An adaptive targeted medicine-spraying saline-alkali soil alkali spot treatment machine based on roller pressure sensing

By integrating soil breaking and precise application with an adaptive targeted sprayer based on roller pressure sensing, the problem of the separation between physical and chemical improvement in saline-alkali land management has been solved, achieving efficient and low-cost saline-alkali land management and precise application of soil conditioners.

CN122207408APending Publication Date: 2026-06-16NORTHEAST AGRICULTURAL UNIVERSITY
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
NORTHEAST AGRICULTURAL UNIVERSITY
Filing Date
2026-03-26
Publication Date
2026-06-16

AI Technical Summary

Technical Problem

Existing saline-alkali land management technologies separate physical and chemical improvement processes, resulting in cumbersome and inefficient procedures. Furthermore, traditional application methods cannot identify the spatial heterogeneity of soil salinization, leading to low utilization rates of soil conditioners, significant waste, and high management costs.

Method used

An adaptive targeted pesticide application machine based on roller pressure sensing was designed, which integrates soil crushing, fertilization and precision pesticide application functions. By sensing the difference in soil hardness through roller pressure, the machine uses a mechanical roller pressure sensing mechanism to achieve automatic identification and precise pesticide application of alkaline spot areas, and combines a wireless control module to achieve remote monitoring.

Benefits of technology

It has enabled continuous and integrated operations for saline-alkali land management, improved operational efficiency, reduced costs, decreased waste of soil amendments and environmental pollution, and supported intelligent management of precision agriculture.

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Abstract

The application discloses a self-adaptive targeted medicine application saline-alkali soil alkali spot treatment machine based on roller pressure sensing and belongs to the technical field of agricultural machinery. The treatment machine comprises a rack, a double-layer fertilizer box, a spiral soil crushing knife and a rolling and medicine feeding roller. The core lies in multiple groups of medicine feeding cutters arranged in the circumferential direction of the rolling and medicine feeding roller and corresponding sensing control units and medicine application control valves. During operation, the spiral soil crushing knife first crushes the soil, and then the rolling and medicine feeding roller rolls and presses the ground. When the rolling and medicine feeding roller rolls and presses the hard alkali spot area, the corresponding medicine feeding cutter is radially displaced under pressure, a signal is generated by triggering the photoelectric switch through the convex gear transmission, the electromagnetic valve is opened, and the liquid medicine is accurately injected into the alkali spot soil through the medicine feeding cutter. After driving away, the mechanism is automatically reset and the valve is closed. The application realizes the combined operation of physical and chemical improvement of the saline-alkali soil, automatic identification of the alkali spot based on the soil hardness and targeted accurate medicine application, and has the advantages of high operation efficiency, high utilization rate of the improvement agent, low cost and environmental protection.
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