High-efficiency cultivation method for preventing continuous cropping of traditional Chinese medicinal materials

Abstract

The present application relates to the technical field of Chinese herbal medicine cultivation, in particular to a high-efficiency cultivation method for preventing continuous cropping of Chinese herbal medicine, which comprises collecting waterway and water accumulation information of a plot, determining pathogen migration chain segments, locating chain breaking points and setting isolation boundaries, after waterway isolation is completed, controlling the valve sequence of clean water, bacterial liquid and fertilizer liquid according to the state of live bacteria and electric conductivity of the bacterial agent. The present application improves the prevention and control precision of Chinese herbal medicine continuous cropping plot by linking pathogen migration recognition with water, determining the isolation boundary of the ditch and buffering the environment before the bacterial fertilizer enters the roots. The present application determines the carrying chain segment and chain breaking point according to the slope direction, height difference, turbidity, root residual debris and wet edge advancing state, so that the isolation boundary is fitted to the actual migration termination position of the pathogen, reducing the cross-infection caused by water accumulation backflow. After waterway isolation is confirmed, the valve sequence of clean water, bacterial liquid and fertilizer liquid is controlled according to the residual amount of live bacteria and the state of electric conductivity, reducing salt inhibition, improving the survival rate of bacterial agent in roots and the stability of continuous cultivation.

Description

Technical Field

[0001] This invention relates to the field of Chinese medicinal herb cultivation technology, and in particular to a method for efficient cultivation of Chinese medicinal herbs to prevent continuous cropping. Background Technology

[0002] In the continuous cropping of Chinese medicinal herbs, crops such as Panax notoginseng, Atractylodes macrocephala, Pinellia ternata, and Fritillaria cirrhosa, which are susceptible to continuous cropping, are prone to problems such as root pathogen accumulation, deterioration of soil physical and chemical conditions, and reduced survival rate of microbial fertilizers. Existing methods to prevent continuous cropping usually involve crop rotation, soil disinfection, increased application of organic fertilizers, application of microbial agents, and improvement of drainage conditions. The focus is mostly on soil improvement or microbial fertilizer application within a single plot.

[0003] However, in low-lying, continuously cropped areas, pathogen transmission between adjacent plots is not entirely limited by administrative boundaries, contracted boundaries, or crop variety boundaries. Surface runoff after rain, backwater from ditches, and overflowing water from low-lying areas can carry sclerotia, spores, and diseased root debris into downstream plots. Even after internal soil improvement, downstream plots may still be reinfected due to waterborne transmission. Existing methods for determining plot isolation boundaries typically rely on the planar adjacency of plots, lacking a determination of the termination point of pathogen migration with water, leading to inconsistencies between isolation boundaries and actual transmission paths.

[0004] Meanwhile, existing methods for applying microbial fertilizers often follow a fixed sequence of flushing the pipes with water, applying the fertilizer solution, and then adding the microbial agent. This fails to link the current viable state of the microbial agent with the residual conductivity of the main pipe, the residual conductivity of the branch pipes, the conductivity of the rhizosphere soil, and the rhizosphere moisture content. For fields continuously cropped with medicinal herbs, residual fertilizer solution in the drip irrigation pipes, accumulated salt in the rhizosphere, and insufficient local moisture content can all cause a decrease in the number of viable bacteria before or immediately after the microbial agent reaches the rhizosphere, resulting in the problem of "microbial agent being applied but not surviving in the roots."

[0005] Therefore, there is an urgent need to provide a high-efficiency cultivation method for preventing continuous cropping of Chinese medicinal herbs. This method should first determine the reliable access boundary of the plot based on the water flow carrying capacity, and then control the order of adding clean water, bacterial solution, and fertilizer solution based on the remaining survival code of the microbial agent and the rhizosphere fertilization and water environment. This would simultaneously solve the problems of cross-contamination of waterways after rain and insufficient survival of microbial fertilizer in the roots. Summary of the Invention

