port 131 penetrates the side wall of the hollow base 132.

[0078] The lapping position of the hollow base 132 and the sponge diffusion sleeve 133 is located on the surface of the soil of the rice field, the connecting port 131 and the hollow base 132 are both buried in the soil of the rice field, and the sponge diffusion sleeve 133 is located on the upper end of the soil of the rice field.

[0079] The connecting port 131 and the hollow base 132 are both set to be hollow cylindrical, the sponge diffusion sleeve 133 is set to be a hollow hemispherical shell, and the hollow base 132 is made of PVC material.

[0080] As a further improved scheme of the present technical solution, as shown in Figures 9-10 The air conveying pipe 22 and the bubble plume barrier generator 23 are both made of PVC material, and a plurality of holes in linear array are arranged on the surface of the bubble plume barrier generator 23.

[0081] The collection pool 24 is arranged as a top-open cylindrical cavity, a water passing corridor 02 is arranged between the downstream side of the drainage main channel 01 and the collection pool 24, and the end of the bubble plume barrier generator 23 extends into the water passing corridor 02, and the water passing corridor 02 is arranged in the same direction as the bubble plume barrier generator 23.

[0082] Further, the bubble plume barrier generator 23 is arranged at the bottom end of the inside of the drainage main channel 01, and the included angle between the bubble plume barrier generator 23 and the tangent of the side of the drainage main channel 01 is α, and α satisfies 30°≤α≤60°.

[0083] Further, the collection unit is arranged as at least one of a camera and a drone, and the collection unit is arranged at the junction of the drainage main channel 01 and the river in the rice field, and the collection unit cooperates with the intelligent hardware to intelligently identify and calculate the coverage area and distribution of the floating carbon material in the drainage main channel 01 and the rice field.

[0084] As a further improvement of the technical solution: the plume air pump 21 is arranged at the front end side of the junction of the drainage main channel 01 and the river, and the water retaining wall 25 is arranged near the junction of the drainage main channel 01 and the river.

[0085] A working method of a rice field "water saving-yield increasing-carbon capturing" system based on bubble plume, comprising the following steps:

[0086] S1, obtaining the live situation of the drainage main channel 01 and the water surface coverage of the rice field, collecting image data in the action area of the point source bubble plume carbon collecting and oxygen increasing mechanism 1 and the bubble plume barrier intercepting and collecting mechanism 2 by using the collection unit, and uploading the obtained data to the intelligent hardware for storage;

[0087] S2, convolutional neural network training image recognition, judging whether there is floating material in the drainage main channel 01, and identifying and calculating the coverage area of the floating carbon material;

[0088] S3, cleaning the floating material in the drainage main channel 01, according to the judgment result of S2, the following operations are performed:

[0089] S3.1, when the intelligent control module 3 identifies that there are floating carbon materials such as duckweed and algae in the drainage ditch, the instruction information is transmitted to the signal receiver II through radio, the signal receiver II controls the plume air pump 21 to start after receiving the instruction, air enters the air conveying pipe 22 through the plume air pump 21, and is transmitted to the bubble plume barrier generator 23, air enters the water body of the drainage ditch through the multiple holes on the surface of the bubble plume barrier generator 23, forming a bubble plume barrier, the bubble plume barrier expands in the drainage ditch in the shape of a triangular prism, driving the surrounding water body to rise to the surface of the drainage ditch, forming a certain inclined surface flow, and intercepting floating carbon materials such as duckweed and algae in the drainage ditch; the floating carbon materials such as duckweed and algae in the drainage ditch flow into the rear-end collection tank 24 under the combined action of the water flow in the drainage ditch and the surface flow formed by the bubble plume barrier, and are stored for storage, and after the floating carbon materials completely cover the surface of the collection tank 24, they are salvaged and recycled; the carbon materials in the middle and bottom layers of the water body in the drainage ditch are precipitated under the blockage of the water retaining wall 25, facilitating the recycling and treatment of the bottom mud and reducing the diffusion of agricultural non-point source pollution; through the above process, the carbon capture in the paddy field and the drainage ditch is completed;

[0090] S3.2, when the floating material cleaning in the drainage main channel 01 is completed or there is no floating material, return to S1-S2 to continue collecting image data and image recognition;

