Now everyone's office or home is inseparable from tea. In order to ensure that everyone has fresh and healthy tea, many tea farmers use bio-pesticide as much as possible. How is bio-pesticide used on tea? Pesticide Xiaobian has compiled a common method of using several biological pesticides on tea: Matrine : also known as oxymatrine, is an alkaloid preparation prepared by extracting the roots of Chinese herbal medicine Sophora flavescens and fruit with an organic solvent such as ethanol. It is easily degraded in the environment and has almost no residue. Control tea black moth, tea caterpillar, in the 1st, 2nd instar larval stage, or egg hatching peak, use 0.2% matrine AS50~75mL per 667m2, add water 50~75L, dilute to 1000~1500 times liquid spray. It can be used in the prevention and control of tea stalks in organic tea gardens. Before the 3rd instar larvae, use 3.2% insecticide net EC (matrine alcohol, cypermethrin mixture) 40~50mL per 667m2, add water 75kg, dilute to 1500~2000 times liquid spray, apply In low residual tea gardens and green food tea gardens. The organic tea garden can be sprayed with 800~1000 times of pure matrine preparation without chemical pesticides . The efficacy of matrine is slow and should be administered 3 to 5 days in advance. Rotenone: Also known as roten, it is a plant-derived insecticide with a long history of application. It is easy to decompose in the air, low in residual toxicity and environmentally friendly. It has contact and stomach toxicity to pests. It has a wide spectrum of insecticides and a short duration of action, generally 5 to 6 days, and only 2 to 3 days in summer daylight. It can be used for the production of A-grade green tea, and it can be used to control tea mites, tea caterpillars, tea silkworms, leaf moths, moths, hawk moths, small green leaf mites, black thorn mites, and samovar, with 2.5% rotenone EC150~250mL per 667m2. Dilute with water to 300~500 times liquid spray. This pesticide cannot be mixed with alkaline pesticides. Rotenone is highly toxic to fish and should be used to prevent contamination of fish ponds. Bacillus thuringiensis: The pest is mainly a stomach poison. After feeding through the insect into the digestive tract, it produces parasporal crystals (endotoxin) and exotoxin. The spore crystal is the main toxin. It usually takes 2~5 days after application to be effective. It has a good control effect on lepidopteran larvae such as tea caterpillars. Control lepidopteran larvae such as tea caterpillars, tea black moths, tea thorn moths, and use 10 billion live spores/g Bacillus thuringiensis WP or 10 billion spores/mL BtEC 75-150 g per 667 m2 in the 1st or 2nd instar larval stage. Dilute with water to 500~1000 times liquid spray. Suitable for use in organic tea gardens. Beauveria bassiana: Beauveria bassiana is a fungal insecticide. The insecticidal action is by spore contact with the worm, under suitable conditions (temperature 24 ° C ~ 28 ° C, relative humidity 90% ~ 95%, neutral or slightly acidic) Under the germination, infestation of the body, mass reproduction, secretion of toxins, affecting the blood circulation of pests, interfere with the metabolism of pests, 3 to 7 days after the death of the body, the body is covered with white hairy hyphae, also known as 'white zombie'. The tea leaf curler, tea caterpillar, and small green leaf mites are used in the early stage of the first and second instar larvae, and 0.5 to 7 billion spores/g of powder 0.5kg per 667m2, 50L of water, spray; Lily weevil, in the peak period of cockroaches, each 667m2 of Beauveria bassiana per gram of spores 5 to 7 billion bacteria powder 1~2kg, mixed into fine soil, applied to the tea tree rhizosphere soil Or in the peak period of adult worms, after the bacteria powder is diluted with water, the leaves are sprayed on cloudy days, rainy days or in the morning and evening when the humidity is high. Nuclear polyhedrosis virus pesticide: It is a kind of virus insecticide. The nuclear polyhedrosis virus has a cell-free structure and can only replicate and proliferate in the host to form a protein-like polygonal body. Insects are infected by mouth or wound. The virus enters the worm and is digested by gastric juice. The baculovirus particles are released, enter the body cavity through the intestinal epithelial cells, invade blood cells, fat and body cells, etc., and are embedded in the crystalline protein to form a multi-angle. Body, proliferate in the nucleus, and then infect healthy cells until the insects purgate and die. After the rupture of the diseased faeces and the corpse of the corpse, the polyhedron is released and spread widely by wind, rain, insects and birds, making the virus disease prevalent in the pest population. Mainly parasitic on Lepidoptera larvae. The nuclear polyhedrosis virus is slow in efficacy, but has a long-lasting effect of more than 2 years. In the first, fifth and sixth generation 1st and 2nd instar larvae, when the insect population density is lower than the control index, 1 to 2 billion PIB (protein crystalline polyhedrosis virus) tea scorpion nucleus polyhedron is used per 667m2. Virus AS50mL, spray 1000 times water. When the density of insects exceeds the control index, 50 mL of tea prion and chemical pesticides (such as phoxim WP synergistic type) can be used, and 1000 times of water can be sprayed; tea caterpillars can be used to control tea caterpillars at the age of 1 and 2 larvae, 10~ for every 667 m2 2 billion PIB tea caterpillar nuclear polyhedrosis virus AS50mL, plus water 1000 times spray. Or use 25~30 worms per 667m2, mash and spray on water.
Our automatic door kits include 1 motor+gear reducer, 1 belt,7 meter, 1 idle pulley, Microprocessor, 4 sets of carriage blue wheels, 2 sets of floor guides,2pcs remote control, 2 sets belt clamp mounting brackets, 1 power supply harness and cable connectors, 2 locator, Aluminum track whose length is 2.08 meter, 3 meter, or 4 meter.
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