[0006] To address the technical problems existing in the prior art, this invention provides a method for efficient cultivation of Chinese medicinal herbs to prevent continuous cropping. The technical solution is as follows: A method for efficient cultivation of Chinese medicinal herbs to prevent continuous cropping includes the following steps: S1: Collect the following information for continuously cropped medicinal herb plots: plot slope, ditch inlet elevation, ditch outlet elevation, ditch confluence elevation, backwater inlet opening / closing status, duration of post-rainwater accumulation, ditch water turbidity, amount of floating root debris, and downstream soil wetting edge advancement distance. S2: Determine the elevation difference at the bottom of the ditch based on the elevation of the ditch inlet, the elevation of the ditch outlet, and the elevation of the ditch intersection, and determine the consistency of the elevation difference at the bottom of the ditch with the slope of the plot to obtain downstream candidate segments of pathogen migration with water; S3: Simultaneously trigger and determine the turbidity of the ditch water, the amount of floating root debris, and the advancing distance of the downstream soil wetting edge in the downstream candidate chain segments to obtain the carrying chain segments; S4: Read the ditch water clarity, the amount of remaining root debris and the progress status of the wetted edge along the water flow direction of the carrying chain segment, determine the water flow chain break point, and set the isolation boundary at the upstream node of the water flow chain break point; S5: Perform the following actions at the isolation boundary: set up a sedimentation tank, set up a root barrier filter, raise the embankment foot, and close the return water inlet. After all four actions have returned to the completion mark, generate a waterway isolation confirmed access mark. S6: After generating the confirmed access mark for waterway isolation, read the current viable count level of the inoculant, the minimum viable count level of the target rhizosphere, the remaining viable count level, the salt tolerance conductivity level, the residual conductivity value of the main pipe, the residual conductivity value of the branch pipe, the conductivity value of the rhizosphere soil, and the rhizosphere water content. S7: Based on the remaining live bacteria level, salt tolerance conductivity level, residual conductivity of the main pipe, residual conductivity of the branch pipe, and conductivity of the rhizosphere soil, control the opening and closing sequence of the clear water valve, bacterial solution valve, and fertilizer solution valve so that the clear water first forms a buffer zone for the main pipe, branch pipe, and rhizosphere, then the bacterial solution valve is opened, and the fertilizer solution valve is opened after the rhizosphere conductivity meets the salt tolerance conditions of the bacterial agent.

[0007] As a further aspect of the present invention, the downstream candidate chain segment of the pathogen migrating with water specifically includes: The elevation difference between the inlet and outlet elevations of the ditch is used to determine the direction of water flow in the ditch. The consistency between the slope of the land parcel and the direction of water flow in the ditch is determined. When the slope of the plot is consistent with the direction of water flow in the ditch, the corresponding ditch segment will be registered as a candidate chain segment for sequential drainage; When the slope of the plot is opposite to the direction of the water flow in the ditch, and the return water inlet is in the open state, the corresponding ditch segment is registered as a candidate return water chain segment. When the slope of the plot is opposite to the direction of the water flow in the ditch, and the inlet is closed, the corresponding ditch section will be removed from the pathogen migration determination range. The upstream candidate chain segment and the downstream candidate chain segment are merged to obtain the downstream candidate chain segment.

[0008] As a further aspect of the present invention, obtaining the carrying chain segment specifically involves: Read the turbidity of clear water control ditch sections, the number of floating objects in empty ditch sections, and the displacement of wetted edges in unconnected ditch sections during the same rainfall process; The difference between the turbidity of the ditch water and the turbidity of the clear water control ditch section is used to determine the turbidity triggering result. The difference between the floating amount of root debris and the number of floating objects in the empty trench section is used to determine the root debris triggering result. The difference between the downstream soil wetting edge advance distance and the wetting edge displacement of the unconnected ditch section is used to determine the wetting advance triggering result. When the turbidity trigger result, root residue trigger result and moist propulsion trigger result all enter the corresponding trigger position, the corresponding ditch segment is registered as the carrying chain segment; If any of the results of the turbidity triggering, root residue triggering, and moist propulsion triggering does not enter the corresponding triggering position, the corresponding ditch segment will be registered as a chain segment to be retested.

[0009] As a further aspect of the present invention, determining the water flow chain break point specifically involves: The clarity of the ditch water, the amount of remaining root debris, and the progress status of the wetted edge are read sequentially at each node along the downstream direction of the carrying chain segment. The current node's ditch water clarity is compared with the clarity of the clear water control ditch section for restoration judgment; The remaining amount of root debris at the current node and the number of floating objects in the empty trench section are used to determine the blockage. The current node's wet edge advancement status is compared with the wet edge position of the previous acquisition cycle to determine a stop. When the recovery determination, blocking determination, and stop determination are all true, the current node is registered as a water flow chain break point; If any of the recovery determination, blocking determination, and stop determination is not met, continue reading the next downstream node; If the downstream medicinal herb plot entrance is still not registered as a water flow break point, then the downstream medicinal herb plot entrance will be registered as a prohibited trusted access point.

[0010] As a further aspect of the present invention, the generation of waterway isolation with confirmed access markers specifically includes: The following data are collected at the upstream node of the water flow break point: the constructable width, the bottom elevation of the ditch, the elevation of the root zone of the downstream medicinal herbs, the distance to the return water inlet, the liquid level of the sedimentation tank, the root barrier filter belt retention feedback, the ridge foot elevation feedback, and the return water inlet closure feedback. The feasible width and the layout width of the sedimentation tank are determined to be compatible. Determine the elevation difference between the bottom elevation of the ditch and the elevation of the root zone of the downstream medicinal herb. The distance between the return water inlet and the safe distance for the return water seal are determined; When the achievement determination, elevation difference determination, and distance determination are all satisfied, the isolation boundary is fixed at the upstream node; If any of the achievement determination, elevation difference determination, and distance determination is not met, continue to backtrack one node upstream and re-determine; When the sedimentation tank level has not entered the overflow trigger position, the root barrier filter belt retention feedback return is completed, the ridge foot elevation feedback return is completed, and the return water inlet closure feedback return is completed, the water path isolation confirmed access mark is generated.