[0091] S4, set the oxygenation condition and oxygenate the paddy field when the condition is met, usually set the oxygenation condition value to 70%, compare the floating carbon material coverage area obtained in S2 with the oxygenation condition setting value, including the following operations:

[0092] S4.1, when the intelligent control module 3 identifies that the floating carbon material coverage area in the paddy field exceeds 70%, the instruction information is transmitted to the signal receiver I through radio, the signal receiver I controls the air pump 11 to start after receiving the instruction, air enters the air conveying hose 12 through the air pump 11, and is transmitted to the point source bubble plume generator 13, air is cut in the dense gauze inside the point source bubble plume generator 13, forming a point source bubble plume in the paddy field water body, the point source bubble plume carries the surrounding paddy field water body to the surface of the paddy field, drives the floating carbon materials such as duckweed and algae on the surface of the paddy field to the edge of the point source bubble plume area, and enriches them, facilitating subsequent collection, salvage and recycling; at the same time, the point source bubble plume carries oxygen, effectively increasing the oxygen content in the paddy field, improving the paddy field water environment, reducing the use of pesticides, preventing eutrophication, improving the utilization rate of paddy field water, and helping to strengthen the photosynthesis of rice, thereby reducing agricultural non-point source pollution and achieving the effect of water saving and yield increase;

[0093] S4.2, after the oxygenation operation in S4.1 is completed or the floating carbon material coverage area in the paddy field is identified to be less than 70%, return to S1-S2 to continue collecting image data and image recognition.

[0094] In specific embodiments, the system is installed according to the size of the rice field area;

[0095] The length of the rice field area is set as L, the width is set as M, the width and depth of the drainage main channel 01 are set as B and H respectively 干渠 The gas delivery hose 12 is connected to the connecting port 131, and the gas delivery hose 12, the connecting port 131 and the hollow base 132 are buried in the rice field soil. The hollow base 132 and the sponge diffusion sleeve 133 are lashed and overlapped by a steel wire rope, and the overlapping part is located on the surface of the rice field soil. The sponge diffusion sleeve 133 is located at the upper end of the rice field soil. The hollow base 132 is made of PVC material with a density of 1.38-1.4 g / cm 3 The diameter D satisfies the following relationship:

[0096]

[0097] In the formula, the units of D, L and M are m. If the diameter of the base exceeds 0.01 m, the impact force of the point source bubble plume will decrease. If D is calculated to be less than 0.005 m, D is taken as 0.005 m for ease of mass production. The sponge diffusion sleeve 133 is a hollow hemispherical shell with a thickness of 0.002±0.001 m, which can increase the diffusion area of the point source bubble plume. The diameter of the sponge diffusion sleeve 133 is equal to D. The connecting port 131 is a hollow cylinder with a diameter of 0.5D and a height of 0.5D. The connecting port 131 is directly embedded in one side of the outer wall of the gas delivery hose 12. The gas delivery hose 12 made of plastic has an inner diameter d (0.005 m≤d≤0.02 m), and d must be greater than the diameter of the connecting port 131. The rated power of the inflation pump 11 is not less than 1100 W.

[0098] The point source bubble plume generator 13 is arranged as shown in Figure 10 The distance from the center of the circle to the side wall is 0.1L and 0.1M respectively. The subsequent adjacent centers are spaced 0.2L along the L direction and 0.2M along the M direction, forming a grid array of 0.2L*0.2M, thereby reducing the arrangement cost and improving the efficiency of the point source bubble plume.

[0099] The length of the bubble plume barrier generator 23 made of PVC material ranges from [1.4B, 1.5B], and the inside is hollow with an inner diameter of 0.00005B. The width direction angle a of the bubble plume barrier generator 23 satisfies 30°≤a≤60°. If it is less than 30° or greater than 60°, the interception efficiency will be insufficient. The surface hole diameter D1 of the bubble plume barrier generator 23 satisfies the following relationship:

[0100]

[0101] In the formula, B and D1 are in meters. If D1 is less than 0.002, it will affect the interception performance of the bubble plume barrier.

