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This invention relates to the field of zinc alloy surface modification technology, and particularly to a corrosion-resistant medical zinc alloy, its preparation method, and its applications. The preparation method includes the following steps: weighing raw materials according to the chemical composition of the zinc alloy; cleaning the surface of the raw materials; smelting, refining, and casting to obtain an ingot; subjecting the ingot to equal-channel angular extrusion deformation to obtain an extruded zinc alloy; performing high-energy ion implantation on the zinc alloy to obtain a nitrogen-ion-implanted zinc alloy; and preparing a coating on the surface of the nitrogen-ion-implanted zinc alloy to obtain the final product. This invention achieves a high-adhesion, dense, and uniform deposition effect on the alloy surface through the synergistic control of "equal-channel angular extrusion + high-energy nitrogen ion implantation + biomimetic coating deposition," solving the problem of severe galvanic corrosion at localized sites in existing zinc alloys under corrosive environments. Simultaneously, the dense deposition layer helps inhibit rapid dissolution of the zinc alloy surface, significantly reducing the corrosion rate of the zinc alloy in corrosive environments.

This utility model discloses a konjac planting fertilizer applicator, including a moving component for movable support and rotating soil turning. The top of the moving component is equipped with a conveying component for evenly distributing fertilizer, and the bottom of the conveying component is equipped with a guiding component for distributing fertilizer. Two symmetrically arranged burying components at the bottom of the guiding component are used to bury the fertilizer deep into the soil. In this utility model, a cylinder drives a pneumatic hammer to push the fertilizer, allowing it to reach deep into the soil for better root absorption. The design of the spiral rotating rod distributing fertilizer ensures a stable fertilizer output and breaks up lumps to prevent agglomeration. A baffle plate swings left and right to distribute the fertilizer, simultaneously fertilizing two rows of soil, saving manpower and improving work efficiency. The clamps can be moved to move the pushing tube according to the spacing between the two rows of konjac plants, adjusting the fertilizer's falling position, making the device highly practical.