[0011] As a further aspect of the present invention, the opening and closing sequence of the control water valve, bacterial solution valve, and fertilizer solution valve is specifically as follows: The difference between the current viable count level of the microbial agent and the target lowest viable count level in the rhizosphere is determined to obtain the viable count level. The residual conductivity values ​​of the main pipe, the residual conductivity values ​​of the branch pipe, and the conductivity values ​​of the rhizosphere soil were compared with the salt tolerance conductivity levels to determine if they exceeded the limits. When the live bacteria balance setting enters the protection trigger setting, and any one of the residual conductivity values ​​of the main pipe, the branch pipe, or the rhizosphere soil exceeds the conductivity limit, close the fertilizer solution valve and the bacterial solution valve, and open the clean water valve. When the residual conductivity of the main pipe, the residual conductivity of the branch pipe, and the conductivity of the rhizosphere soil have not exceeded the conductivity limit, and the water content of the rhizosphere has reached the level of bacterial solution entering the roots, open the bacterial solution valve. When the bacterial solution valve is opened, and the rhizosphere soil electrical conductivity value has not entered the conductivity over-limit range during the continuous collection period, the fertilizer solution valve is opened. When the fertilizer solution valve is opened and the electrical conductivity of the rhizosphere soil enters the conductivity over-limit range, close the fertilizer solution valve and open the clean water valve.

[0012] As a further aspect of the present invention, a microbial fertilizer scheduling interlocking step is included before the microbial liquid is added: Read the current access marker, water flow break point status, isolation boundary node status, return water inlet opening / closing status, and sedimentation tank level of the plot; When the current access marker of the plot is the waterway isolation confirmed access marker, the status of the water flow break point has not been rewritten by the post-rain retest, the opening and closing status of the return water inlet is closed, and the liquid level of the sedimentation tank has not entered the overflow triggering state, the microbial fertilizer scheduling process is opened. When the status of the water flow chain break point is rewritten by the post-rain retest, the opening / closing status of the return water inlet changes to open, or the liquid level of the sedimentation tank enters the overflow trigger position, the microbial fertilizer scheduling process is paused, and the carrying chain segment determination and water flow chain break point determination are re-executed.

[0013] The beneficial effects of the technical solutions provided in the embodiments of the present invention include at least the following: This invention improves the targeting and stability of pathogen control in continuously cropped medicinal herb fields by linking pathogen migration path identification with water flow, ditch isolation boundary determination, and environmental buffering before microbial fertilizer enters the roots. Instead of solely relying on adjacent plots to set isolation boundaries, this method determines the carrier chain segments and water flow breakpoints based on plot slope aspect, ditch bottom elevation difference, ditch water turbidity, amount of floating root debris, and the state of advancement at the moist edge. This ensures that the isolation boundary corresponds to the actual termination point of pathogen migration after rain, reducing downstream cross-infection caused by low-lying water accumulation and ditch backflow. Meanwhile, this invention only opens the microbial fertilizer scheduling after confirming waterway isolation, and controls the opening and closing sequence of the clear water valve, microbial liquid valve and fertilizer liquid valve according to the remaining live bacteria in the microbial agent, the salt tolerance conductivity level, the residual conductivity of the main pipe, the residual conductivity of the branch pipe and the conductivity of the rhizosphere soil. This allows the clear water buffer, microbial liquid entry into the roots and fertilizer liquid to merge in a delayed manner to form an interlock, reducing the inhibition of live bacteria by residual fertilizer liquid and rhizosphere salt, improving the survival rate of microbial agent entry into the roots, thereby improving the management precision, land use efficiency and continuous cultivation stability of Chinese medicinal materials in anti-continuous cropping cultivation. Attached Figure Description

[0014] Figure 1 This is a flowchart of the method of the present invention. Detailed Implementation

[0015] To make the technical problems, technical solutions and advantages of the present invention clearer, a detailed description will be given below in conjunction with the accompanying drawings and specific embodiments.