[0102] The distance between the centers of two adjacent holes of the bubble plume barrier generator 23 is in the range of [20D1, 30D1], which can more efficiently generate the bubble plume barrier. If the distance is too short, the interaction between the bubbles will weaken the performance of the bubble plume barrier. If the distance is too wide, the bubble plume barrier will be interrupted between the two adjacent holes. The installation depth of the bubble plume barrier generator 23 is 1 / 3 of the depth of the drainage trunk 01. The bubble plume barrier generator 23 is connected with the plume air pump 21 through the air conveying pipe 22, which is made of PVC material and has an inner diameter of 0.00005B. The rated power of the plume air pump 21 is not less than 1100W. The diameter of the collection pool 24 is 0.5B, and the depth is the same as that of the drainage trunk 01. The short side length of the water passage 02 is 0.5B, and the depth is equal to that of the collection pool 24.

[0103] The deflection angle of the bubble plume barrier generated by the bubble plume generator 23 within the effective flow rate is between 13° and 45°, and the deflection displacement is linearly distributed in the water body. In the actual arrangement process, the distance ΔL between the end of the bubble plume generator 23 and the downstream end boundary of the inlet of the collection pool 24 satisfies the following relationship:

[0104]

[0105] The collection pool 24 needs to be arranged at the tail of the drainage trunk 01, where the water flow tends to be stable, and the generated bubble plume barrier is more stable. The width at the inlet of the collection pool needs to be greater than 2ΔL.

[0106] The distance between the water retaining wall 25 and the end of the drainage trunk 01 satisfies [B, 2B], which ensures that the sediment can be effectively precipitated and the influence on the water flow behind the water retaining wall 25 is reduced. The height H of the water retaining wall 25 is lower than 2 / 3 of the depth of the drainage trunk 01 and higher than 1 / 2 of the depth of the drainage trunk 01, that is, The width of the water retaining wall 25 is B, and the thickness is 0.05B.

[0107] In this embodiment, the experimental material is taken from natural duckweed in the field. After the duckweed is washed with water, it is placed in a square experimental pool with an area of 1m 2 In the square experimental pool, the natural condition of duckweed on the water surface is simulated, and the coverage rate of duckweed on the water surface at this time is recorded. The water depth is fixed at 15cm. The point source bubble plume carbon collection and oxygen increasing mechanism 1 is started, and a camera is started to record at the same time. It is observed that the bubbles have a dispersing effect on the covered duckweed. After the device is stable, the recording is stopped, and the pictures at fixed time intervals in the recording are imported into PS software. The duckweed coverage area in the measurement area is measured, and the coverage area ratio is calculated. The experimental results are as follows: Figure 11As shown in the figure, under experimental conditions, the proportion of duckweed coverage area decreased by approximately 25% within 0-20 seconds within the controlled area. The experimental results indicate that, under certain water depth conditions, the point-source bubble carbon collection and oxygenation mechanism effectively drives away and enriches duckweed accumulated on the water surface during operation. After the system is started, the duckweed coverage area is significantly reduced, thereby mitigating the impact of duckweed coverage on rice growth.

[0108] In this embodiment, 1m is used 2 A square experimental pool with a fixed water depth of 15cm was connected to a point-source bubble plume carbon collection and oxygenation mechanism 1. A single point-source bubble plume generator 13 was placed at the center of the bottom of the experimental pool. The initial dissolved oxygen (DO) value was measured using a dissolved oxygen meter. After the point-source bubble plume carbon collection and oxygenation mechanism 1 was started, the DO value of the water in the experimental pool was measured at regular intervals. Multiple experiments were conducted, and the data were statistically analyzed. The oxygenation effect is as follows: Figure 12 As shown. By Figure 12 It can be seen that the dissolved oxygen content in the water increases and tends to stabilize at 200s. The dissolved oxygen content in the water can reach 12mg / L, thus achieving the oxygenation effect.

