There are a lot of cabbage worms on it, is there any way to cure it?

Cabbage worm is one of the most common pests in Chinese cabbage cultivation, which seriously affects the quality and yield of Chinese cabbage. If there are few varieties of Chinese cabbage, manual capture can eliminate cabbage insects, but the planting area of Chinese cabbage is too large, and manual capture is time-consuming and laborious, and the effect is inevitable. Before planting Chinese cabbage, Chinese cabbage varieties with high resistance to pests and diseases should be selected, which can effectively reduce the occurrence of cabbage worms.

Chinese cabbage is generally planted in autumn, and you can choose to plant it behind vegetables such as eggplant, tomatoes, beans, etc., and try to avoid planting it with vegetables that belong to the cruciferous family, such as cauliflower, Chinese cabbage, etc. After the Chinese cabbage is harvested, it is necessary to clean up the dead branches and leaves to reduce the source of overwintering insects. Cabbage insects have phototaxis and can be eliminated according to their characteristics.

During the growth of cabbage worms, black light can effectively kill cabbage worms.

Biological control methods are used to remove cabbage worms from radish or kale fields. If there are a lot of cabbage worms in the vegetable field, you can put chickens in the vegetable field. Although chickens also eat some vegetable leaves, when there are insects, chickens will choose to eat insects first.

However, it is better to have someone guard the vegetable patch. When they feel that the chickens start eating a lot of leaves, they need to be kicked out of the vegetable patch. In addition, if you can fence it around the vegetable patch with a net, you can use the insect eating characteristics of frogs to control cabbage caterpillars in radish or cabbage fields.

And frogs can only eat cabbage caterpillars or other pests, not leaves. The main natural enemies of the butterfly are red-eyed bees and goldflies. , can be put into the field in an appropriate amount during the growth of Chinese cabbage.

Through pest control, the number of cabbage insects in the field can be effectively controlled and the harm to Chinese cabbage can be reduced. Black lights can be placed in the wild to trap and kill adults.

For fields seriously damaged by cabbage insects, it is necessary to seize the opportunity to spray and control them in time. Targeted insecticides can be mixed and sprayed with new high-lipid membranes to shield the sense of smell of pests, inhibit the replication of germs, reduce their resistance and dosage, and improve the control effect. Brassica insects are not only harmful to Chinese cabbage, but also have a great impact on other cruciferous crops.

Brassica insects reproduce for 3-4 generations in the north and more in the south. After the vegetables are harvested, the larvae of the cabbage worm will lurk in the soil. Therefore, in order to prevent cabbage worms from appearing on the planted Chinese cabbage, it is necessary to avoid rotation with other cruciferous crops such as cauliflower, kale, etc., and it is best to plant after peppers, garlic, eggplant.

1. Physical control is mainly aimed at the adult cabbage butterfly, in the adult period, it can be controlled with frequency vibration insecticidal lamp or black light, which can well kill the adult insects, reduce the number of eggs laid, and control its harmful vegetables. 2. Protect natural enemies such as spiders and ladybugs; It can also release natural enemies insects, parasitic eggs such as broad-eyed wasps; Parasitic larvae include reddish velvet wasps; Parasitic pupae include butterfly golden wasps. 3. The best period for pesticide control is between the peak hatching period of eggs and the second instar of larvae.

After the seedlings emerge, they should start spraying, spraying once every 7 days, spraying 2 3 times in a row.

Physical control: sexual attractants can be used to trap and kill. Or set up a black light lamp every 50 acres of land to trap and kill adults. Agricultural control: ploughing, pruning, picking insects and fruits, early, medium and late maturing varieties with planting, planting corn traps in the field, and moths to lay eggs.

Pyrethroid pesticides are characterized by fast killing speed, high efficiency and relatively low pesticide residues after application, and the principle of action of this type of pesticide is to kill by interfering with the nervous system of pests. Physical control. The cabbage worm has phototaxis, so it can be eliminated according to this characteristic of the cabbage worm.

