In the long-term evolution of insects, insects have a tendency to color, which is a tendency response induced by light-sensitive cells in the visual organs of the visual organs, also known as "color perception", which is essentially a Phototaxis. The insect's induction of light is mostly short-wavelength near the center of the broad spectrum of the electromagnetic wave, and the wavelength is 253-700 (nanometer), which is equivalent to the area of ​​the ultraviolet light to the infrared light inside the spectrum, that is, they can recognize Color, you can also see short light waves that the human eye can't directly see. The tendency of insects to color is divided into positive and negative, and the trend toward color is positive color, avoiding color as negative color. Various insects have specific choices and preferences for color tropism, and can vary from gender to gender.
Different types of insects have different colorimetric properties. In agricultural production practice, plant protection researchers use the colorimetric properties of insects to make colored sticky board to trap pests that harm crops. Insects such as locusts, whiteflies, spider mites, and leaf miners have strong chemotility to yellow and are made into yellow sticky worms; thrips have strong tropism against blue and are made into blue worms. , trapping "hose" flying insects or some crawling "lust" insects, this is what we usually call the yellow and blue board "color lure" technology. In addition, according to the negative tendency of aphids to silver ash and other colors, silver-gray plastic film, aluminum foil, black plastic film or spray white powder emulsion to cotton can be used to avoid the cockroach. The "color lure" technology of the sticky insect board is one of the green prevention and control technologies promoted by the agricultural sector in recent years.
First, the sticky insect board "color lure" pest species Yunfei sticky insect board divided into yellow, green, red, blue, white, black, purple, blue, pink, gray ten colors 1, open and ready to use, easy to use 2, special chromatography , double-sided trapping, the control effect is remarkable. 3, specific plate quality, flat without curling, waterproof and high viscosity glue, anti-sun, rain-resistant, high temperature is not aging, durable. In the environment of temperature 10 ° C - 70 ° C, the substrate is not obviously deformed, the colloid is not fluidized, and it does not dissolve in water. In use, the color is the same, and there is no obvious color difference between the glossy surface and the backlight surface under strong sunlight. Sticky board material: PP material, with certain strength, hardness, moisture resistance, double-sided adhesive coating, non-curling surface, non-toxic and environmentally friendly, affordable and durable.
The pests of the wormwood are mainly small insects such as the order Hida, Diptera, and Thysanoptera, and there are few insects such as Hemiptera, Coleoptera, and Hymenoptera. According to different crops, the following classifications are made:
Vegetables: Homoptera, whitefly, aphids, spider mites, planthoppers, etc.; Diptera, fruit flies, fruit flies, parasitic flies, various mosquitoes, chironomids, etc.; Moths; Coleoptera target beetles (Huangqu stripe); bee-winged bees, lepidoptera, small moths, etc., 7 orders, 28 families, dozens of small adults.
Vegetable garden horses trap the vegetable base Plutella xylostella to trap tea: Homoptera tea small green leafhopper, black thorn powder mites, mites, etc., Thysanoptera
Tea plantation black thorn cockroach attracts fruit trees: 20 species of 20 small insects such as Homoptera, Diptera, Hymenoptera, Coleoptera, Lepidoptera. (Flies, sucking fruit moths, pear stem bees, stalks, etc.)
Orchard fruit flies attract other: the common pests of flowers, edible fungi, thrips, aphids, whiteflies, mushroom mosquitoes, mushroom flies and other trapping effects are significant.
In addition, color traps are combined with lights, frequency vibration waves, sexual attractants, attractants, insecticides, etc. to make instruments, utensils, paints, etc. to expand and enhance the range and effect of attractants. For example, the placement of Plutella xylostella on the yellow plate can induce the adult Plutella xylostella, and the white sticky worm plate with the sexual attractant can trap adult adults such as the adult male worm, the male adult worm, and other insects. It can control pests such as cockroaches and flies. In addition, special sticky board can also be used for certain pests.
Second, the use of technical points A large number of practices have proved that the swatch trap has the advantages of simple operation method, obvious control effect, safety and environmental protection, less damage to natural enemies, and is one of the first measures to develop ecological agriculture to control pests. In order to improve the actual application effect, pay attention to the following technical points during resettlement:
1. The suspension time should be appropriate. When pests are controlled, they are hung in the early stage of pests, and the insects can be hung throughout the growing season.
2. The suspension height should be correct. The height of the wormwood board is related to the mating behavior of the insects, the flight behavior, the habit of finding the host plant, the developmental characteristics of the plant, and the meteorological factors. Most studies have shown that the height of the organ board should be flush with the top of the plant or slightly higher than the height of the plant (10-20 cm). During the growth of the plant, the height of the worm plate is constantly adjusted with the growth of the plant.
3. Suspension direction. The direction in which the slabs are placed vertically is generally divided into two types, which are parallel to the row direction of the plant and perpendicular to the row direction of the plant. It is recommended to use the east-west direction, the spacing between the boards is 6-8m (adjusted according to the actual situation), of course, the convenience of farming operations should also be considered in the actual process.
4. The number of suspensions should be sufficient. At the beginning, a small amount of sticky insect boards can be hung to monitor the density of the insects. When the amount of insects on the board is increased, the number of sticks is increased.
5. Pay attention to maintenance. After using the insect board for a period of time, it will stick to pests and dust, make the effect of the armyworm worse, and even lose the ability of the armyworm. It should be replaced or glued in time. The used sticky board should be recycled after centralized treatment.
6. The use of sticky board can effectively reduce the number of medications, but in order to improve the overall control effect, it is also necessary to effectively combine other prevention measures.
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