[0016] Please see Figure 1 This invention provides a technical solution: a method for efficient cultivation of Chinese medicinal herbs to prevent continuous cropping, comprising the following steps: S1: Collect the following information for continuously cropped medicinal herb plots: plot slope, ditch inlet elevation, ditch outlet elevation, ditch confluence elevation, backwater inlet opening / closing status, duration of post-rainwater accumulation, ditch water turbidity, amount of floating root debris, and downstream soil wetting edge advancement distance. S2: Determine the elevation difference at the bottom of the ditch based on the elevation of the ditch inlet, the elevation of the ditch outlet, and the elevation of the ditch intersection, and determine the consistency of the elevation difference at the bottom of the ditch with the slope of the plot to obtain downstream candidate segments of pathogen migration with water. S3: Simultaneously trigger and determine the turbidity of the ditch water, the amount of floating root debris, and the advancing distance of the downstream soil wetting edge in the downstream candidate chain segments to obtain the carrying chain segments; S4: Read the ditch water clarity, the amount of remaining root debris, and the progress status of the wetted edge along the water flow direction carrying the chain segment to determine the water flow chain break point and set the isolation boundary at the upstream node of the water flow chain break point; S5: At the isolation boundary, perform the setting of the sedimentation tank, the setting of the root barrier filter, the raising of the embankment foot and the sealing of the return water outlet, and after all four actions have returned to the completion mark, generate the waterway isolation confirmed connection mark. S6: After generating the waterway isolation confirmed access mark, read the current viable count level of the inoculant, the minimum viable count level of the target rhizosphere, the remaining viable count level, the salt tolerance conductivity level, the residual conductivity value of the main pipe, the residual conductivity value of the branch pipe, the conductivity value of the rhizosphere soil, and the rhizosphere water content. S7: Based on the remaining live bacteria level, salt tolerance conductivity level, residual conductivity of the main pipe, residual conductivity of the branch pipe, and conductivity of the rhizosphere soil, control the opening and closing sequence of the clear water valve, bacterial solution valve, and fertilizer solution valve so that the clear water first forms a buffer zone for the main pipe, branch pipe, and rhizosphere, then the bacterial solution valve is opened, and the fertilizer solution valve is opened after the rhizosphere conductivity meets the salt tolerance conditions of the bacterial agent.

[0017] Specifically, this method is applied to low-lying, continuously cropped medicinal herb cultivation areas. Within each plot, field nodes, ditch nodes, backwater nodes, and rhizosphere irrigation nodes are pre-defined. Field nodes record slope aspect and water flow direction; ditch nodes record inlet elevation, outlet elevation, confluence elevation, and water status; backwater nodes record the opening and closing status of the backwater inlet; and rhizosphere irrigation nodes record the main pipe, branch pipes, and rhizosphere environmental status. After rainfall, the system first collects waterway parameters, then registers whether the ditch section has the conditions to carry pathogens by chain segment registration, and determines the water flow break point at the end of the chain segment. Only after all construction feedback from the isolation structure has been returned does the system allow the plot to enter the microbial fertilizer application process. The microbial fertilizer application stage does not adopt a fixed "fertilizer first, microbial later" or "fertilizer and microbial simultaneous" process. Instead, it first reads the live bacteria count and salt tolerance conductivity of this batch of microbial agent, and then reads the conductivity of the drip irrigation main pipe, branch pipe and rhizosphere soil. Based on the remaining live bacteria and residual salt content, it jointly determines the opening sequence of the clear water valve, microbial liquid valve and fertilizer liquid valve, so that the isolation of the plot waterway and the protection of microbial agent root entry form a continuous control relationship.

[0018] As a further aspect of the present invention, the downstream candidate chain segment of the pathogen migrating with water specifically includes: The elevation difference between the inlet and outlet elevations of the ditch is used to determine the direction of water flow in the ditch. The consistency between the slope of the land parcel and the direction of water flow in the ditch shall be determined. When the slope of the land plot is consistent with the direction of water flow in the ditch, the corresponding ditch segment will be registered as a candidate chain segment for in-line drainage; When the slope of the plot is opposite to the direction of the ditch water flow and the return water inlet is in the open state, the corresponding ditch section will be registered as a candidate return water chain segment. When the slope of the plot is opposite to the direction of the water flow in the ditch, and the inlet is closed, the corresponding ditch section will be removed from the pathogen migration determination range. The candidate chain segments for sequential arrangement and the candidate chain segments for recharge are merged to obtain the downstream candidate chain segments.

[0019] Specifically, the elevations of the ditch inlet and outlet are obtained from an elevation acquisition device under the same measurement benchmark. The system first determines the natural drainage direction of the ditch segment based on the elevation difference between the two, and then matches this natural drainage direction with the plot slope aspect record. When the plot slope aspect points to the ditch drainage direction, it indicates that the field runoff can move downstream along the ditch, and the ditch segment is registered as a candidate segment for upstream drainage. When the plot slope aspect does not match the ditch drainage direction, the system does not directly exclude the ditch segment, but further reads the opening and closing status of the return water inlet. If the return water inlet is open, there is a backflow or recirculation path in the ditch, and the ditch segment is registered as a candidate segment for backflow. If the return water inlet is closed, the ditch segment does not participate in the registration of pathogen migration paths in this round. Through this processing method, the system can uniformly include both upstream drainage and backflow migration scenarios into candidate segments, rather than determining the propagation path solely based on the planar adjacency of plots.

