Insecticides are classified into three types: systemic, osmotic, and conductive. Common systemic insecticides include dichlorvos, chlorpyrifos, and insecticides. Xiaobian summarizes three types of systemic insecticides. Such as organic phosphorus type, organic nitrogen type, carbamate series, etc., let's take a look at it with Xiaobian.
1. Organophosphorus pesticides
1, dichlorvos
Mechanism and characteristics
Dichlorvos is a high-efficiency, fast-acting, broad-spectrum organophosphate insecticide suitable for controlling a variety of pests on the lawn, mosquitoes, flies and other health pests as well as fumigation to control pests during the storage period of turf seeds.
Main preparation
Formulation with 50% cream, 80% cream
Control object
Spraying 800-1500 times of water with 80% emulsifiable concentrate can control a variety of chewing mouthparts pests on plants, such as yellow-striped beetle, tea caterpillar, rice leafhopper, planthopper, bean hawk moth, apple leaf curler, Peach small heartworm, tobacco budworm, sugar cane, etc. Empty warehouses are used to control pests such as rice elephants, grain thieves, and wheat moths. They are sprayed with 80% emulsifiable concentrate 1000 times, and sealed for 2 to 3 days after application. The size of its insecticidal effect is directly related to the temperature. The higher the temperature, the stronger the insecticidal effect.
2, phoxim
Mechanism and characteristics
Phoxim is a high-efficiency, low-toxic, broad-spectrum organophosphate insecticide with strong contact and stomach toxicity.
Main preparation
The preparation has 40% cream and 2.5% microparticles.
Control object
It is mainly used to control underground pests on the lawn, and can also control mosquitoes, flies and other sanitary pests and storage pests, especially for cockroaches, cockroaches and golden worms. Foliar spray to control various pests, use 1200 ~ 2000 times liquid; control underground pests by soil or seed treatment, seed dressing with 1% ~ 2% (active ingredient, ai) seed dressing, soil treatment with 2.5% microparticles 1.5 ~1.8kg/hm2.
3, chlorpyrifos
Mechanism and characteristics
Chlorpyrifos is a broad-spectrum organophosphate insecticide and acaricide . It has a stomach poisoning effect and a contact killing effect, and has high volatility in the soil.
Main preparation
Formulation has 40% cream
Control object
It is suitable for controlling pests and mites on lawns, and can also be used to control ectoparasites such as mosquitoes, flies and other sanitary pests and livestock. Control pests such as scale insects, mites, red spiders, and thrips, spray with 500-1500 times liquid; control underground pests with 1.2-2.8kg/hm2 (ai) mixed with poisonous soil.
4, Omethoate
Mechanism and characteristics
Omethoate has a contact action, a systemic action and a stomach toxicity, and is a broad-spectrum organophosphate insecticide and acaricide.
Main preparation
Formulated with 40% omethoate EC
Control object
Spray with 1000~2000 times liquid to control aphids, thrips, leaf bounces, blind mites, leaf mites, etc.; spray with 800-1500 times liquid to control cotton red spider, pea leaf miner, pear hibiscus, citrus red wax mites , fruit flies, tobacco budworms and other pests on cotton, fruit trees, vegetables.
5, malathion
Mechanism and characteristics
Malathion has good contact, stomach toxicity and weak fumigation.
Main preparation
The preparation has 45% malathion EC, 25% malathion oil, 70% high quality malathion EC (insecticide phosphorus), 1.2% malathion powder, and 1.8% malathion powder.
Control object
It is suitable for controlling chewing mouthparts and sucking mouthparts pests on lawns, pastures, flowers, ornamental plants, vegetables, fruit trees, etc. It can also be used to control household health pests such as mosquitoes and flies, as well as ectoparasites and human bodies. Hey, head squatting.
When used, it can be used to control rapeseed meal, cotton aphid and cotton aphid with 45% malathion EC. It can be used to control cabbage caterpillar, cotton red spider and cotton aphid.
6, diazinon
Mechanism and characteristics
Diazine phosphorus heterocyclic organophosphorus insecticide, broad-spectrum insecticide, acaricide, contact toxicity, stomach toxicity and fumigation, also has a certain systemic effect, mainly used for controlling horticultural plants, ornamental Leaf-feeding pests on plants and lawns, sucking mouthparts pests and underground pests can also control domestic pests and livestock pests.
Main preparation
The preparation has 50% diazinon emulsifiable concentrate and 2% granules.
Control object
Spray 50-900kg of water with 600% to 900mL (ai300-450g) per hectare, and control underground pests with 2% granules of 18.75kg (ai300~450g) per hectare. This medicine cannot be mixed with enemy cockroaches. It cannot be used in copper cans, copper alloy cans or plastic bottles.
Second, organic nitrogen insecticides
1, insecticidal double
Mechanism and characteristics
The insecticidal double is a silkworm toxin insecticide, which is a nerve poison. The insects show dullness, slow movement, loss of ability to invade crops, stop development, soften the body, lick, and die until the insects contact and take the medicine. The insecticidal double has a strong systemic action and can be absorbed and transmitted by the leaves and roots of the crop.
