1 Biological pesticides for controlling leaf-eating pests The following biological agents can be used to control the scorpion moths, scorpion moth, caterpillar, yellow thorn moth, tussah, etc.

1.1 Insect growth regulation (bionic, pesticide)

The chlorfenapyr series insecticide is a new insect growth regulator, and its insecticidal action mechanism is to inhibit the chitin synthesis of insect epidermis. The chlorfenapyr is mainly a stomach poison, but it can also invade the epidermis of insects. The control of leaf-eating pests has special action mechanism, good control effect, long residual effect period, low control cost, rain-resistant showering, and pest resistance. The advantages of plants, humans and animals, natural enemies and environmental safety.

1) Diflubenzuron No. 1. Diflubenzuron 1 is also known as diflubenzuron and dichlorfen. It is stable in acidic and neutral media and easily decomposes in alkaline media. It is low in toxicity to people, animals, birds and fish. The formulation has 20% diflubenzuron suspension and 25% dichlorpyrifos wettable powder.

The main role of chlorpyrifos No. 1 is stomach poisoning and contact killing, so that when the larvae molt, a new epidermis cannot be formed, and the worm body becomes deformed and dies. It has special effects on lepidopteran pests and is also effective against a variety of pests such as coleoptera and diptera. When controlling the armyworm, yellow thorn moth, peach hawk moth, and jujube scorpion, use an effective dose of 10-15g per 667m2 (diluted about 2000 times diluted with water); when controlling Spodoptera litura, use an effective dose of 2-4g per 667m2 (right) The water is diluted by about 15,000 times).

The precautions for the use of Diflubenzuron No. 1 are basically the same as those of Diflubenzuron.

2) Diflubenzuron No. 3. Diflubenzuron No. 3, also known as diurea No. 1 or chlorfenapyr. Pure product is white crystal. It is more stable to light and heat, and is easily decomposed by alkali and strong acid. Storage at room temperature is relatively stable. It is a non-toxic pesticide and safe for natural enemies. The formulation is a 25% chlorfenapyr suspension.

Diflubenzuron 3 belongs to insect growth regulators. The agent is mainly a stomach poisoning effect, and some insect larvae die quickly because they cannot molt. The larvae no longer take food after taking the medicine. Generally, the disability is started 3 days after spraying, and the peak of disability is reached in about 5 days. Since the adult does not molt, the agent is ineffective against adults.

Diflubenzuron No. 3 has a special effect on lepidopteran pests. When controlling pests such as big bag moth, jujube scorpion and yellow thorn moth, it can be sprayed with 2000-2500 times. It is very effective to dilute 800-1000 times of water to prevent and control the leaf miner.

There is a precipitation phenomenon of the chlorpyrifos No. 3 suspension. When using, shake it first, then dilute with water. Before the larvae are three years old, the application of the drug is high, and the application of the larvae at the advanced age is low, so the dosage should be appropriately increased. In addition, it should be stored in a cool place.

In order to give full play to the insecticidal effect of the chlorfenapyr and achieve the expected control effect, it is necessary to grasp three links: First, accurately grasp the timing of spraying. It is best to use the drug before the larval hatching to the third instar of the larva, and strive to spray it within 1 week. The second is accurate dispensing. Ensure that the active ingredient at the diluted concentration does not decrease. Thoroughly dilute the sediment at the bottom of the vial. It is best to open the vial to clean up the drug deposits. The third is that the spray is even and thoughtful. Since such agents are not systemic, it is necessary to uniformly apply the medicine to the upper and lower sides of the tree during spraying.

1.2 Bacterial pesticide BT emulsion

The BT emulsion is a microbial pesticide of Bacillus thuringiensis and is a bacterial insecticide of Bacillus. Its main insecticidal ingredient is the parasporal crystal. The preparations are Bacillus thuringiensis wettable powder and BT emulsion (containing 0.2% pyrethroid insecticide).

This agent has become the main biocide widely used in countries all over the world. The pathogenic mechanism of BT emulsion is that BT insecticidal toxin causes disease in the digestive tract of the pest to die. After eating the leaves with BT emulsion, the leaf-feeding pests cause convulsions, stop eating, unresponsiveness, diarrhea, and black rings appear in the abdomen, gradually expanding to the whole body, and finally poisoning to death, turning into black software, decaying, hanging upside down or dying in leaves and On the branches.

BT has pathogenic and toxic effects on a variety of lepidopteran larvae and spider mites, such as P. sinensis, P. sinensis, Jujube, and Helicoverpa armigera. It is mainly used to control larvae of Lepidoptera pests. Use chemical pesticides 2-3 days in advance. It has a good effect on the control of lower larvae of pests. High temperature weather application is best. Spray-based, using a concentration of 500-800 times liquid (per 667

M2 medication 100-150g). The worms that are killed by the Bacillus thuringiensis and blackened and rotted are collected, packed in gauze bags, rubbed in water, and then sprayed 50-100L of water per 50g of corpse washing liquid, and the insect control effect is also very good.
The agent is a wettable powdery biological preparation and should be stored in a dry and cool place below 25 °C to prevent exposure and moisture. The agent is an ideal agent for protecting the environment and ecology for people, animals, natural enemies, plants and the environment. It should be noted that it is used in an environment above 20 °C, 27-32 °C is the optimum temperature; the liquid is neutral (pH 7.5), and can not be mixed with alkaline pesticides, systemic organophosphorus insecticides or fungicides. In the use of young larvae, the spray is even and thoughtful, and it should be re-sprayed after the rain.

