Biological control technology for pests and diseases in tea gardens

Protect and utilize natural enemy insects such as grasshoppers, ladybugs and parasitic wasps in local tea gardens, as well as beneficial organisms such as spiders, predators, frogs, lizards and birds, to reduce the damage of human factors to natural enemies. Conditional use of biologically derived pesticides, such as microbial pesticides, botanical pesticides and animal-derived pesticides. (1) Insect pest control. That is, a method of controlling pests by using natural enemy insects or predatory spiders and mites. Common parasitic insects such as parasitic wasps and parasitic flies, predatory insects such as ladybugs, grasshoppers and predatory blind mites, predatory mites, predatory spiders such as twill cats, small black spiders, labyrinth funnels Spiders, etc., play an important role in the control of small green leaf mites, tea mites, leaf roller moths and other pests. (2) Treating insects with bacteria. That is, a method for controlling pests and diseases using beneficial bacteria, fungi and their metabolites. For example, Bt preparation (Bacillus thuringiensis) has good control effect on tea caterpillar, moth, and tea silkworm, but it is highly toxic to silkworm, and should be avoided in mulberry and tea mixed areas. Beauveria bassiana has a good effect on the control of tea stalks, tea caterpillars, oil worms, tea leaf curlers, tea silkworms, etc., and the genus Corydalis can control black thorns and so on. (3) Treating insects with viruses. For example, the tea scorpion nucleus polyhedrosis virus preparation has been applied in production. The virus has a long-lasting effect, is environmentally safe and is afraid of ultraviolet radiation. The virus loses its vitality under the sun, so it must be used on a cloudy day.