[0020] As a further aspect of the present invention, the carrying chain segment is obtained as follows: Read the turbidity of clear water control ditch sections, the number of floating objects in empty ditch sections, and the displacement of wetted edges in unconnected ditch sections during the same rainfall process; The difference between the turbidity of the ditch water and the turbidity of the clear water control ditch section was used to determine the turbidity triggering result. The difference between the amount of floating root debris and the amount of floating objects in the empty trench section is used to determine the root debris triggering result. The difference between the downstream soil wetting edge advance distance and the wetting edge displacement of the unconnected ditch section is used to determine the wetting advance triggering result. When the turbidity trigger result, root residue trigger result, and moist propulsion trigger result all enter the corresponding trigger position, the corresponding ditch segment will be registered as the carrying chain segment; If any of the results of turbidity triggering, root residue triggering, and moist propulsion triggering fails to enter the corresponding trigger position, the corresponding ditch segment will be registered as a segment to be retested.

[0021] Specifically, the identification of a carrier chain segment is not based on a single ditch water color or a single wet area. Instead, three field reference locations are set up within the same rainfall process: a clear water control ditch segment, an empty ditch segment, and an unconnected ditch segment. The clear water control ditch segment provides the natural turbidity background of the current rainfall, the empty ditch segment provides the background of non-disease-related floating matter, and the unconnected ditch segment provides the background of natural soil wetting progression after rain. The system compares the turbidity state, root debris floating state, and downstream wet progression state of the ditch segment to be judged with the above three field reference locations to make a difference judgment. Only when all three results—ditch water carrying suspended matter, root debris entering the floating count trigger state, and wet edge advancing downstream—are met simultaneously within the same collection period is the ditch segment registered as a carrier chain segment. If only turbidity of the ditch water is observed without floating root debris, or only wet progression is observed without ditch water carrying characteristics, the system marks the segment as a chain segment to be retested, avoiding the misregistration of ordinary rainwater flow as a pathogen-carrying path.

[0022] As a further aspect of the present invention, the water flow chain break point is determined as follows: The clarity of the ditch water, the amount of remaining root debris, and the progress status of the wetted edge are read sequentially at each node along the downstream direction of the carrying chain segment. The current node's ditch water clarity is compared with the clarity of the clear water control ditch section for restoration judgment; The remaining amount of root debris at the current node and the number of floating objects in the empty trench section are used to determine the blockage. The current node's wet edge advancement status is compared with the wet edge position of the previous acquisition cycle to determine a stop. When the recovery determination, blocking determination, and stop determination are all true, the current node is registered as the water flow chain break point; If any of the recovery, blocking, or stopping criteria fails, continue reading the next downstream node; If the downstream medicinal herb plot entrance is still not registered as a water flow break point, register the downstream medicinal herb plot entrance as a prohibited trusted access point.

[0023] Specifically, the water flow chain break point is obtained by reading the water body and edge status node by node along the carrying chain segment. Starting from the upstream end of the carrying chain segment, the system reads the clarity, floating debris residue, and changes in the position of the wet edge at each node in the direction of water flow. The clarity of the ditch water is used to confirm whether the suspended carrying capacity has declined, the amount of root debris residue is used to confirm whether diseased particles are still moving with the water, and the progress of the wet edge is used to confirm whether the downstream soil continues to be affected by water transport. When a node simultaneously meets the three conditions of water body recovery, floating debris blockage, and cessation of wet edge progression, the node is designated as the termination node of this round of carrying chain. If the carrying chain extends to the downstream medicinal herb plot entrance without the above termination node appearing, the system does not allow the downstream plot to enter the trusted access state, but instead registers it as a prohibited trusted access point, and reserves the node for subsequent isolation structure reconstruction or drainage path modification.

[0024] As a further aspect of the present invention, the waterway isolation confirmed access marker is generated specifically as follows: At the upstream node of the water flow break point, the construction width, ditch bottom elevation, downstream medicinal herb root zone elevation, return water inlet distance, sedimentation tank liquid level, root barrier filter belt retention feedback, ridge foot elevation feedback, and return water inlet closure feedback are read. The feasible construction width and the layout width of the sedimentation tank are determined to be compatible. Determine the elevation difference between the bottom elevation of the ditch and the elevation of the root zone of the downstream medicinal herbs; Determine the distance between the return water inlet and the safe distance for the return water seal; When the achievement determination, elevation difference determination, and distance determination are all satisfied, the isolation boundary is fixed at the upstream node; If any of the criteria for reaching an agreement, determining the elevation difference, or determining the distance is not met, continue to backtrack one node upstream and re-perform the determination. When the sedimentation tank level has not reached the overflow trigger position, the root barrier filter belt retention feedback has been completed, the ridge foot elevation feedback has been completed, and the return water inlet closure feedback has been completed, a water path isolation confirmation connection mark is generated.