During the growth period of cabbage insect, the use of black light can effectively kill cabbage insect. In the cabbage fields that have been watered with gray water, it is difficult to see cabbage insects for a while, and other pests are gone. When turning over the vegetable garden and preparing to plant vegetables, sprinkle some dry grass and wood ash in the ground, and the effect of controlling vegetable pests and diseases is also very good.

Avoid continuous cropping with cruciferous vegetables, and can intercrop or intercrop with tomatoes, which can drive away the spawning of cabbage butterflies and reduce the harm. It is necessary to remove the residual leaves, residual plants, diseased leaves, etc. in time to eliminate the source of insects and reduce the base of insect sources in the coming year; In the same way, during the growth of cabbage, it is necessary to remove diseased leaves and residual leaves in time, which can control the number of insect populations and avoid the expansion of the scope of harm. Of course, some artificial auxiliary measures can also be used to prevent and control the harm of cabbage worms.

For example, spraying Chinese cabbage with soot water, artificially catching cabbage worms, etc.

Edible vinegar is prepared into an aqueous solution at a ratio of 1:400, sprayed 2 to 3 times continuously every seven days during the cabbage seedling period, which can effectively prevent the invasion of cabbage worms, and the solution is prepared at a ratio of 1:200 about a week before the cabbage is wrapped, and the anti-metallurgical effect is also very good.

When the cabbage worm develops resistance, a small dose has little effect, and a large dose should be used for control. For the control of cabbage insects, 500 1000 times solution of Sophora sophora plant insecticide, or 1000 times solution of BT emulsion can be sprayed on the foliar spray. For example, at noon, when the temperature is relatively high, it is still very suitable for spraying pesticides.

In the early stage of cabbage growth, the field can be evenly covered with garlic, garlic is spicy, and it can also be sprayed with chili pepper water from Chaotian pepper, which can effectively kill insects and eggs on the ground, and inhibit or reduce the number of insects.

1. Clean up the garden or vegetable field in time. When you find that the cabbage leaves are gnawed, you should remove the missing leaves in time. 2. After the vegetables are harvested, it is necessary to seize the time to renovate the soil and eliminate the source of insects.

3. Eliminate adult worms. The cabbage worm has phototaxis, and the number of eggs laid can be reduced by placing a black light at the adult stage to induce it to come forward and kill it in large quantities. 4. Capture manually.

Make an insect trap net to kill larvae or adults in the early morning. 5. Rational and scientific use of drugs. The larvae are very weak, and the use of drugs before the eggs begin to hatch to the third instar can kill a large number of insects.

After the occurrence of cabbage worms, the most effective way, of course, is to carry out drug spraying, from the young larvae began to issue, to be controlled in the first time, cabbage worms with the growth of generations, the amount of food will be larger and larger, the harm caused is more and more serious, plus the resistance of these young larvae is weak, it is also the easiest time to prevent and control, the use of drug spraying, you can eliminate the larvae in the bud.

For the prevention and control of these cabbage insects, before planting seedlings, deep turning of the soil, after a few days of drying in the planting, you can also sprinkle a grass ash, play a role in prevention and control, the adult of the cabbage worm is the cabbage butterfly, for this kind of adult, the best way to eliminate is to use the light to trap the most appropriate, use the insect trap lamp at night, place it in the cabbage field, can use the phototaxis of the cabbage butterfly, attract it over, so as to eliminate.

1.Biopesticides. It is safe for Chinese cabbage to eat and environmentally safe and harmless, and cannot be mixed with fungicides and alkaline pesticides, and avoid spraying under high temperature and strong light.

2.Pyrethroid insecticides. Fast speed, high efficiency, less residue, cabbage insects are easy to produce resistance, and can not be used in each production season.

You can spray the corresponding pesticides on the leaves and rhizomes to remove these insects, and then take care of them to water them and bask in more sunlight, which can be controlled.

