Common insect control methods in vegetable gardens and orchards, how to control vegetable pests, and

1. Treat insects with fertilizer.

Urea has the effect of destroying insect chitin, and the "urine washing agent" prepared by mixing urea, laundry detergent and water in the ratio of 4 1 400 has a good control effect on various pests such as aphids, cabbage worms and red spiders that harm vegetables and flowers; In the egg-laying period of cabbage worms, spraying with 1%-3% lime water or 1%-3% superphosphate extract can avoid more than 52% of eggs within a week, and the effect can reach 84% on the fifth day.

2. Treat live insects with dead insects.

Pick up 100 grams of cabbage worms per mu, mash and rot, mix 250 ml with water, add 50 grams of washing powder, and then mix 50 kg with water, and spray the body fluid of cabbage worms to prevent and control cabbage worms, and the effect can reach more than 90%.

3. Grass trapping.

Taking advantage of the habit of crickets liking to inhabit the thin layer of grass, the small grass piles with a thickness of 10-20 cm are evenly placed in the field in a row of 5 meters and a pile of 3 meters, and the grass is harvested and killed the next day; It is even more effective if you put some poison bait under the grass pile or make a burrow with a wooden stick with a diameter of 3-5 cm. This method is not easy to promote on a large scale, but it is very suitable for application in vegetable fields.

4. Yellow plate booby-trap.

Aphids, whiteflies, etc. have a strong tropism to yellow, and yellow plates can be set to trap adults. The method is: cut the fiberboard or cardboard into 1 meter strips, paint them orange peel yellow, and then coat them with a layer of sticky oil (mix well with No. 10 engine oil and a little butter), 32-34 pieces per mu, and place them between the rows, so that the bottom of the yellow board is level or slightly higher than the top of the plant.

When aphids, whiteflies, etc. stick to the surface of the board, it is necessary to recoat the viscous oil in time, generally 7-10 days to recoat once.

5. Extrasexual hormone booby-trapping.

The use of extrasexual hormones to control pests is a new technology for insect control that has been developed in recent years. At present, there are roughly three forms of extrasexual hormones: the use of synthetic extrasexual hormones (called "sexual attractants"), the use of crude extracts of extrasexual hormones, and the direct use of live females that have not copulated.

The use of female moth live trapping, easy to operate, low cost, easy to promote, when the number of insects is small, the application effect is obvious. The practice is: use 50-60 mesh anti-tremor Zheng insect net to make a round cage with a length of 10 cm and a diameter of 3 cm, put 1-2 female moths without mating tails in each cage (you can collect female pupae in the field first and put them in the cage, and set aside after feathering), hang the cage on the water basin, fill the water in the water basin and add a little kerosene, put it in the field after dusk, and trap a lot of male moths every night.

A good way to prevent insects, learn this trick to protect the seedlings from being bitten! (1)

A good way to prevent insects, learn this trick to protect the seedlings from being bitten! (1)

After the land is leveled, a vegan liquid fertilizer is applied to condition the soil to pH value, and insecticides are mixed with spraying, and high temperature sterilization and sterilization. The seeds are soaked in enzyme fertilizer for a few hours and then sown, so that the seedlings are strong and strong, and the ability to resist diseases and pests is improved.

Prevention in advance is much better than pests coming and then exterminating, first of all, to prevent the reproduction of pests on the ground, gnawing root insects, causing blight, root rot, so the land must be filtered first. You can use 100 grams of diluted water (Bacillus subtilis) to irrigate the farmland, which can prevent insect pests and improve the soil, which is of great help to plant vegetables in the later stage. After 4-5 days of sprinkler irrigation, the soil insect eggs can be planted to a certain extent, and the use of microbial pesticide dry grass is not harmful to the human body.

When farmers plant vegetables, there will inevitably be some pests and diseases, and pests and diseases have always been a problem in field management, so today we will understand how to control vegetable pests and diseases from the three aspects of physical control, biological control and chemical control.

1. Physical prevention and control 1Install insect nets.

In the growing period of vegetables, you can cover the scaffolding with 50 mesh insect nets, and the pests and diseases in the ground need to be thoroughly cleaned up before installation, and the installed net shed needs to be compacted around it to avoid pests from entering the shed again.

2.Barrier precautions.

When the place where the pest and disease occurs is on the leaves, farmers need to pay attention to the changes in the leaves of the plants, and if the leaves are infected with diseases, they can remove the leaves in time to block the development of pests and diseases.

3.Light booby-trap.

From April to October every year, an insecticidal lamp can be installed in every 30-50 acres of land, but it should be noted that the insecticidal lamp should be placed meters above the ground, because the light can attract phototaxis bugs in this area, which can trap them. The insecticidal lights need to be turned on every night and turned off during the day.

2. Biological control 1Exploitation of natural predators.

When pests and diseases occur, we can also choose to use the method of killing natural enemies, which can increase the number of natural enemies and improve the predation rate of pests and diseases.

2.Antibiotic use.

Antibiotics are metabolites of bacteria, which can lead to the death of pests and diseases, and antibiotics with lower toxicity are generally chosen.

3.Application of insect growth regulators.

Insect growth regulator is a kind of agent that inhibits the physiological development of pests and diseases, and even leads to the death of pests and diseases. It is characterized by low toxicity and less pollution to the environment.

Third, chemical control pesticides are also a part of chemical agents, pesticides are an indispensable part of the growth process of vegetables, when vegetables appear pests and diseases, we should first consider the choice of low toxicity, targeted pesticides, and to avoid the use of a single pesticide, resulting in pests and diseases resistance. Special attention should be paid when using pesticides to avoid the impact of incorrect use of pesticides on the human body or the environment.

Fourth, agricultural control technology 1High temperature stuffy shed to prevent disease.

When planting vegetables in the greenhouse, you can choose to completely close the greenhouse during the summer stubble change, and continuously dry at high temperature for about 6-10 days to kill a variety of germs.

2.Deep ploughing of the soil.

During the winter overwintering, you can plough the soil for about 20-25 cm, and bury the remains of pests and diseases and dead branches and leaves deep in the soil, which can effectively reduce the germs.

3.Breed selection.

When selecting varieties before planting, it is necessary to pay attention to the selection of disease-resistant or disease-resistant varieties that have undergone quarantine, and grafted seedlings can be selected to prevent wilt of vegetables and fruits, as well as melons and fruits.