Soil purifier and purifying method thereof

Abstract

The invention discloses a soil purifier and a purifying method thereof. The soil purifier comprises an unmanned tractor, a power system of the unmanned tractor is in transmission connection with a speed change control system, the output end of the speed change control system is connected with a serve power generator, a PLC (programmable logic controller) is mounted on a rack of the unmanned tractor and is in control connection with the speed change control system, and an electromagnetic wave transmitter and a plurality of electrode sets are mounted at the bottom of the rack; an ultrasonic detector is mounted at the bottom of the rack and is in signal connection with the PLC, and a coder is mounted on the servo power generator and is in signal connection with the PLC. Activities of microorganisms in soil are detected through the ultrasonic detector, double effects of pulse voltage breakdown and high-frequency electromagnetic radiation are utilized to kill molluscous microorganisms like root-knot nematode, killing is thorough, good in effect and high in efficiency, the soil purifier is environment-friendly, the problem of pesticide residue on crops is avoided, and the soil purifier is suitable for popularization and application.

Description

technical field [0001] The invention belongs to the technical field of agricultural plant protection, and in particular relates to a soil purifier and a purification method thereof. Background technique [0002] Bacteria and insect pests have a great impact on crops. Due to the continuous cropping of crops, soil-borne diseases and insect pests, especially the damage of soil root-knot nematodes, are spreading, resulting in large-scale production reduction or even failure of vegetables. At present, the prevention and control of root-knot nematode mainly adopts traditional pesticide killing methods, such as carbofuran, Shennongdan and other highly toxic pesticides to prevent pests and diseases. With the enhancement of the resistance of root-knot nematodes, the toxicity of pesticides has gradually increased, thus forming a vicious circle. While killing root-knot nematodes, highly toxic pesticides have also caused serious harm to the environment, leading to soil damage. The plan...

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Problems solved by technology

[0004] At present, there are devices on the market that use high-temperature flame spraying to sterilize soil. Although this flame sterilization method can achieve short-term sterilization and insecticide effects, the biological activity of the sterilized insects will not be completely destroyed. At the same time, the use of flame Sterilization can only kill the bacteria and insects in the contact part of the flame, and it is difficult to completely kill the bacteria and insects in the inner layer of the soil

[0005] At present, there are also related reports on the use of electromagnetic waves for sterilization. Electromagnetic wave effects and biological effects are used to kill bacteria. However, the irradiation time of electromagnetic wave sterilization is long, and it is difficult to kill root-knot nematodes in the inner layer of soil by electromagnetic wave sterilization alone. Mollusc microorganisms, especially eggs and adults that hide inside plant roots

[0006] In addition, due to the different distribution densities of microorganisms such as root-knot nematodes in the soil and the difference in soil moisture, the existing physical sterilization equipment cannot carry out targeted killing according to the density of root-knot nematodes in the soil, and the killing effect is not ideal

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