[0025] Specifically, the isolation boundary is not directly fixed at the water flow break point itself, but rather selected upstream of the break point where an isolation structure can be implemented. The system reads the feasible width, ditch bottom elevation, downstream root zone elevation, and return inlet distance at upstream candidate nodes to confirm whether a sedimentation tank can be installed, whether the isolation point can block the water level in the downstream root zone, and whether there is still a risk of reverse connectivity after the return inlet is closed. When a candidate node does not meet the requirements for construction width, ditch bottom elevation difference, or return inlet closure distance, the system continues to trace back one node upstream until a node location suitable for isolation is determined. After the isolation boundary is determined, the sedimentation tank is used to intercept mud, sand, and diseased particles moving downstream; the root barrier filter is used to intercept root debris; the raised ridge is used to reduce low-level flooding on the field surface; and the closed return inlet is used to cut off the backflow path in the ditch. The system only generates a confirmed waterway isolation access marker after the sedimentation tank level has not reached the overflow trigger state and the root barrier filter, raised ridge, and closed return inlet have all returned completion feedback.

[0026] As a further aspect of the present invention, the opening and closing sequence of the clear water valve, the bacterial solution valve, and the fertilizer solution valve is specifically controlled as follows: The difference between the current viable count level of the microbial agent and the target lowest viable count level in the rhizosphere is determined to obtain the viable count level. The residual conductivity values ​​of the main pipe, the residual conductivity values ​​of the branch pipe, and the conductivity values ​​of the rhizosphere soil were compared with the salt tolerance conductivity levels to determine if they exceeded the limits. When the live bacteria balance setting enters the protection trigger setting, and any one of the residual conductivity values ​​of the main pipe, the branch pipe, or the rhizosphere soil exceeds the conductivity limit, close the fertilizer solution valve and the bacterial solution valve, and open the clean water valve. When the residual conductivity of the main pipe, the residual conductivity of the branch pipe, and the conductivity of the rhizosphere soil have not exceeded the conductivity limit, and the water content of the rhizosphere has reached the level of bacterial solution entering the roots, open the bacterial solution valve. When the bacterial solution valve is opened, and the rhizosphere soil electrical conductivity value has not entered the conductivity over-limit range during the continuous collection period, the fertilizer solution valve is opened. When the fertilizer solution valve is opened and the electrical conductivity of the rhizosphere soil enters the conductivity over-limit range, close the fertilizer solution valve and open the clean water valve.

[0027] Specifically, the viability code of the microbial agent is read when the batch of microbial agent enters the irrigation system. The viability code is used to characterize at least the current viable count level of the microbial agent, the target minimum viable count level in the rhizosphere, and the salt tolerance conductivity level that the microbial agent can withstand. The system first establishes a level difference between the current viable count level and the target minimum viable count level in the rhizosphere to obtain the viable count remaining level. When the viable count remaining level enters the protection trigger state, it indicates that the space for loss of the microbial agent during its entry into the rhizosphere from the main pipe and branch pipes is limited. At this time, the system prioritizes detecting the residual conductivity of the main pipe, the residual conductivity of the branch pipes, and the conductivity of the rhizosphere soil. If the conductivity at any location exceeds the microbial agent's tolerance level, the fertilizer solution valve and the microbial solution valve remain closed, while the clear water valve opens and performs low-pressure buffering. Once the main pipe, branch pipes, and rhizosphere soil all meet the microbial agent's salt tolerance conditions, and the rhizosphere water content meets the requirements for microbial solution entry into the roots, the microbial solution valve opens. After the bacterial solution is added, the system continues to read the electrical conductivity of the rhizosphere soil. The fertilizer solution valve is only allowed to open when the electrical conductivity of the rhizosphere soil remains within the range that the bacterial agent can tolerate during the continuous collection period. If the electrical conductivity of the rhizosphere soil exceeds the limit again after the fertilizer solution is opened, the fertilizer solution valve is immediately closed and the water valve is opened briefly to reduce the inhibition of live bacteria by fertilizer residue.

[0028] As a further aspect of the present invention, before the bacterial solution is added, a bacterial fertilizer scheduling interlocking step is also included: Read the current access marker, water flow break point status, isolation boundary node status, return water inlet opening / closing status, and sedimentation tank level of the plot; When the current access marker of the plot is the waterway isolation confirmed access marker, the status of the water flow break point has not been rewritten by the post-rain retest, the opening and closing status of the return water outlet is closed, and the liquid level of the sedimentation tank has not entered the overflow trigger level, the microbial fertilizer scheduling process is opened. When the status of the water flow chain break point is rewritten by the post-rain retest, the status of the return water outlet changes to open, or the liquid level in the sedimentation tank enters the overflow trigger position, the microbial fertilizer scheduling process is suspended, and the carry chain segment determination and water flow chain break point determination are re-executed.

