We should pay attention to the use of specific pesticides.

Generally speaking, the insecticidal active components of specific insecticides are different, each has its own characteristics, and it has different insecticidal mechanisms (that is, the principle of pesticides killing pests). Now the varieties often used in production are: acetamiprion, buprofezin, flufenuron, diflubenzuron, diflubenzuron, insecticidal, monosulfonate, imidacloprid, Regent, thiazox, pyridaben and so on. In order to give full play to the insecticidal effect and use effect of the specific insecticide, we must start with understanding the characteristics of the drug, mastering its correct use method and clarifying the matters needing attention, especially when it comes to some key technical links, we must strictly check the gate in order to achieve the desired effect. Acetamiprion (also known as fluvoflubenzuron, acetamiprion, flubenzuron, Yitaibao): it is a kind of insecticide with high insecticidal activity and low toxicity to human and animals. hinder the normal growth and development of pests, mainly so that pests can not peel and die. The insecticidal spectrum is wide and the insecticidal activity is high, but the insecticidal effect is very slow. it takes 3 days to show the efficacy after spraying, and the efficacy lasts for more than half a month after 5 days. It has little effect on crop safety, natural enemies and other beneficial organisms, and has obvious effect on pyrethroid and organophosphorus pests, but has no effect on red spiders. It has no effect on aphids, leafhoppers, planthoppers and other piercing mouthparts pests. It is mainly stomach toxicity, which can only play a role after the pests feed into the body, and there is no insecticidal effect such as internal suction, fumigation and so on. Usage: to control Helicoverpa armigera and red bollworm during the peak egg incubation period and before the first instar larvae drill, spray water with 60100ml of 5% EC per 667m2; spray 2000-4000 times of liquid to control leaf borer and bridge insects at 1st and 2nd instar; vegetable pests such as Plutella xylostella, cabbage moth, Spod moth, Spodoptera litura, bean pod borer, etc., spray 1000-2000 times with 5% EC Peach heart borer, citrus leaf moth, pear star caterpillar, leaf curler, poisonous moth, etc., were sprayed with 1000-2000 times of 5% EC, and 1000-2000 times of 5% EC were used to control tobacco green insects from the peak egg hatching period to the early larval stage. In addition, it should be noted that the drug has long-term toxicity to silkworms and should not be used in mulberry fields. Buprofezin: also known as Yadele, Propofol, Daolaojing, Yuluode, is a kind of insecticide with special effect on planthoppers and low toxicity to human and animals. it has contact and stomach toxicity, no internal inhalation and fumigation, and has high insecticidal activity. but the insecticidal speed is slow, it is generally effective in 3-5 days, and the efficacy period is about 30 days. The drug has a special effect on nymphs and is safe for natural enemies and beneficial insects. To control rice brown planthopper, white-backed planthopper, gray planthopper and black-tailed leafhopper, spray 20-30 grams of 25% wettable powder on water during the peak period of nymphs; vegetable whitefly, 25-30 grams of 25% wettable powder per 667 square meters (note: this agent can only be used for spray, not as soil treatment agent). Flufenuron: also known as Carbendazuron, is a low-toxic and selective insecticide. the mechanism of killing pests is to prevent pests from molting, so that pests can not grow and develop normally and die, killing nymphs well and ineffective to adults. It has contact and stomach poison insecticidal effects, no internal absorption and fumigation, and is safe for crops, natural enemies and other beneficial insects. Usage: control cotton pests, cotton bollworm and red bollworm, spray 70-100 ml 5% EC every 667 square meters, spray water, build bridge worms, leaf rollers, lamp moths, spider moths, etc. are in the peak period of 1-2 instar larvae, use 30-50 ml 5% EC every 667 square meters, cotton red spiders use 60-90 ml per 667 square meters, spray water. Vegetable pests, Spodoptera litura, cabbage armyworm and other pests, during the peak period of 2nd instar larvae and 1st-2nd instar of Plutella xylostella, 50-60 ml of 50% EC is used every 667m2. Mites such as eggplant red spider, bean red spider and other mites should be sprayed with 40-60ml of water every 667m2 before and after flowering. Apple leaf mites spray 1000-1500 times of 5% EC before and after flowering. 1000-2000 times liquid spray can be used for apple leaf roll moth, citrus red spider, wood louse, peach heart borer, citrus leaf miner, etc. (note: the drug can not be mixed with alkaline substances and can not be used in mulberry orchards and silkworm farms). Diflubenzuron: a selective and low-toxic insecticide, its action mechanism is the same as acetaminophen, the insecticidal speed is slow, the efficacy period is 15-20 days, it is resistant to Rain Water erosion, it is safe for beneficial insects, and its outstanding feature is that it is effective against many kinds of pests. It is ineffective against aphids, leafhoppers and planthoppers. To control crop pests such as armyworm in dry fields, 100-150 milliliters of 25% suspension agent should be used every 667 square meters during the peak period of 2nd instar larvae, and water spray should be applied to cotton bollworm, red bollworm, corn borer and other pests during the peak period of egg hatching or early instar larvae. 