[0109] In this embodiment, two 1m 2 A square experimental pond was used, with a fixed water depth of 15 cm. Sixteen seedlings of Lianjing 11 rice were transplanted into each pond. 200g of a mixture of natural duckweed and algae was placed on the water surface. The experimental group was connected to a point-source bubble plume carbon collection and oxygenation mechanism 1, with the point-source bubble plume generator 13 arranged as claimed. The control group did not have the point-source bubble plume carbon collection and oxygenation mechanism 1 installed. Since nitrogen is a crucial factor for rice yield, the seedling experiment was conducted under the same conditions. Total nitrogen in the water was measured daily at fixed times using a multi-functional water quality analyzer over 15 days. The comparative experimental results are as follows: Figure 13 As shown. By Figure 13 It can be seen that under the experimental conditions, the total nitrogen content consumed in the experimental pool using the point source bubble plume carbon collection and oxygenation mechanism 1 is greater and the consumption rate is greater. This can indirectly indicate that the absorption and utilization rate of nitrogen by rice in the experimental pool using the point source bubble plume carbon collection and oxygenation mechanism 1 is improved, resulting in higher yield.

[0110] In this embodiment, natural duckweed and algae were used to conduct a bubble plume barrier interception and collection experiment. The experimental materials consisted of a mixture of natural duckweed and algae, and 200g each of tree leaves. A water passage 02, 50m long, 1.5m wide, and 0.5m high, was used as the experimental site, and the fixed flow rate was 44.98m³. 3The water flow velocity was 0.0480 m / s, the water depth was 0.244 m, and the bubble plume barrier interception and collection mechanism 2 was activated. The bubble plume barrier length was 1.3 m, the air flow rate was 15 L / min, and the bubble plume barrier angles were set to 10°, 30°, and 45°. The experimental results of the bubble plume barrier angles affecting the interception and collection of different floating objects are as follows: Figure 14 As shown. By Figure 14 It can be seen that under the experimental conditions, the bubble plume barriers with the three different arrangement angles all achieved an interception and collection rate of over 95% for duckweed and algae, and an interception and collection rate of over 85% for leaves. The bubble plume barrier with the 45° arrangement had the best interception effect, exceeding 98%.

[0111] In this embodiment, the components used in this system—gas delivery hose 12, point source bubble plume generator 13, gas delivery pipe 22, and bubble plume barrier generator 23—are inexpensive. The gas delivery hose 12 costs 8.2 yuan / m, the point source bubble plume generator 13 costs 2 yuan, the gas delivery pipe costs 8.3 yuan / m, and the bubble plume barrier generator costs 20 yuan / m. The air pump 11 and the plume pump 21 are the same model and interchangeable, both costing 267 yuan. The entire intelligent control module 3 is estimated to cost 1000 yuan. This is based on planting double-cropping rice in one mu of paddy field. Taking a paddy field system with a drainage canal 01 that is m wide and 1.2m deep as an example, a 360° panoramic camera is used, priced at 164 yuan. The minimum number of point source bubble plume generators 13 is 300. It is planned to purchase 50m air supply hoses 12, 10m air supply pipes 22, and 5.5m bubble plume barrier generators. One air pump 11 and one plume air pump 21 are purchased. The cost of the collection pool 24 is about 500 yuan, and the cost of the retaining wall 25 is about 700 yuan. Therefore, the total cost of this system is about 4000 yuan. Moreover, this system requires low maintenance frequency, only once every 5 years. Currently, the yield of one mu (approximately 0.16 acres) of paddy field in my country is about 800-1200 jin (approximately 400-600 catties). Taking an average of 1000 jin (approximately 500 catties), and assuming a rice price of 2.5 yuan / jin, the profit per mu of paddy field is 1500 yuan per season. Under these circumstances, the investment can be recovered in three seasons. Furthermore, this calculation does not consider the savings in labor costs for harvesting, pesticide costs, irrigation water costs, the yield increase effect of this system, or the profits from selling the captured carbon in the system. Therefore, profitability will be achieved even earlier. In summary, this system has extremely high economic benefits.

[0112] The preferred embodiments of the present invention have been described in detail above. However, the present invention is not limited to the specific details in the above embodiments. Within the scope of the technical concept of the present invention, various equivalent transformations can be made to the technical solutions of the present invention, and these equivalent transformations all fall within the protection scope of the present invention.

