Device and method for determining virulence of whitefly pests by using living plant

Abstract

The invention relates to a device and method for determining virulence of whitefly pests by using a living plant. The device is composed of a gauze bag (1), a ring piece (5) arranged in the middle ofthe gauze bag (1), and a drawstring (3), wherein a gauze bag opening (6) is arranged at the end of the gauze bag (1), a hollow folding edge (4) is arranged at the gauze bag opening (6), and the drawstring (3) is penetrated into the folding edge (4); a pest feeding opening (2) is opened on the gauze bag (1); the gauze bag (1) comprises two structures A and B; and the like. According to the scheme of the invention, the virulence determination method of the whitefly pests in many key links is limited, so that the stability and consistency of the virulence determination can be ensured, a solid foundation and guarantee can be laid for accurate virulence determination, and by applying the virulence determination results of the invention, the accurate technical guidance can be provided for the large-scale use of pesticides in large fields.

Description

technical field [0001] The invention belongs to the technical field of measuring the toxicity of pests; in particular, it belongs to the technical field of a method for measuring the toxicity of whitefly pests by using living plants. Background technique [0002] Whitefly pests are a kind of pests that are often encountered in agricultural production, and whitefly is a very characteristic representative species of this kind of pests. Bemisia tabaci (Gennadius) belongs to Hemiptera (Hemiptera) Aleyrodidae. It is a kind of highly omnivorous insect. It was first discovered by Gennadius on tobacco in Greece in 1889. Bemisia tabaci is a complex of several cryptic species, and 15 cryptic species including 13 native species and 2 global invasive species have been reported in my country. As an important economic pest, Bemisia tabaci is one of the main pests of tropical and subtropical protected areas and field crops. It is very easy to break out and cause disasters after invasion, ...

AI Technical Summary

Problems solved by technology

In 2003, the cryptic species of Bemisia tabaci MEAM1 (type Q bemisia) was discovered for the first time to invade my country, and the damage of type Q bemisia gradually increased in some countries and regions. Bemisia farina has become the main endangered species, and it is spreading further, causing more serious losses

Due to the small body of Bemisia tabaci, experimental errors are prone to occur in the measurement process

The current indoor virulence research of Bemisia tabaci mainly uses the agar moisturizing leaf soaking method, but this operation is cumbersome and requires a lot of experimental materials. The general measurement cycle is 48 hours, which consumes a lot of time and money. More labor, and the leaves are easy to wilt and die after being picked from the plant, the survival rate of whitefly on the dead leaves will be greatly reduced, and the chemical composition of the dead plant tissue will change after death. The impact on the experiment will cause a large experimental error

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