100-150 ml of 25% suspending agent was used to spray water every 667 square meters, bridge insects, cotton leaf rollers, lamp moths, etc., and 75-100 milliliters were sprayed on water every 667 square meters during the peak period of 2nd instar larvae. Pests such as Pieris rapae, Spodoptera litura, Spodoptera litura and Spodoptera exigua should use 25% suspension agent 50-100 ml for every 667 square meters, and Plutella xylostella should spray water with 25% suspension agent 100-150 ml for every 667 square meters. Apple small leaf roll moth, citrus leaf roll moth, pear star caterpillar, boat caterpillar, diamondback moth, poisonous moth and other pests can be sprayed with 1000-2000 times of suspension. The tobacco green worm sprays water with 100-150 ml of 25% suspension agent during the egg hatching period or the first instar larva peak stage (note: this product can not be mixed with alkaline substances and is prohibited in mulberry gardens and silkworm farms). Shachongshuang: according to the structure of Bombyx mori toxin, the bionic synthetic insecticide has strong contact and stomach toxicity, and has a certain fumigation effect. it kills pests by making them lose response to external stimuli, fall into paralysis, paralysis, and eventually die. the most prominent feature is that it has a strong insecticidal effect, which can be absorbed by plant roots and leaves and transmitted in the plant to kill pests. Absorbed from the root of the plant, it can be distributed to the whole plant after one day, and the distribution is uniform, but the insecticidal speed is slow, generally effective in 3 days, and the period of validity is about 10 days. Shachongshuang has a good control effect on many kinds of rice pests. When Chilo suppressalis, Chilo suppressalis and Chilo suppressalis begin to appear withered heart seedlings and withered sheaths during the peak incubation period of stem borer eggs, they can also be sprayed with 25% water agent 150ml-200ml per 667m2 and can also be sprayed for more than 10 days, or with 3% granule directly with 1.5-2kg per 667m2. This method is convenient, rapid and valid for 12-15 days. In addition, Shachongshuang also has a good killing effect on the larvae that have been decayed into the rice stem. For the control of rice leaf roller, 200 milliliters of 25% water agent is used for every 667 square meters during the peak period of the 3rd instar larvae, and the effect is about 10 days. Shachongshuang also has killing effect on other pests such as thrips. For the control of Plutella xylostella and Pieris rapae, 200 milliliters of 25% water agent should be used every 667 square meters, and 200-250 milliliters of 25% water agent should be sprayed on water when the seedlings are killed. When the citrus leaf miner extracted 0.2-0.5cm from the new shoots, the citrus leaf miner was sprayed with 25% aqueous solution. Citrus sagittal scale, whitefly whitefly, pear star caterpillar and so on are sprayed with 25% water agent 500-700 times. Sugarcane borer and stem borer should use 25% water agent 250ml every 667square meters during the peak hatching period, spray on water, and can also control sugarcane thrips and other pests. Note: Shachongshuang is moderately toxic to humans and animals, and must be used strictly according to the regulations. Once poisoning occurs, such as headache, dizziness, abdominal pain, physical weakness, nausea and vomiting, drooling, sweating, pupil narrowing, etc., it is necessary to immediately lift away from the site of the application, remove the pollution, and send it to the hospital for emergency treatment in time. This product should pay attention to the use of cruciferous vegetables such as cabbage, cabbage and other cruciferous vegetables, beans and cotton at high temperature in summer; in order to improve its efficacy and improve its wettability, it is best to add 1% neutral detergent; when using Shachongshuang to control rice pests, the field should keep 3-5cm water layer for 2-3 days; it should not be mixed with alkaline substances. Insecticidal order: similar to Shachongshuang, it is a kind of insecticide of Bombyx mori venom, which has contact, stomach poison and internal sucking insecticidal effect on pests, and has a strong internal insecticidal effect. The insecticidal mechanism is to make the pests lose their response to external stimuli. Paralysis, paralysis, poisoning and death. Usage: to control rice stem borer, Chilo suppressalis and Chilo suppressalis, use 75-100 grams of 50% crystal for every 667 square meters of rice seedlings and 100-140 grams for rice heading stage. Sugarcane borer was applied to the root with 3.6% granule 4kg every 667m2. Soybean bean moth sprays water with 15-32 grams of 50% crystal per 667 square meters (see Shachongshuang for