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Technique for prevention and control of stored grain by using ozone technology

An ozone technology and pest technology, applied in the field of stored grain pests, can solve problems such as increased residues, decreased hygienic quality, and damage to the health of employees, and achieve the effects of preventing heat and mildew in stored grains and good bactericidal effects

Inactive Publication Date: 2009-09-23
JINGANG STEEL STRUCTURE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] 2. Pests are rampant again
[0005] 3. Residual increase
Although phosphine belongs to low residue, if it is used in excess of the standard for many times for a long time, the residue will also be produced, even exceeding the standard. According to the survey in some areas of our province, it is found that the stored grain exceeds the national standard of 0.05ppm by 7-8 times, resulting in a decline in hygienic quality
[0006] 4. Pollution of the environment and damage to the health of employees
Phosphine is a kind of poisonous gas. Due to the poor seal of the warehouse, leakage often occurs, polluting the surrounding environment

Method used

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  • Technique for prevention and control of stored grain by using ozone technology
  • Technique for prevention and control of stored grain by using ozone technology

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] Its main control steps of the present invention are as follows:

[0027] A. The insecticidal season for stored grains is from April to June in the Gregorian calendar. This period of time is chosen in consideration of the temperature of the upper layer>middle layer>lower layer of the grain pile during this period. Generally, stored grain pests are thermotropic, and the temperature difference also promotes the accumulation of pests upwards. , easy to kill insects;

[0028] B. Use a polyvinyl chloride film 1 with a thickness of 0.2 microns to seal the surface of the grain pile 2 for 18 days. At this time, the grain pile 2 is in a sealed state, due to the respiration of the grain, microorganisms and pests, gradually consume part of the grain pile Oxygen and increase the content of carbon dioxide. Because the specific gravity of carbon dioxide is greater than that of air, it sinks slowly. In addition, the plastic film has allowed micropores, so the oxygen concentration in th...

Embodiment 2

[0032] Its main control steps of the present invention are as follows:

[0033] A. The season for storing grain and killing insects is September in the Gregorian calendar;

[0034] B. use the polyvinyl chloride film 1 that thickness is 0.15 micron to seal the grain pile 2 surface layer for 20 days;

[0035] C. If figure 1 As shown, the ozone generator 3 is poured into the grain pile 2 with a concentration of 10 ppm ozone for 18 hours from the bottom of the grain pile 2 through the circulating pipe 4, and the ozone is accelerated by the wind force of the blower fan 5 and enters the grain pile 2 from bottom to top, thereby deterring pests. Drive to the upper layer of the grain pile 2, and the situation of the pests can be observed through the observation port 8 left on the film 1;

[0036] D. If figure 2 Shown, now with four ozone generators 3 ozone through circulation tube 4 docking eight bell mouths reserved on the film 1, the concentration that ozone generator 3 produces ...

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Abstract

The invention relates to a method for preventing and controlling pests, in particular to a method for controlling stored grain pests such as corn weevil, grain beetle, red corn beetle, and long-horned plank beetle by using ozone technology. Its main control steps are mainly composed of three steps: sealing, deworming and killing insects. It has the following characteristics: 1. It no longer pollutes the environment, and there is no residue. Because ozone decays quickly at normal temperature and pressure, it only takes 20-50 minutes to form oxygen and oxygen ions; 2. It has no major impact on the health of employees and will not cause occupational diseases; 3. It will not produce resistance to pests for a long time sex.

Description

technical field [0001] The invention relates to a technology for preventing and controlling pests, in particular to a method for controlling stored grain pests such as corn weevil, grain beetle, red corn beetle, and long-horned plank beetle by using ozone technology. Background technique [0002] At present, the control of stored grain pests mainly depends on chemical agents. Among the world's two major fumigants, methyl bromide has been banned as a depletion of the atmospheric ozone layer. The application of phosphine to kill insects in stored grains began in Germany in the 1930s. It is a high-efficiency, low-toxicity, low-residue insecticide with broad-spectrum insecticide, convenient use and low price. So far, there is no new fumigant in the world to replace. my country introduced it in the early 1960s, started production in 1965, and is widely used. In the first decade or so, the pests were very sensitive to phosphine and had a strong knockdown effect, which basicall...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A23B9/22A23B9/00
Inventor 王朝晖
Owner JINGANG STEEL STRUCTURE
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