Claims

1. A bubble plume based "water saving-yield enhancing-carbon capturing" system for rice field, characterized in that: The application relates to a point-source bubble jet carbon collection and oxygen increasing mechanism (1) for driving carbon substances floating on the surface of a rice field and increasing the oxygen content of the rice field, a bubble jet barrier interception and collection mechanism (2) for intercepting and recycling carbon substances in a drainage ditch, and an intelligent control module (3) for controlling the point-source bubble jet carbon collection and oxygen increasing mechanism (1) and the bubble jet barrier interception and collection mechanism (2) to run through radio control. The point-source bubble jet carbon collection and oxygen increasing mechanism (1) comprises an air charging pump (11), a gas conveying hose (12) and a point-source bubble jet generator (13), the output end of the air charging pump (11) is communicated with the input end of the point-source bubble jet generator (13) through the gas conveying hose (12), and the connecting end of the air charging pump (11) is electrically connected with a signal receiver I for receiving signals of the intelligent control module (3) and controlling the air charging pump (11) to start or stop. The bubble jet barrier interception and collection mechanism (2) comprises a jet air pump (21), a gas conveying pipe (22), a bubble jet barrier generator (23), a collection pool (24) and a water retaining wall (25), the water retaining wall (25) is arranged at the end of a drainage main ditch (01) and used for depositing and intercepting bottom carbon substances, the output end of the jet air pump (21) is communicated with the collection pool (24) through the gas conveying pipe (22) and the bubble jet barrier generator (23) and used for generating a bubble jet barrier to intercept and collect floating carbon substances, and the connecting end of the jet air pump (21) is electrically connected with a signal receiver II for receiving signals of the intelligent control module (3) and controlling the jet air pump (21) to start or stop. The intelligent control module (3) comprises a collection unit and intelligent hardware, the collection unit is used for collecting image data in the action area of the point-source bubble jet carbon collection and oxygen increasing mechanism (1) and the bubble jet barrier interception and collection mechanism (2), the intelligent hardware is used for receiving the image data from the collection unit, the intelligent hardware is internally provided with a convolutional neural network for image training and identification and control of the air charging pump (11) starting algorithm. The point-source bubble jet generator (13) comprises a connecting port (131), a hollow base (132) and a sponge diffusion sleeve (133), the sponge diffusion sleeve (133) is lapped on the top end of the hollow base (132) through steel wire rope binding, and the connecting port (131) penetrates the side wall of the hollow base (132). The lapping position of the hollow base (132) and the sponge diffusion sleeve (133) is located on the surface of the soil of the rice field, the connecting port (131) and the hollow base (132) are both buried in the soil of the rice field, and the sponge diffusion sleeve (133) is located on the upper end of the soil of the rice field. In the formula, L is the length of the rice field area, and M is the width of the rice field area. If the diameter of the base exceeds 0.01 m, the impact force of the formed point-source bubble jet will decrease. The number of the point-source bubble jet generators (13) is multiple, and the multiple point-source bubble jet generators (13) are uniformly distributed in the rice field, and the air charging pump (11) is arranged on the side of the rice field. The hollow base (132) is made of a PVC material having a density of 1.38-1.4 g / cm 3 The diameter D of the hollow base (132) satisfies the following relationship: The gas conveying hose (12) is made of plastic material, so that the point-source bubble jet generator (13) can move within the length range of the gas conveying hose (12). ​ 2. A bubble plume based "water saving-yield enhancement-CO2 capture" system for rice field as claimed in claim 1, wherein: ​ ​ 3. A bubble plume based "water saving-yield enhancement-CO2 capture" system for rice field as claimed in claim 1, wherein: The connecting port (131) and the hollow base (132) are both hollow cylindrical, the sponge diffusion sleeve (133) is a hollow hemispherical shell, and the hollow base (132) is made of PVC material.

4. A bubble plume based "water saving-yield enhancement-CO2 capture" system for rice field as claimed in claim 1, wherein: The gas delivery pipe (22) and the bubble plume barrier generator (23) are both made of PVC material, and the bubble plume barrier generator (23) is provided with a plurality of linearly arrayed holes on the surface. The collecting pool (24) is provided as a cylindrical cavity with an open top, the collecting pool (24) is provided with a water passing corridor (02) between the downstream side of the drainage trunk (01), and the end of the bubble plume barrier generator (23) extends into the water passing corridor (02), and the water passing corridor (02) is arranged in the same direction as the bubble plume barrier generator (23).

