In situ heat injection treatment device of root nematodes in soil

Abstract

The invention provides an in situ heat injection treatment device of root nematodes in soil. The in situ heat injection treatment device comprises a steam distribution chamber, a heat injection mechanism and a supporting plate, wherein the supporting plate is connected with the steam distribution chamber through an elastic mechanism, and the heat injection mechanism comprises a heat injection pipe and a protecting sleeve; the upper end of the heat injection pipe is fixedly connected to the bottom of the steam distribution chamber and is communicated with the inside of the steam distribution chamber, and the protecting sleeve is rotatably arranged on the supporting plate in situ; the protecting sleeve is sleeved on the heat injection pipe, and the two ends of the heat injection pipe extend out of the protecting sleeve; air outlets are distributed in the wall of the heat injection pipe and a pin shaft is arranged on the heat injection pipe, and air outlet slots are distributed in the wall of the protecting pipe and a spiral slot is arranged in the protecting pipe; the pin shaft in the heat injection pipe is positioned in the spiral slot, and the steam distribution chamber is a sealed container; and a steam inlet is arranged in the steam distribution chamber. The in situ heat injection treatment device provided by the invention has the advantages of simple structure, convenience in operation, low treatment cost and good effects, and effectively kills the root nematodes in soil though steam heat injection in situ.

Description

technical field [0001] The invention relates to a heat injection mechanism for killing root nematodes in soil by injecting heat with steam, which simultaneously plays the role of moisturizing and loosening the soil, and belongs to the technical field of soil root nematode control. Background technique [0002] While the vegetable basket is constantly enriched, the problem of "pesticide residues" is also a lingering shadow. Under the current circumstances, there are many effective methods to solve the problem of "pesticide residues", but these methods will greatly increase the cost of vegetables, thereby affecting sales. [0003] The "pesticide residues" of vegetables can be roughly divided into two situations. One is the pesticide residues caused by direct spraying of pesticides on vegetables, and the other is the pesticide residues caused by vegetable plants directly absorbing pesticides from the soil containing pesticide residues. The first situation is easy to attract ev...

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Problems solved by technology

[0018] Chinese patent document CN102599139A discloses a "manufacturing method of external heating soil sterilization and insecticide device", CN102599140A discloses an "installation method of integrated soil sterilization and insecticide device", and CN102599141A discloses an "integrated soil sterilization device". "Sterilization and insecticide device" and a kind of "external heating soil disinfection and sterilizer" disclosed by CN202489109U all reach the purpose of sterilization and insecticide by heating the soil, but its disadvantage is that the soil needs to be transported in different places, and the amount of engineering is large and transportation High cost, difficult to practical application

This technology also uses physical high temperature to control root nematodes. Its disadvantages are: complex structure, soil displacement is required, and the flame of the "soil baking device" reverberatory furnace directly contacts the soil, which cannot keep the soil evenly baked, and Baking at high temperature can easily destroy the aggregate structure of the soil, and cause soil compaction, affecting the growth and development of plants

In this way, all the organic components in the soil are burned, lose their arable properties, and consume a lot of energy

This method is only suitable for separating pollutants through high-temperature heating of "soil" that has suffered heavily

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