1.3 Plant pesticides

1) 1% smoke·Bai·oil. 1% smoke·bai·sugar oil is a multi-Chinese herbal plant chyme insecticide with a wide spectrum of insecticides. It can also kill quickly against insects that are easy to produce resistance. It has good degradation, no residual toxicity, safe use, no pollution, no pollution. It has the characteristics of stimulating growth and growth of plants. Dilute 1500-3000 times the water spray.

2) Herb No. 1 (0.6% matrine·lactone aqueous solution). Baicao No.1 is a plant-derived pesticide that is prepared by pulverizing and dissolving various plants and Chinese herbal medicines such as Niu Xinpu and Sophora humilis, adding additives and penetrant. The mechanism of action is mainly contact killing, supplemented by stomach poison, which promotes plants. It can be used to control all kinds of aphids and leaf-feeding pests, and it can be diluted with water by 1000-2000 times, and the control effect is over 98%. The agent is a new generation of plant insecticides that are low in toxicity, low in residue, and do not pose a hazard to humans and animals and the environment.

3) Hundreds of insects (1.2% smoke · ginseng emulsifiable concentrate). Hundreds of worms are plant pesticides. The active ingredients are nicotine and matrine, which have stomach poisoning, contact and fumigation effects on insects. Low toxicity to humans and animals, no pollution to the environment, no phytotoxicity. It can be diluted 800-1000 times with water to control pests such as aphids and other pests such as larvae and larvae. It can be used to control the young larvae of Lepidoptera (before the third age).

4) Fruit and vegetable net (0.5% alfalfa emulsifiable concentrate). The fruits and vegetables are plant pesticides. The drug is highly effective, safe, low-toxic, low-residue, and does not cause phytotoxicity. At the same time, it has stomach poisoning, contact killing and certain anti-feeding effects, but it is mainly based on antifeeding and stomach poisoning. Dilution of water 800-1200 times spray can prevent leaf-eating pests such as scorpionfish, moth, moth, etc., with a control effect of 98%, second only to pyrethroid insecticides.

2 Biological pesticides for controlling sucking pests

2.1 fungal pesticides

Sclerotium is a new fungal biopesticide. The main insecticidal component of the fungus is an ester-soluble sterol compound, which has low toxicity, fast knockdown on aphids, and kills leafhoppers, does not harm grasshoppers, ladybugs and other beneficial insects, and promotes growth effects on plants. . Use a concentration of 200-300 times the solution.

2.2 Antibiotic series pesticides

1) Qiqisu (1.8%, 0.9%). Qi Fusu, also known as Ai Fuding, is a broad-spectrum and highly effective insecticide. The active ingredient of the medicament is avermectin. It is widely used at home and abroad, and can effectively control a large number of plant mites and other pests that are not sensitive or resistant to common pesticides, such as leaf miner, moth, scorpion, venomous moth, hibiscus, etc. Leaf-feeding, sucking pests. It has stomach poisoning and contact killing effects on mites and other pests. Compared with chemical pesticides, the drug has a fast recovery rate of predatory and parasitic beneficial insects, which is beneficial to ecological balance. It can prevent and control red spider by diluting 15000-20000 times of water. It is a kind of high-efficiency acaricide (about 20ml of 1.8% stock solution per 667m2). Dilution of water 3000-5000 times liquid spray can kill leaf-eating pests, and it can also kill nematodes.

The agent is easily decomposed in the presence of oxygen, light, etc., and has no residue, and is harmless to humans, animals, plants, natural enemies, and the environment.

2) 10% Liuyangmycin aqueous solution. Liuyangmycin is a kind of acaricide. It is a new type of antibiotics. It is sprayed with 800-1000 times. The effect is similar to that of chemical pesticides such as dicofol, ketone and gram. The efficacy period can reach 15-30 days.

3) Huaguangmycin (2.5% powder). Huaguangmycin is a new type of antibiotic acaricide. It does not pollute the environment, has no residue in the air and soil, and has protective effects on beneficial insects. It is one of the better agents for protecting natural enemies. It has a stimulating effect on plants. The concentration is 600-800 times of water dilution, and the best effect is 2 times in 7-10 days.

2.3 Plant pesticides

Among the plant pesticides are guard birds (0.5% cucurbitacin). The agent is a plant insecticide mainly composed of cucurbitacin. It is the best for all kinds of aphids, especially the aphids that are prone to resistance, and also has a certain effect on leafhoppers. Use a concentration of 800-1000 times the solution.

China Pesticide Network Recommendations: Bo Shibang plant growth regulator brassinolide

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