The choice of biological pesticides should be targeted
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1, rotenone, also known as Shi Lubao. It is mainly based on contact and stomach toxicity, and has certain repellent effect. It is safe for natural enemies and has a wide spectrum of insecticides. It has good control effects on various fruit tree pests such as Lepidoptera, Hemiptera and Coleoptera. For example, aphids can be sprayed with 2.5% rotenone emulsifiable concentrate 400-600 times.
2, avermectin, also known as Qiqisu, Ai Fuding, harmless, farmhouse, avermectin, ciguacin, abadin, Longweikang and so on. It is a brand-new antibiotic biological killing insecticide, which has contact and stomach poisoning effects on pests and pests, and has a wide spectrum of insecticides. Can be used to control pear hibiscus, apple leaf mites, peach small heartworm. For example, the control of fruit tree red spider can be sprayed with 1.8% avermectin EC 4500-5000 times.
3, tebufenap, also known as rice bran. After the larvae are fed, they are molted when they are not molting, and the larvae are dehydrated and starved to death due to incomplete molting. It is used to control P. sinensis, apple leaf roller moth, grape leaf roller moth, pine caterpillar, American white moth and so on.
4, Wuda Oasis No. 1 is a virus insecticide, the virus directly acts on the fat body cells of the insect larvae and the nucleus of the midgut, and rapidly replicated to cause larvae to die of disease. It can be used to control lepidopteran pests, pears and heartworms. For example, to control the drill-bit pests such as the pear heartworm, it is best to use the drug at the peak of the eggs.
5. Yanbaisu is an insecticide mixed with three components such as nicotine, hexaphylline and alizarin. It has strong contact and stomach toxicity and can be used to control Lepidoptera, Diptera, and Homoptera. And a variety of pests such as Hemiptera. Such as aphids, red spiders, scale insects, etc., generally use 1.1% Yanbaisu emulsifiable concentrate 1000 times, once every 7 to 10 days, even spray 2 to 3 times.
6. Saponin Nicotine A broad-spectrum insecticide made from saponin and nicotine, which is resistant to rain. It can be used to control citrus red spiders and scale insects. For example, in the early stage of egg hatching, spray with 27% saponin nicotine 300 times solution, once every 5 to 7 days, and spray 2 to 3 times.
7. Chitin The series of products are like a strong product. After spraying, a film is formed on the surface of the plant to prevent the invasion of germs. Generally 2% - Shi Zhuang 600 ~ 800 times liquid, sprayed during flowering to fruit formation; Poly candy, applied in the fruit period, protects the fruit from the invasion of bacteria and enhances the sugar content. Generally, it is sprayed in the fruiting stage with 1.5% poly candy water agent 600 times liquid, once every 6 to 7 days, and even sprayed 2 to 4 times; Black Star 21 has induced resistance, inhibits bacterial infection, improves fruit quality, etc. Function, can be used to control fruit tree scab and so on. Generally, it is sprayed with 400% to 600 times of 2% black star 21 water agent.
8. Amishida The bactericidal mechanism is to inhibit the mitochondrial respiration of the pathogen cells and destroy the energy synthesis of the bacteria to cause death. It can be used to control pear scab, black spot, round rot, peach brown rot, walnut black spot, grape downy mildew, powdery mildew, smoke pollution and so on. For example, in the prevention and treatment of pear scab, it is usually sprayed with 25% Amishida 500-800 times.
9, polyoxygenate, also known as Bao Li'an, Dox's bacteria, polyoxomycin, pluriticmycin, polychlorin, ketomycin, Xingnong 606 and so on. It is a broad-spectrum nucleoside agricultural antibiotic. It can be used to control pear black spot, round disease, grape black pox disease, gray mold, powdery mildew, apple spotted leaf disease, mildew disease, round disease, and strawberry gray mold, powdery mildew and the like. Such as the prevention and treatment of grape black pox disease, using 3% polyoxygen 600 ~ 900 times liquid, once every 7 days, even spray 12 times.
10, Kejing Kang Also known as mesomycin. It has high activity against bacterial diseases and some fungal diseases of crops. It can be used to control grape anthracnose, black pox, apple ring disease, anthracnose, spotted leaf disease, mildew disease and so on. For example, in the prevention and treatment of grape anthracnose, it can be sprayed with 3% Kecocon 1000-1200 times in the early stage of the disease, and used for 3 to 4 times.
11, root Fu Te also known as root rot 110. It can be used to control root rot of fruit trees, and can activate roots and roots to promote root development. The transplanting period is to use 2.5% roots of 800 times liquid, 500 to 600 times of plant growth period, and 200 to 300 ml per plant.