Rational use of several chemicals

1. Acaricide : It is a medicine specially used to control herbivorous mites. It is only effective for mites and not for pests. There are three kinds of leaf mites, such as cinnabar leafhopper, truncate leaf mites, and two-spotted spider mites, which are mainly harmful to melons, solanaceous fruits, beans and other vegetables; Bean leaf mites mainly harm beans; Leaf mites mainly endanger eggplant, pepper, beans, loofah, etc.; more glutinous rice glutinous rice glutinous rice glutinous rice glutinous rice glutinous rice glutinous rice glutinous rice glutinous rice glutinous rice glutinous rice glutinous rice glutinous rice glutinous rice glutinous rice glutinous rice glutinous rice Types, potatoes, eggplants, radishes, etc.; tomato mites mainly harm the solanaceous vegetables; thorns and roots are mainly harmful to leeks, sassafras, onions, lilies, etc.; squash and solanaceous vegetables . Both Cheng and Ruo can cause damage, mostly in the back (lower), young shoots, young leaves, young fruits, flowers or roots of plants. The leaves of the damaged plants are yellow-white spots, which are detached or the leaves are curled to the back (easy to be mistaken for viral diseases), or fallen flowers, fruit cracking (eggplant), and even the plants die.

(1) Liuyangmycin acaricide: an antibiotic acaricide, the active ingredient is Liuyangmycin. It is stable at room temperature and unstable to ultraviolet light in the range of pH 2~13. It is low-toxic to humans and animals, has a contact-killing effect on cockroaches, and has an inhibitory effect on cockroaches. The effective period is 7 to 14 days. The main dosage form is 10% emulsifiable concentrate. When spraying, 10% emulsifiable concentrate is diluted to 1000-1500 times. Use 600~900 ml of emulsifiable concentrate to control capsicum sputum per hectare, and use 750~1500 ml of emulsifiable concentrate to control red spiders such as kidney beans and eggplant. Note: This product has mild phytotoxicity to cruciferous vegetables and should be used with caution; it can be used to control the mites on bee stings and mulberry trees, but can not use compounding agents; can be combined with various organophosphorus and carbamate Mix pesticides, but use them first. The liquid should be used now.

(2) Flumethmethrin acaricide: This product belongs to pyrethroid acaricide and insecticide . The active ingredient is flumethrin, which is stable in acidity, low in toxicity to humans and animals, highly toxic to fish, and has a contact-killing effect on cockroaches. It is highly effective against cockroaches and has a fast knockdown speed of more than 20 days. The main dosage form is 2% emulsifiable concentrate. It can be sprayed with 2% emulsifiable concentrate and water for 1000~1500 times to control the mites on the eggplant (red spider). It also has good control effect on many locusts, thrips, leaf miner, leaf roller moth, small green leaf carp and hibiscus. . It has a compounding agent with acetylene (Twee 41.5% emulsifiable concentrate).

(3) 哒螨灵杀杀剂: The characteristics of this product are stable at pH value of 4~9, low toxicity to humans and animals, slight irritating to eyes, poisonous to bees, silkworms, moderately toxic to fish, It has a contact-killing effect and is effective for both Cheng, Ruo and egg. It has good quick-acting effect and lasts for 30~40 days. The efficacy is not affected by temperature, and it has no exchange resistance with conventional acaricides such as phenbutyltin and thiabendone. Method of use, when spraying, 15% emulsifiable concentrate is diluted with water, and 1500 times solution is used to control the leaves of A. striata, Turkic leaf mites, Bean leaf hoppers, and Physalis pubescens; and 2500 times liquid is used to control the truncated leaves.螨; use 3000 times liquid to prevent side polyphagia sputum (tea sputum). Matters needing attention: 3 days before the harvest of vegetables; can not be mixed with alkaline pesticides, use the agent up to 2 times in 1 year; can treat aphids, whitefly, thrips, etc.; other products of this agent are called anthrone , 螨 螨 哒螨 哒螨 哒螨 哒螨 哒螨 螨 螨 螨 螨 螨 螨 螨 螨 螨 螨 螨 螨 螨 。 。 。 。 。 。 。 。

(4) Triazole tin acaricide: its active ingredient is triazole tin, which is easy to decompose in dilute acid and stable to light and rain. It is moderately toxic to humans, animals, poultry and birds. It is less toxic to bees, highly toxic to fish, has a contact-killing effect on cockroaches, and has a toxic effect on adult mites, nymphs and summer eggs. Resistant mites also have good control. Usage: Spray 25% wettable powder 1000 times solution to control the mites on eggplant and legume vegetables; or use 20% suspension agent 2000~2500 times solution to spray tea sassafras (side sputum sputum) . This agent should be discontinued 15 days before harvest; it should not be mixed with alkaline substances, and it can be mixed with various insecticides or fungicides , but it should be used alternately.

(5) acetylene agicide: also known as Kruth, propargene, Ogilvy, sputum and so on. It is an organic sulfur acaricide. Its active ingredient is acetylene, which is not suitable for mixing with strong acid or alkali. It is flammable. It is low in toxicity to humans and animals, slightly irritating to the skin, safe for birds, bees and natural enemies, poisonous to fish, stomach poisoning and contact killing effect, and poor egg killing effect, with a shelf life of 14 to 30 days. Usage: Dilute 73% emulsifiable concentrate with water, use 1000 times liquid to prevent and control the side polyphagous mites (Te scutellaria), Shenze's leaf mites, Turkestan leaf mites, etc., and use 1000~2000 times liquid to control T. , two-spotted spider mites, etc., with 3000 times liquid to control mites (red spiders) on vegetables such as beans, melons, and solanaceous fruits. Note: 7 days before the harvest of vegetables; the application of the drug above 20 °C, the efficacy can be improved; but the temperature is below 20 ° C, the efficacy decreases with the temperature; this product can not be mixed with pesticides; for melon seedlings When the plant height of the bean seedlings is less than 25 cm, the dilution ratio of the 73% emulsifiable concentrate is not less than 3000 times (the concentration is lowered).

(6) phenyl butyl tin acaricide: This product is stable to light, heat, acid, oxygen, etc., low toxicity to humans and animals, irritating to eyes, skin and respiratory tract, low toxicity to birds and bees, and influence on natural enemies Small, highly toxic to fish, has a contact-killing effect on cockroaches, and has a strong lethal effect on cockroaches and cockroaches. It took effect 3 days after application, reached the peak on the 14th day, and had resistance to organophosphorus and organochlorine pesticides , and had no cross-resistance with this agent. Usage: When spraying, 50% wettable powder is diluted with water, 1000~1500 times liquid is used to control the leaf mites of pepper, cucumber, beans and other vegetables, and 1500 times liquid is used to control the leaves of A. sinensis and Turkestan. Note: Read the label carefully before use; stop using the tomato 10 days before harvest; the temperature is above 22 °C, the effect is improved, the effect is lower than 15 °C; the agent has other names such as Thor Ke, fenbuxene, decane tin, bismuth tin, ruthenium tin, etc., and with lingzhi (10% benzene · 哒 emulsifiable concentrate), sulfur (50% phenyl butyl sulphur suspension), etc. .

(7) Thiacridone acaricide: The drug is low in toxicity to humans and animals, mildly irritating to the eyes, low in toxicity to birds, non-toxic to bees under constants, and has little effect on natural enemies. class