Main preparation
18% water, 45% soluble powder, 3.6% large granules, etc.
Control object
Rice aphids, vertical leafhoppers, rice borers, thrips, spider mites, planthoppers, vegetable cabbage caterpillars, diamondback moth, vegetable aphid; corn armyworm, apple aphid, pear star caterpillar, citrus leaf miner, bodhidharma Swallowtail and so on.
2, insecticide list
Mechanism and characteristics
The insecticidal list is a similar variety of insecticidal doubles, the insecticidal double is a double sodium salt, and the insecticidal single is a single sodium salt. Insecticidal is also an analogue of synthetic silkworm toxin that rapidly transforms into insects and converts to either cecropin or dihydrocinetoxin. The drug is a competitive inhibitor of acetylcholine, which has strong contact, stomach and systemic conduction effects, and has good control effect on larvae of lepidopteran pests. The drug is mainly used for controlling sugarcane, rice and other crops. Pests.
Main preparation
90% soluble powder, 50% effervescent granules and wettable powder compounded with other pesticides .
Control object
Rice stem borer, stem borer, pitcher leafhopper, cabbage caterpillar, cane toad, corn borer, etc.
3, insecticidal and insecticidal monoammonium
Mechanism and characteristics
It is an organic nitrogen-based biomimetic silkworm poisonous insecticide. The insecticidal is a diammonium salt, and the insecticidal monoammonium is a monoammonium salt. Both insecticidal and insecticidal are similar. The former is an ammonium salt and the latter is a sodium salt. The pest has stomach poisoning, contact killing and systemic conduction. The main mechanism of action is that the medicament enters the insect body and transforms into silkworm poison, which blocks the synaptic transmission of the central nervous system, causing the insect to paralyze, paralyze and refuse to eat. The prevention and control of rice pests is significant, with a long-lasting effect and is safe for rice.
Main preparation
18% insecticidal water-repellent, 50% insecticidal soluble powder and wettable powder compounded with other pesticides.
Control object
Chilo suppressalis, stem borer, rice leaf roller, borer, cabbage caterpillar, cotton aphid, diamondback moth larva, red spider, big larva.
4, killing Dan
A derivative of the silkworm toxin, widely used, can be used to control a variety of pests and nematodes such as Lepidoptera, Coleoptera, Hemiptera, Diptera. Little effect on predatory mites. Its toxicological mechanism is to block the transmission of nerve cell junctions in the central nervous system, causing paralysis of insects.
Main preparation
50% soluble powder, 4% granules.
Control object
It can be used to control a variety of pests and nematodes such as Lepidoptera, Coleoptera, Hemiptera, Diptera, and has little effect on predatory mites.
5, insecticidal ring
Mechanism and characteristics
It is a silkworm toxin insecticide with contact and stomach toxicity, and also has certain systemic and fumigation effects, and can kill eggs. The toxicity to pests is slower, and those with mild poisoning can sometimes resurrect. It disappears faster in plants, has a shorter residual period, and has less residual crops at harvest. The insecticidal ring has good effects on Lepidoptera, Coleoptera and Homoptera pests, and can be used to control various pests on rice, corn, sugar beets, fruit trees and vegetables, but it is highly toxic to silkworms.
Main preparation
50% soluble powder.
Control object
It has good control effect on lepidopteran and coleopteran pests. (A), mainly to control rice aphids (Dalian, Chilo suppressalis, Sanhua), rice aphids, vertical leafhoppers, rice planthoppers, rice leafhoppers. (B), tea leaves, green tea leaves, tea feet. (C), fruit tree pests: such as peach aphid, apple aphid, apple red spider, pear star caterpillar.
6, insecticide
Mechanism and characteristics
It is a silkworm toxin insecticide. It is a nerve agent with contact and stomach toxicity. It also has certain systemic and fumigation effects. After insect contact and feeding, it shows dullness, slow action, and loss of ability to invade crops. , stop development, soften the body, sputum, until death.
Main preparation
There are no registered insecticidal sulfone preparations in China.
Control object
It is mainly used to control lepidopteran and coleopteran pests such as rice blast, diamondback moth, potato beetle and grape bud moth.
Third, the carbamate series
1, methomyl
Mechanism and characteristics
It is a systemic, highly toxic insecticide that effectively kills eggs, larvae and adults of many pests. It has the dual effects of contact and stomach toxicity. After entering the worm, it inhibits acetylcholinesterase, which makes the acetylcholine, which plays an important role in insect nerve conduction, unable to decompose, causing the nerve impulse to be unable to control the transmission, causing the insect to have convulsions, excessive excitement, paralysis and tremor. Unable to feed on the crop, leading to death. Insect eggs usually do not survive the blackhead stage after contact with the agent, and even die if they hatch.