[0029] Specifically, the microbial fertilizer scheduling process is set up after waterway isolation is confirmed. Before each attempt to open the microbial solution valve, the system re-reads the current access marker of the plot, the status of the water flow break point, the status of the isolation boundary node, the open / closed status of the return water outlet, and the liquid level of the sedimentation tank. If the plot still maintains the confirmed waterway isolation access marker, the break point has not changed position due to post-rain re-measurement, the return water outlet remains closed, and the sedimentation tank liquid level has not entered the overflow trigger state, then the microbial fertilizer scheduling permission for that plot remains open. If post-rain re-measurement reveals that the water flow break point has moved downstream, or the return water outlet has changed from closed to open, or the sedimentation tank liquid level has reached the overflow trigger state, the system suspends microbial fertilizer scheduling, ceases microbial solution and fertilizer application, and returns to the chain segment determination process to re-determine the break point. Through this interlocking method, the microbial fertilizer application action is always constrained by the waterway isolation status of the plot, preventing the continued application of microbial agents and fertilizer solutions to the rhizosphere when the risk of waterway transmission has not been eliminated.

[0030] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in the present invention should be included within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the scope of the claims.

Claims

1. A method for efficient cultivation of Chinese medicinal herbs to prevent continuous cropping, characterized in that, Includes the following steps: S1: Collect the following information for continuously cropped medicinal herb plots: plot slope, ditch inlet elevation, ditch outlet elevation, ditch confluence elevation, backwater inlet opening / closing status, duration of post-rainwater accumulation, ditch water turbidity, amount of floating root debris, and downstream soil wetting edge advancement distance. S2: Determine the elevation difference at the bottom of the ditch based on the elevation of the ditch inlet, the elevation of the ditch outlet, and the elevation of the ditch intersection, and determine the consistency of the elevation difference at the bottom of the ditch with the slope of the plot to obtain downstream candidate segments of pathogen migration with water; S3: Simultaneously trigger and determine the turbidity of the ditch water, the amount of floating root debris, and the advancing distance of the downstream soil wetting edge in the downstream candidate chain segments to obtain the carrying chain segments; S4: Read the ditch water clarity, the amount of remaining root debris and the progress status of the wetted edge along the water flow direction of the carrying chain segment, determine the water flow chain break point, and set the isolation boundary at the upstream node of the water flow chain break point; S5: Perform the following actions at the isolation boundary: set up a sedimentation tank, set up a root barrier filter, raise the embankment foot, and close the return water inlet. After all four actions have returned to the completion mark, generate a waterway isolation confirmed access mark. S6: After generating the confirmed access mark for waterway isolation, read the current viable count level of the inoculant, the minimum viable count level of the target rhizosphere, the remaining viable count level, the salt tolerance conductivity level, the residual conductivity value of the main pipe, the residual conductivity value of the branch pipe, the conductivity value of the rhizosphere soil, and the rhizosphere water content. S7: Based on the remaining live bacteria level, salt tolerance conductivity level, residual conductivity of the main pipe, residual conductivity of the branch pipe, and conductivity of the rhizosphere soil, control the opening and closing sequence of the clear water valve, bacterial solution valve, and fertilizer solution valve so that the clear water first forms a buffer zone for the main pipe, branch pipe, and rhizosphere, then the bacterial solution valve is opened, and the fertilizer solution valve is opened after the rhizosphere conductivity meets the salt tolerance conditions of the bacterial agent.

2. The method for efficient cultivation of Chinese medicinal herbs to prevent continuous cropping according to claim 1, characterized in that: The downstream candidate segments of the pathogen that migrate with water are specifically: The elevation difference between the inlet and outlet elevations of the ditch is used to determine the direction of water flow in the ditch. The consistency between the slope of the land plot and the direction of water flow in the ditch is determined. When the slope of the plot is consistent with the direction of water flow in the ditch, the corresponding ditch segment will be registered as a candidate chain segment for sequential drainage; When the slope of the plot is opposite to the direction of the water flow in the ditch, and the return water inlet is in the open state, the corresponding ditch segment is registered as a candidate return water chain segment. When the slope of the plot is opposite to the direction of the water flow in the ditch, and the inlet is closed, the corresponding ditch section will be removed from the pathogen migration determination range. The upstream candidate chain segment and the downstream candidate chain segment are merged to obtain the downstream candidate chain segment.

3. The method for efficient cultivation of Chinese medicinal herbs to prevent continuous cropping according to claim 1, characterized in that, The process of obtaining the carrying chain segment specifically involves: Read the turbidity of clear water control ditch sections, the number of floating objects in empty ditch sections, and the displacement of wetted edges in unconnected ditch sections during the same rainfall process; The difference between the turbidity of the ditch water and the turbidity of the clear water control ditch section is used to determine the turbidity triggering result. The difference between the floating amount of root debris and the number of floating objects in the empty trench section is used to determine the root debris triggering result. The difference between the downstream soil wetting edge advance distance and the wetting edge displacement of the unconnected ditch section is used to determine the wetting advance triggering result. When the turbidity trigger result, root residue trigger result and moist propulsion trigger result all enter the corresponding trigger position, the corresponding ditch segment is registered as the carrying chain segment; If any of the results of the turbidity triggering, root residue triggering, and moist propulsion triggering does not enter the corresponding triggering position, the corresponding ditch segment will be registered as a chain segment to be retested.

