An Efficient and Accurate Insect-Catching Method for Investigating Field Thrips Population Density

Abstract

The invention discloses an insect catching method for efficiently and accurately investigating field thrip population density. The insect catching method comprises the following steps: randomly selecting 5 investigating points in a field region and selecting 3 to 5 types of thrip host plants from each investigating point; spraying a thrip anaesthesia drug on 20 to 30 plants of each type of the thrip host plants, wherein the spraying time is 11:00 to 13:00 of sunny days; 0.5h to 1.5h after spraying the drug, catching insects; counting the sum of the quantity of thrips on each type of plants in the field region and taking the sum as the thrip population density in the field region. The method disclosed by the invention can be used for accurately investigating a real condition of the field thrips and has the advantage of simplicity in operation.

Description

technical field [0001] The invention belongs to the technical field of agricultural pest control, and in particular relates to an efficient and accurate insect-catching method for investigating the population density of thrips in the field. Background technique [0002] Western flower thrips, palmi thrips, tobacco thrips and flower thrips are important pests on horticultural and vegetable crops. They are widely distributed and cause serious damage, especially the tomato spotted wilt virus they spread, which causes serious losses to agricultural production. . Therefore, only by quickly and accurately understanding the population density and occurrence dynamics of thrips in the field can effective control measures be taken in time. However, due to the small size of thrips, their hidden activities, and their rapid dispersal when disturbed, it is extremely difficult to investigate their population density in the field. The usual way to investigate the population density of thr...

AI Technical Summary

Problems solved by technology

However, due to the small size of thrips, their activities are hidden, and they fly away quickly when there is disturbance, which brings great difficulties to the field investigation of their population density.

The usual way to investigate the population density of thrips in the field is to hang sticky boards in the field, and the thrips will fly when they touch the sticky boards and be stuck, and then the staff will wait for a certain period of time to count the number regularly. However, this method has randomness If the problem is too strong and is greatly affected by the wind direction, the survey results have large errors, and sometimes the survey results are more than double the actual number, and this method needs to wait for a certain period of time, and the data cannot be obtained in time

Images