Main preparation
40%, 90% soluble powder, 20% emulsifiable concentrate, 24% soluble liquid, 10% wettable powder.
Control object
It is very effective against aphids, thrips, armyworms, cabbage silver-streaked night owls, tobacco leaf curlers, tobacco hawk moths, cotton leaf moths, codling moths, cotton aphids, etc., for rice aphids, planthoppers and fruit tree pests, etc. Have a good control effect.
2, Carved
Mechanism and characteristics
It is a broad-spectrum, highly toxic, systemic insecticidal and nematicidal agent. It is a cholinesterase inhibitor, and its binding to cholinesterase is irreversible and thus highly toxic. The drug is absorbed by the roots of the plant and transported to various organs, accumulating more in the leaves. The rice field is sprayed with water, and the residual effect period is shorter. It has a long residual effect in the soil and has a residual effect in cotton and sugarcane fields for 40 days.
Main preparation
3% granules, 350 g/L suspension seed coating and a variety of seed treatments formulated with other pesticides.
Control object
Rice leaf curler, rice weevil, rice leafhopper, rice planthopper, armyworm, cotton bollworm, aphid, aphid and nematode
3, propyl thiocarbacarb
Mechanism and characteristics
It is a kind of carbamate insecticide with broad spectrum and systemic action. It is mainly used for stomach poisoning. It is suitable for crops such as rice, corn, soybean, potato, sugar cane, cotton, vegetables and fruit trees. Pests.
Main preparation
The thiocarbamate preparation has not been registered in China.
Control object
It is used to control a variety of pests such as planthopper, leafhopper, corn borer, diamond, aphid, scale insect, armyworm, cane toad, black sugar cane turtle, aphid and so on.
4, butyl thiocarbacarb
Mechanism and characteristics
It is metabolized in insects to toxic carbofuran. Its insecticidal mechanism is to interfere with the insect nervous system, inhibit cholinesterase, and cause insects' muscles and glands to continue to excite and cause insect death. The drug is systemic, has contact and stomach toxicity to insects, has a long-lasting effect, and has a wide spectrum of insecticides, and can be used for controlling various pests on citrus, rice and vegetables.
Main preparation
5% granules, 20% emulsifiable concentrate, 20% aqueous emulsion, 35% seed treatment.
Control object
Controlling aphids, mites, golden worms, beet hides, beet jumping, potato beetles, fruit leaf roller moths, cockroaches, apple cocoons, tea leaf mites, pear worms and scale insects, etc.
5, speed destroy
It has contact and fumigation effects, strong knockdown force, short duration of action, generally only 3-4 days, and has special effects on rice planthopper, rice leafhopper and rice locust, and tea leafhopper. It has a good killing effect on rice paddy grasshoppers.
Main preparation
20% emulsifiable concentrate, 25% wettable powder.
Control object
It is mainly used to control rice planthoppers, rice leafhoppers, rice locusts, rice paddy grasshoppers, tea green leafhoppers, etc.
6, aldicarb
Mechanism and characteristics
Also known as iron gram, it is a carbamate insecticidal, acaricidal and nematicidal agent that inhibits the cholinesterase of insects. It has contact, stomach poisoning and systemic action. It can be absorbed by plant roots and transmitted to the top of plants. Organs and organs. It can control sucking mouthparts pests and leaf-feeding pests such as aphids, mites and thrips, and has good control effects on nematodes in various growth stages of crops, and can prevent and control insects as vectors. Aldicarb has a quick-acting effect and generally works within a few hours after application. The efficacy lasts for 6-8 weeks. When the amount of drug is too much or concentrated in the vicinity of seeds and roots, it is prone to phytotoxicity. Aldicarb is easily metabolized and hydrolyzed in the soil, but it is difficult to decompose under dark conditions and is easily decomposed under alkaline conditions. The half-life is 55 days in organic matter and 17 days in inorganic matter.
Main preparation
5%, 15% granules.
Control object
Cotton aphid, cotton blind elephant, cotton leaf bee, cotton red spider, cotton boll weevil, whitefly, thrips, nematodes and other pests.
7. Insecticide
Mechanism and characteristics
It is a cholinesterase inhibitor with contact and stomach toxicity, and has a certain systemic action in plants. This product has a wide spectrum of insecticides, which can control the damage of Thysanoptera and other pests through foliar spray. It can also be used as a seed treatment agent and granules to control soil pests.
Main preparation
80% fast-acting WP registered in China is used for the prevention and control of sanitary pests.
Control object
It can be used as a soil treatment to control underground pests, and can also be used to control health pests such as cockroaches, cockroaches, ants and bedbugs.
8, oxazide
Mechanism and characteristics
It has strong systemic and two-way conduction and can control a variety of crop aphids. The period of validity can be 5 to 10 days. No phytotoxicity was observed at the dose. Safer to natural enemies.
Main preparation
25% emulsifiable concentrate.
Suitable for controlling various mites.
More pesticide knowledge, please pay attention to China Pesticide Network
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