4. The method for efficient cultivation of Chinese medicinal herbs to prevent continuous cropping according to claim 1, characterized in that, The determination of the water flow chain break point specifically involves: The clarity of the ditch water, the amount of remaining root debris, and the progress status of the wetted edge are read sequentially at each node along the downstream direction of the carrying chain segment. The current node's ditch water clarity is compared with the clarity of the clear water control ditch section for restoration judgment; The remaining amount of root debris at the current node and the number of floating objects in the empty trench section are used to determine the blockage. The current node's wet edge advancement status is compared with the wet edge position of the previous acquisition cycle to determine a stop. When the recovery determination, blocking determination, and stop determination are all true, the current node is registered as a water flow chain break point; If any of the recovery determination, blocking determination, and stop determination is not met, continue reading the next downstream node; If the downstream medicinal herb plot entrance is still not registered as a water flow break point, then the downstream medicinal herb plot entrance will be registered as a prohibited trusted access point.

5. The method for efficient cultivation of Chinese medicinal herbs to prevent continuous cropping according to claim 1, characterized in that, The generated waterway isolation has been confirmed with access markers, specifically: The following data are collected at the upstream node of the water flow break point: the constructable width, the bottom elevation of the ditch, the elevation of the root zone of the downstream medicinal herbs, the distance to the return water inlet, the liquid level of the sedimentation tank, the root barrier filter belt retention feedback, the ridge foot elevation feedback, and the return water inlet closure feedback. The feasible width and the layout width of the sedimentation tank are determined to be compatible. Determine the elevation difference between the bottom elevation of the ditch and the elevation of the root zone of the downstream medicinal herb. The distance between the return water inlet and the safe distance for the return water seal are determined; When the achievement determination, elevation difference determination, and distance determination are all satisfied, the isolation boundary is fixed at the upstream node; If any of the achievement determination, elevation difference determination, and distance determination is not met, continue to backtrack one node upstream and re-determine; When the sedimentation tank level has not entered the overflow trigger position, the root barrier filter belt retention feedback return is completed, the ridge foot elevation feedback return is completed, and the return water inlet closure feedback return is completed, the water path isolation confirmed access mark is generated.

6. The method for efficient cultivation of Chinese medicinal herbs to prevent continuous cropping according to claim 1, characterized in that, The opening and closing sequence of the control valves for clear water, bacteria solution, and fertilizer solution is as follows: The difference between the current viable count level of the microbial agent and the target lowest viable count level in the rhizosphere is determined to obtain the viable count level. The residual conductivity values ​​of the main pipe, the residual conductivity values ​​of the branch pipe, and the conductivity values ​​of the rhizosphere soil were compared with the salt tolerance conductivity levels to determine if they exceeded the limits. When the live bacteria balance setting enters the protection trigger setting, and any one of the residual conductivity values ​​of the main pipe, the branch pipe, or the rhizosphere soil exceeds the conductivity limit, close the fertilizer solution valve and the bacterial solution valve, and open the clean water valve. When the residual conductivity of the main pipe, the residual conductivity of the branch pipe, and the conductivity of the rhizosphere soil have not exceeded the conductivity limit, and the water content of the rhizosphere has reached the level of bacterial solution entering the roots, open the bacterial solution valve. When the bacterial solution valve is opened, and the rhizosphere soil electrical conductivity value has not entered the conductivity over-limit range during the continuous collection period, the fertilizer solution valve is opened. When the fertilizer solution valve is opened and the electrical conductivity of the rhizosphere soil enters the conductivity over-limit range, close the fertilizer solution valve and open the clean water valve.

7. The method for efficient cultivation of Chinese medicinal herbs to prevent continuous cropping according to claim 1, characterized in that, Before administering the bacterial solution, a microbial fertilizer scheduling and interlocking step is also included: Read the current access marker of the plot, the status of the water flow break point, the status of the isolation boundary node, the opening and closing status of the return water outlet, and the liquid level of the sedimentation tank; When the current access marker of the plot is the waterway isolation confirmed access marker, the status of the water flow break point has not been rewritten by the post-rain retest, the opening and closing status of the return water inlet is closed, and the liquid level of the sedimentation tank has not entered the overflow triggering state, the microbial fertilizer scheduling process is opened. When the status of the water flow chain break point is rewritten by the post-rain retest, the opening / closing status of the return water inlet changes to open, or the liquid level of the sedimentation tank enters the overflow trigger position, the microbial fertilizer scheduling process is paused, and the carrying chain segment determination and water flow chain break point determination are re-executed.

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