The occurrence of small and medium-sized pests (such as whiteflies, thrips, etc.) in greenhouse vegetable production is becoming more and more serious. Thrips infested with adult shoots, nymphs, young leaves, flowers, and fruit juices caused damage. The chlorosis point may result in serious damage to the floral organs and dry leaves. The damaged leaves of the new shoots may not be able to stretch because of the curling of the leaf margins. The veins are yellowish-green and the yellow and green spots appear in the leaves. They may appear like mosaics. In the end, the damaged leaves turn yellow, become brittle, and easily fall off; the top shoots of new shoots suffer damage, the growth points are inhibited, and the branches and leaves cluster or the top buds shrink. It has had a greater impact on the efficient production of greenhouse crops. Especially in the production of eggplant, pepper and melon vegetables, hummer is relatively common, and it is difficult to eliminate it once it has occurred. The control effect after spraying is not obvious, and it has become a kind of pest for vegetable farmers. In order to achieve the purpose of drug-to-insect killing, vegetable growers always arbitrarily increase the amount of medication, making the resistance of pests greatly enhanced, and sometimes vegetables have appeared phytotoxicity and did not treat the pests. According to many years of experience, the author believes that improving the control effect of the hummer should proceed from the following aspects:
Strictly prevent the continuous cycle hazards of thrips: Do a good job of exterminating the sheds before planting, and prevent seedlings and artificially introduced thrips.
Trapping using the armyworm board: Thrips have a strong tendency towards blue color. 30 to 35 blocks of 20 cm and 30 cm of blue armyworm board can be set per acre in the greenhouse near the ground, and at the same time every 7 to 10 days it is necessary to clear the thrips on the army board and make up the oil.
According to the habits of thrips, medication: Thrips breed quickly. Its 1 to 2 years of age are harmful to the above ground, and after 2 instars, the soil enters the pupae and its feathers become adults. In the field, the formation of different insect states, azimuth, etc., the development of the ecological potential, increasing the hidden nature of its occurrence, resulting in the difficulty of drug prevention and control. Therefore, it must be carried out both on the ground and at the same time during the prevention and control. When the thrips occur, they can be combined with water-flood pesticides to kill thrips. To destroy underground nymphs and centipedes.
Select the right part of the application: According to the aggregating characteristics of the hummer, the banma sunny days like to hide in the flowers of the vegetables, resulting in more difficult to control. The key parts of the spray are flowers, leaves, and growth points.
Scientific Alternate Use of Drugs: Discovery of Throat Horses to Be Controlled by Early Adoption of Systemic Insecticides Commonly used drugs are acetamiprid, thiamethoxam, nitenpyram, imidacloprid, avermectin, bifenthrin, etc., using the morning or evening when the lame and more dorsal leaves when the spray, spraying every 7 to 10 days . To delay the development of drug resistance, each drug can not exceed two consecutive times. It is strictly forbidden to use vegetables to disable the production of pesticides to ensure the safety of vegetables.
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