A straw in-situ granulation deep ploughing machine

By designing a deep straw granulation and return-to-field machine that integrates functions such as ditching, fertilization, and soil covering, the problem of straw granulation and return-to-field in existing technologies has been solved. This achieves deep and precise application and efficient decomposition of straw granules, improves soil fertility, and reduces operating costs.

CN122123210APending Publication Date: 2026-06-02LIAONING ACAD OF AGRI SCI
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
LIAONING ACAD OF AGRI SCI
Filing Date
2026-04-08
Publication Date
2026-06-02

AI Technical Summary

Technical Problem

Existing straw return machinery lacks specialized deep-return equipment for granulated straw. Conventional fertilization or sowing machinery is difficult to adapt to the physical characteristics of granulated straw, resulting in straw being prone to floating, wind damage, and low decomposition efficiency. Furthermore, it cannot achieve integrated operations of ditching, deep application, and soil covering.

Method used

A deep straw return machine with in-situ pelleting was designed, integrating components such as a ditching disc cutter, a straw feeding roller, a straw pellet agitator impeller, and a soil covering and pressing wheel, to achieve precise application, uniform distribution, simultaneous fertilization, and integrated soil covering of straw pellets.

Benefits of technology

It enables deep and precise application of straw pellets, avoiding floating losses, enhancing contact with the soil, significantly accelerating the decomposition rate, improving soil fertility, reducing the number of times agricultural machinery needs to enter the field, and reducing energy consumption and operating costs.

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Abstract

This invention provides a straw in-situ pelletizing and deep returning machine, comprising a main frame, a straw in-situ pellet storage box, a ditching disc cutter, a straw in-situ pellet returning conveyor pipe, a straw pellet agitator impeller, a soil covering and compaction wheel, and a rear-mounted burying wheel. During operation, the front-mounted soil-dispensing wheel clears the surface, the ditching disc cutter digs deep trenches, and the straw pellets in the storage box fall into the trenches under gravity through the conveyor pipe, where they are dispersed and prevented from clogging by the agitator impeller. Fertilizer can be applied simultaneously, followed by soil covering, compaction, and shaping by the soil covering and compaction wheel and the rear-mounted burying wheel. This machine achieves integrated in-situ, quantitative, deep burial, and uniform returning of straw pellets to the field, effectively solving problems such as easy floating, slow decomposition, and impact on sowing associated with traditional straw returning methods. It has advantages such as reasonable structure, reliable anti-clogging, strong adaptability, and environmental friendliness and efficiency, and is suitable for the resource utilization of straw in various types of farmland.
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