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High-power centimeter wave temperature controlling method for heat-killing plant insect

A plant pest, centimeter wave technology, applied in the device, application, animal husbandry and other directions of capturing or killing insects, can solve the problems of low microwave frequency, unsuitable pests, slow pest control effect, etc., to achieve convenient use and operation, low cost effect

Inactive Publication Date: 2011-03-30
EAST CHINA NORMAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Since the mid-1980s, the focus of pest control has been on the use of natural enemies to control pests, but there are still many natural enemies that are difficult to control due to their narrow range of adaptation to the environment, more sensitive responses to pesticides than pests, or slow control of pests. Playing an Important Role in Sustainable Pest Control
[0005] Regarding the patent application for microwave insecticide, the Chinese patent "A Microwave Electromagnetic Field Radiation Energy Insecticide (Patent No. 01273962.6)" announced in 2003 uses a microwave frequency of 915-2450MHz. The penetration depth is relatively large (greater than 1cm), and the size of pest larvae is on the order of mm, so the insecticidal effect of using this frequency range is not good
In addition, the mechanism of killing pests is the electromagnetic wave biothermal effect, that is, the individual pests absorb microwave energy and cause their body temperature to rise rapidly and die. Vegetables and crops also contain a lot of water, and the irradiation process also absorbs a lot of energy and the temperature rises , thereby causing damage or even death to crops, etc., so the device and method are not suitable for killing pests in plants
The Chinese patent "Microwave Weeding and Sterilization Method and Microwave Weeding and Pesticide Sterilization Machine (Patent No. 02129628.6)" announced in 2003, integrates weeding, insecticide and sterilization. Although it kills pests, it also damages green areas such as lawns. Plants, therefore also not suitable for killing pests in plants, only suitable for killing pest larvae and eggs and seeds of weeds in the soil before the crops are cultivated

Method used

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  • High-power centimeter wave temperature controlling method for heat-killing plant insect
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Examples

Experimental program
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Effect test

Embodiment 1

[0024] Start the centimeter wave emission system, adjust its output power, and emit centimeter waves. At the same time, use an infrared thermometer to remotely measure the surface temperature of the lawn at the irradiation place. When the surface temperature of the lawn reaches about 55°C, stop the irradiation, and emit centimeter waves again after 10s. The infrared thermometer measures the surface temperature of the lawn at the irradiated place, and the irradiation ends when the surface temperature of the lawn reaches about 55°C again. The damage was 22%, and the lawn was completely recovered 7 days after irradiation.

Embodiment 2

[0026] Start the centimeter wave emission system, adjust its output power, emit centimeter waves, and use an infrared thermometer to remotely measure the surface temperature of the irradiated lawn. When the surface temperature of the lawn reaches about 50°C, stop the irradiation, and emit centimeter waves again after 10s. The infrared thermometer measures the surface temperature of the lawn at the irradiation place, and the irradiation ends when the surface temperature of the lawn reaches about 50°C again. When this operation process is completed, the mortality rate of the pests on the lawn reaches 80%. The damage was 12%, and the lawn was completely recovered 5 days after irradiation.

Embodiment 3

[0028] Start the centimeter-wave emission system, adjust its output power, and emit centimeter waves. At the same time, use an infrared thermometer to measure the surface temperature of the lawn at the irradiation place remotely. When the surface temperature of the lawn reaches about 60°C, stop the irradiation. When this operation process is completed , the mortality rate of pests on the lawn reached 86%, while the observation found that the lawn damage was 9.5%, and the lawn completely recovered 15 days after irradiation.

[0029] The foregoing examples illustrate the operation and effects of turf surfaces reaching different temperatures during irradiation. In specific applications, the temperature and irradiation intervals can be appropriately adjusted according to changes in different environments (such as wind speed, temperature, etc.), so as to achieve effective insecticide without seriously damaging the lawn.

[0030] Practice has proved that the use of f=10-35GHz microw...

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Abstract

The present invention belongs to the field of agricultural environment-protecting type pests-killing technology. In the concrete, it relates to a method for killing plant pests by adopting high-power centimeter wave temperature-controlled heat. It is characterized y that said invention adopts a high-power centimeter wave emitting system to orientably emit centimeter wave to directly radiate plants, in which the frequency of radiation is at least twice, and the frequency range of said centimeter wave is 10-35 GHz.

Description

technical field [0001] The invention belongs to the technical field of agricultural and environment-friendly pest killing, and in particular relates to a method for killing plant pests with high-power centimeter-wave temperature-controlled heat. Background technique [0002] According to the analysis of the reasons for the continuous development of my country's biological control technology by the Chinese Academy of Sciences, at present, my country needs to use 300,000 tons of pesticides worth 9 billion yuan each year to eliminate crop pests with an area of ​​tens of millions of hectares. Such a large amount of pesticides actually exerts an insecticidal effect Only 5% of the pesticides are lost, and more than 95% of the pesticides are lost to the air, soil, and waters, causing large-scale environmental pollution and seriously affecting the quality of my country's agricultural, livestock, and aquatic products. The gradual accumulation of pesticides into the human body is the ca...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A01M1/20
Inventor 张杰韩黎军齐红星陈树德乔登江
Owner EAST CHINA NORMAL UNIV