attention). Imidacloprid: also known as Kangfuduo, aphid lice net, lice aphid, Gao Qiao, Bidan. It is a selective and low toxic insecticide, which has a strong internal insecticidal effect and has a good effect on piercing mouth organ pests, but it has no effect on mites and nematodes, because it has a strong internal insecticidal effect, it can be directly used for soil treatment or seed treatment. its insecticidal mechanism is also acting on the nervous system of pests, causing pests to lose nerve conduction function, and finally killing pests, and has a good effect on the control of all kinds of rice planthoppers. The control strategy of radical cure of the first generation and control of the second generation should be adopted. the control should be carried out during the peak period of adult spread and the peak hatching period of the second and third generation nymphs, spraying water with 20% concentrated soluble 7-10mg per 667m2, or 50-100g of 10% wettable powder per 667m2. To control whitefly in greenhouse or open field, spray water with 15-30 ml of 20% concentrated solvent per 667 square meters during the rising period of nymph population, and spray 5-8 ml to control cabbage insect. Cotton pests are treated with 70% wet mixing agent for cotton seed treatment, because it has a strong internal absorption effect, which is absorbed by the root after seed dressing, which can control cotton aphids at seedling stage, 500,714g per 667m2, add 1.5-2L of water, mix into paste, mix 1000 grams of cotton seeds, and then sow them evenly. The control of pear planthopper should be sprayed with 20% concentrated solvent 2500-5000 times in egg stage and the first generation nymph stage; citrus leaf miner germination rate up to 25% in the field should be sprayed with 1000-2000 times solution; apple yellow aphid should be sprayed with 5000-6000 times liquid when the insect population rises. (note: this product is ineffective against mites, acaricides should be added when insects and mites occur at the same time; should not be sprayed in strong sunlight). Fipronil, also known as fipronil, is a broad-spectrum moderately toxic insecticide with strong insecticidal activity, low dosage, slow insecticidal speed, long efficacy period, contact and stomach toxicity, as well as certain internal insecticidal effect. its outstanding feature is that it can promote crop growth, increase crop yield, and be safe to natural enemies and beneficial insects. Control all kinds of rice planthoppers in the nymph stage, spray 30-60 ml of 5% suspension agent on water every 667 square meters, but to maintain a certain water layer in the rice field, borer and rice leaf borer, Chilo suppressalis medinalis are used in the period from egg hatching to young larvae, 30-55 ml of 5% suspension agent is used for every 667 square meters, and water spray is sprayed on water. The control of rice weevil should be about 5 days after transplanting, and 60-80 ml suspension agent 60-80 ml should be used for every 667 square meters. To control Plutella xylostella, it is necessary to use 18-30 ml of 5% suspending agent per 667 square meters during the peak period of larvae, spray on water, and have a good effect on Plutella xylostella which is resistant to pyrethroids and organophosphorus. Liriomyza huidobrensis was sprayed with 40-60 ml of 5% suspending agent every 667 square meters from the peak egg stage to the peak egg hatching period. Thiazox: synonym Nisolan, is a low-toxic acaricide, has a good effect on many kinds of red spiders, but mainly kills mite eggs, young mites and nymph mites, has no effect on adult mites, and its insecticidal effect is slow, but the efficacy period is long, up to 50-60 days. It is low toxic to natural enemies and other beneficial insects, and is not afraid of alkaline substances. It can be mixed with Bordeaux solution and stone sulfur mixture. The medicine can control all kinds of mites on cotton, vegetables, fruit trees, tea trees, tobacco and other crops, such as citrus leaf mite, apple leaf mite, cotton leaf mite, Hawthorn red spider. It is better to apply it when the density of mite eggs and young and nymph mites is low. 1000-2000 times of 5% EC or wettable powder can be sprayed for more than one month. Daben: also known as daben, daben, acarone, Altaurus, Sao mite Jing, is a low-toxic broad-spectrum acaricidal agent, contact effect, no internal absorption, can kill adult mites, young mites and nymph mites, but also effective for mites eggs. The drug has good quick effect and can last for more than 2 months. it is safe for crops and can control red spiders and kill piercing mouthparts pests such as aphids, leafhoppers and thrips. 75-1500 times of 15% EC was used to control leaf mites and tarsal mites of vegetables, and 500-1500 times of solution was used to control whitefly, leafhopper and thrips. Apple leaf mite, Hawthorn red spider, citrus whole claw mite, citrus rust gall mite, etc., spray with 20% wettable powder 2000-4000 times, tea leaf mites use 15% EC 750-1500 times, control leafhoppers, thrips, etc. (this product can not be mixed with alkaline substances and should not be used in fish ponds, mulberry gardens, silkworm farms and beehives).