A method of killing citrus psyllid nymphs based on a ground self-propelled wheeled machine using microwaves

Abstract

The invention discloses a method for killing citrus psyllid nymphs by using microwaves based on a ground self-propelled wheeled machine, and relates to the technical field of microwave applications. The present invention divides the positive rate of citrus psyllid into 3 grades, which are respectively <40%, ≥40% and <80%, ≥80%; then different microwave killing processes are adopted for different positive rates of psyllid, When using 2-4 sorties of self-propelled wheeled machines to kill psyllid nymphs at intervals, the microwave power is gradually increased from the lowest 500-800 W to the highest 1800-2000 W, and the microwave frequency is gradually reduced from the highest 2.4-2.5 GHz to 890-940 MHz. After microwave treatment with different intensities and penetration depths by a self-propelled wheeled machine, the psyllid nymphs in various parts of the citrus are killed through the thermal and non-thermal effects of microwaves. The present invention can significantly kill citrus psyllid nymphs, and the detection rate of citrus psyllids can be reduced by more than 90% after microwave treatment, which greatly reduces the population of citrus psyllids in the orchard, and limits the ability of psyllids to spread citrus greening disease. Effectively preventing the transmission and spread of huanglongbing without the use of chemicals is a low-cost, ecological, environmentally friendly and efficient method of killing psyllid nymphs.

Description

technical field [0001] The invention belongs to the technical field of microwave applications, and in particular relates to a method for killing citrus psyllid nymphs by using microwaves based on a ground self-propelled wheeled machine. Background technique [0002] Citrus Huanglongbing (Huanglongbing) is currently the number one devastating disease of citrus production in the world, which is caused by Phloem bacteria parasitic in the phloem of plants. Due to the serious harm and high fatality rate, and the lack of effective prevention and control methods so far, Huanglongbing is called the "cancer" of citrus. [0003] The citrus psyllid is the only natural carrier of Huanglongbing in the field. In the whole life cycle of the citrus psyllid, there are three stages: eggs, nymphs and adults. Effectively controlling the population of citrus psyllid is an effective way to control citrus greening disease. The traditional control methods of citrus psyllid mainly include physical...

AI Technical Summary

Problems solved by technology

Chinese patent CN201810639091 (application number) discloses the application of a special light source in trapping citrus psyllids and the citrus psyllid trap. The wavelength of the special light source is 409.9nm~511.6nm. Greatly improve the effect of trapping citrus psyllids with light; at the same time, the wavelength of the special light source is single, the pertinence is strong, the specificity of trapping citrus psyllids is strong, and the damage to other insects, especially beneficial insects, is small

Microwave insecticide has been well applied in the control of some pests, but there is no microwave killing method for citrus psyllids

[0005] Citrus psyllid adults have the characteristics of bouncing and short-distance flight. When killing psyllid adults in orchards, the psyllids will escape everywhere and the killing effect is not good.