Orchard traction type double-fertilizer-box variable fertilizer applicator and fertilization method

Abstract

The invention discloses an orchard traction type double-fertilizer-box variable fertilizer applicator and a fertilization method. The variable fertilizer applicator comprises a traction machine, a GNSS/INS combined positioning device, a vehicle-mounted computer, two hydraulic ditching mechanisms, double fertilizer boxes, two hydraulic auger mechanisms, two hydraulic fertilizer discharging mechanisms, two soil covering devices, a transfer gear box and a hydraulic power system, wherein the GNSS/INS combined positioning device is adopted, when GNSS positioning signals are poor, automatic switching to INS positioning is carried out, the phenomenon that the GNSS positioning signals are poor or signal losing are caused due to fruit tree canopy closing is avoided, and accurate navigation of a unit is guaranteed; and a hydraulic power system is controlled by the vehicle-mounted computer, so that closed-loop control over the hydraulic ditching mechanisms, the hydraulic auger mechanisms and thehydraulic fertilizer discharging mechanisms can be respectively realized, integrated operation of forming two ditches, variable application of two kinds of granular fertilizers and soil covering can be completed, and the operation efficiency is high.

Description

technical field [0001] The invention relates to the technical field of intelligent agricultural machinery equipment and agricultural variable input methods, and more specifically relates to an orchard traction type double fertilizer that can realize double ditch opening between rows of orchards close to fruit trees, variable application of two kinds of granular fertilizers, and soil covering operations. Box variable fertilizer spreader and fertilization method. Background technique [0002] Spatial variability of soil fertility and scientific methods of fertilization lead to significant differences in crop yield, quality and benefit. Precisely increasing the application of organic fertilizers and reducing the application of chemical fertilizers is a key scientific and technical issue for orchard soil improvement, quality improvement and efficiency increase. Fertilization methods in orchards mainly include: fertilization in furrows, fertilization in pits, spreading in the wh...

AI Technical Summary

Problems solved by technology

[0006] 1. The traditional densely planted fruit tree planting model has a small row spacing and cannot enter the machine, which restricts the development of mechanization, resulting in high labor intensity and high labor costs

[0007] 2. Closed fruit trees lead to poor satellite positioning signals or missing satellites, and it is relatively difficult to locate and navigate between rows of orchard machines

[0008] 3. The depth of fertilization and ditching for fruit trees is much greater than that of field crops, and it requires integrated operations of ditching, fertilization, and soil covering, and its machine tool structure and control are relatively complicated

[0010] 1. The electro-hydraulic proportional control adopts the hydraulic output of the tractor, which does not have an independent oil source, which is prone to oil pollution and causes the spool of the electro-hydraulic proportional valve to be stuck

[0011] 2. Since the hydraulic power system adopts the throttling and speed-regulating working method, the temperature rise of the oil is relatively large, which may easily cause internal leakage of the motor and cause the motor speed to be unstable

[0012] 3. When the rotation speed of the outer groove wheel fertilizer discharger is high and the remaining fertilizer in the fertilizer box is small, under the action of its own weight, the fertilizer cannot quickly fill the groove space of the fertilizer discharger, resulting in unstable fertilizer discharge

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