5. A bubble plume based "water saving-yield enhancement-CO2 capture" system for rice field as claimed in claim 1, wherein: The bubble plume barrier generator (23) is obliquely arranged at the bottom end of the inside of the drainage trunk (01), and the included angle between the bubble plume barrier generator (23) and the tangent of the side of the drainage trunk (01) is α, and α satisfies 30°≤α≤60°.

6. A bubble plume based "water saving-yield enhancement-CO2 capture" system for rice field as claimed in claim 1, wherein: The collecting unit is at least one of a camera and a drone, and is arranged at the intersection of the drainage trunk (01) and the river in the rice field, and cooperates with the intelligent hardware to intelligently identify and calculate the coverage area and distribution of the floating carbon material in the drainage trunk (01) and the rice field.

7. A bubble plume based "water saving-yield enhancement-CO2 capture" system for rice field as claimed in claim 1, wherein: The plume air pump (21) is arranged at the front end side of the intersection of the drainage trunk (01) and the river, and the water retaining wall (25) is arranged close to the intersection of the drainage trunk (01) and the river.

8. A method of operating a bubble plume based "water saving-yield enhancement-CO2 capture" system for rice fields as claimed in any one of claims 1 to 7, characterized in that: The method comprises the following steps: S1, obtaining the live situation of the drainage trunk (01) and the water surface coverage of the rice field, collecting image data in the action area of the point source bubble plume carbon collecting and oxygen increasing mechanism (1) and the bubble plume barrier intercepting and collecting mechanism (2) by using the collecting unit, and uploading the obtained data to the intelligent hardware for storage; S2, convolutional neural network training image recognition, judging whether there is floating material in the drainage trunk (01), and identifying and calculating the coverage area of the floating carbon material; S3, cleaning the floating material in the drainage trunk (01), and performing the following operations according to the judgment result of S2: S3.1, when there is floating material in the drainage trunk (01), starting the plume air pump (21), cooperating with the bubble plume barrier generator (23) to form a bubble plume barrier, driving the surrounding water to rise to the surface of the drainage ditch, forming a certain inclined surface flow, intercepting the floating carbon material in the drainage ditch, and the floating carbon material in the drainage ditch flows into the rear collecting pool (24) for storage under the combined action of the surface flow formed by the water flow in the drainage ditch and the bubble plume barrier, and after the floating carbon material completely covers the surface of the collecting pool (24), the floating carbon material is salvaged and recycled, and the carbon material in the middle and bottom layers of the water body in the drainage ditch is deposited under the blockage of the water retaining wall (25), and the bottom mud is recycled and treated during subsequent maintenance; S3.2, when the floating material in the drainage trunk (01) is cleaned or there is no floating material, returning to S1-S2 to continue collecting image data and image recognition; S4, set oxygenation condition and oxygenate the paddy field when the condition is met, according to the floating carbon material coverage area identified in S2, compare it with the oxygenation condition setting value, including the following operations: S4.1, when the intelligent control module (3) identifies that the floating carbon material coverage area in the paddy field is greater than or equal to the oxygenation condition setting value, start the air pump (11), cooperate with the air hose (12) and the point source bubble plume generator (13) to transmit air, the air is cut in the dense gauze inside the point source bubble plume generator (13), and the point source bubble plume is formed in the paddy field water body, the point source bubble plume carries the surrounding paddy field water body to the paddy field surface, drives the floating carbon material on the paddy field surface to the edge of the point source bubble plume area, and enriches it, at the same time, the point source bubble plume carries oxygen, increases the oxygen content of the paddy field, and improves the paddy field water body environment; S4.2, after the oxygenation operation in S4.1 is completed or when the floating carbon material coverage area in the paddy field is less than the oxygenation condition setting value, return to S1-S2 to continue collecting image data and image recognition.

9. A method of operating a bubble plume based "water saving-yield enhancement-CO2 capture" system for rice field as claimed in claim 8, wherein: In S4, the oxygenation condition setting value is set to 70%.

Images