Tea-tsai, prevention and control of new pesticides - tea worm virus preparation
In recent days, tea has gradually begun to harm the tea tree. Tea-footworm is one of the major pests in tea gardens in our county. If it is not controlled in time, all the old tea leaves will be consumed. After the experiment, the tea locust virus preparation has a good control effect on the tea worm. The main ingredient of the tea locust virus preparation is the nuclear polyhedrosis virus, which is a biological pesticide and has special effects on tea worms, and is non-toxic to humans and animals. The virus preparation has a stomach poisoning effect. After the tea worm larvae feed, the virus enters the body through the mouth and proliferates in the nucleus of the insect pests, and then continuously infects the healthy cells until the whole worm body disintegrates and dies. The virus in insect feces and worm corpses can spread and spread through wind and rain, natural enemies, and has a strong aftereffect. Generally, once a year, it can control the occurrence of tea-tanning in the whole year.
Control methods: When tea larvae larvae are 1-2 years old (about 0.5 cm long), 150 ml of tea locust virus preparation is used per acre, diluted and controlled 500 times. For example, tea locust larvae reach the age of 3 (about 1 cm long), tea locust virus preparation 500 times liquid + 0.6% matrine 750 times, and the amount of mu 150 ml + 100 ml for prevention and treatment.
Prevention precautions:
First, it must be controlled when the tea larvae larvae are 1-2 years old, because larval stage control effect is good, such as tea locust larvae after 3 years of age and then control, the effect is poor.
Second, when used, it is necessary to fully shake the original solution and then dilute, and the diluent should also be fully shaken.
Third, the virus preparation is not resistant to high temperatures and fear of sunlight, so it is necessary to control it in the evening or on cloudy days, and it is necessary to re-prevent the rain after 6 hours after spraying.
Fourth, it is necessary to increase the amount of liquid to be used.
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