Grass ash is not only a good pesticide, but also a high-value organic fertilizer. Mix 10 kg of plant ash with 50 kg of water, soak for 24 hours, and then take the filtrate and spray vegetables, which can effectively control aphids and yellow worms. In the seedling stage of greens and radish, a layer of plant ash can be spread around the vegetable seedlings, but not too much, and it also has an obvious killing effect on aphids.

Many boys have the habit of smoking, but they don't know that cigarette butts can kill pests, and cigarette butts are not difficult to collect. Unpack the collected cigarette butts, peel off the tobacco inside, put them in a container, pour water and soak them for 24 hours, and then spray the cigarette water on the pests with a watering can, which also has a certain insecticidal effect.

Protects the natural enemies of pests. Nature itself is balanced, and pests naturally have natural predators. It's just that with environmental pollution, some pest predators have slowly disappeared.

We need to pay attention to protecting the natural enemies of these pests, creating an environment conducive to their growth as much as possible, or increasing the number of natural enemies of pests through artificial reproduction, which will have a good effect on inhibiting pests. Green vegetable pests are rampant. We should divide them into greasy insects and cabbage bugs.

In rural areas, fluoropyridine urea is commonly used to kill cabbage worms. Kills ground insects during the day and underground insects at night. Greasy insects are commonly used by aphids, such as imidacloprid and other aphid special drugs.

When using chemicals to kill insects, the concentration of the drug must be determined according to the degree of drought and the size of the vegetables. The small plate is too tender, it can't resist the drug, it is easy to squat and hurt the seedlings, and the dosage should be smaller!

To prevent vegetables from spreading insects, weeds can be removed and herbicides and insecticides can be sprayed at the edge of the land to reduce the number of pests near the vegetable fields. The smell of the drug can also reduce the number of floating cabbage worms, which patronize to lay eggs and effectively prevent insects. In planting, it is necessary to apply fertilizer reasonably to make vegetables grow healthily and improve stress resistance.

In addition, reasonable seeding and planting spacing is also important. Don't plant too densely. It can easily be a place for pests to hide and breed.

When weeds grow on the ground, clean them up early to make room. increase the ventilation, ventilation and lighting of vegetable fields, and destroy the growth environment suitable for the survival of pests; Usually, stick insects are hung in the ground to catch insects. After the autumn harvest, the land is plowed again and the remaining stalks of the crop are buried in the soil, which can prevent pests from laying eggs on it.

Ploughing the land again before planting in the spring will kill most of the remaining pests.

You can sprinkle the ashes from the bottom of the pot or the inside of the kang on the greens, which can effectively kill the insects, and you can also kill the insects by spraying pesticides.

1. Do not replant cropping. Before sowing or transplanting, it is best to rotate with the previous crop of vegetables, such as cabbage can be rotated with cucurbitaceae or leguminous vegetables, which can reduce the incidence of pests and diseases. 2. Soil sterilization before planting.

Before planting, the soil is deeply turned and sterilized under ultraviolet radiation, and then planted after drying for 1 or 2 days, which can kill overwintering pests and eggs and reduce the reproduction rate. 3. Prevent overgrown weeds near the planting plot. Weeds and decaying leaves should be removed frequently from the periphery of the vegetable garden to prevent long-term parasitism of underground pests, such as ants, snails, ground tigers, etc.

Vegetable green worms. The adult is a cabbage butterfly.

It prefers to be active after the dew has dried in 100 days, and is most active at noon on a sunny and windless day. Vegetable green worm eggs are mostly on the back of the leaves, each female can produce more than 10 100 grains, the larvae hatch in the early morning, the larvae gnaw more leaves at the age of 5, which can account for more than 80% of the larval stage, and the old larvae cook more pupae on the back of the leaves to make cocoons. Biocontrol.

It can also protect natural enemies such as spiders and ladybugs, and release natural enemy insects. Physical prevention and **. It can be prevented with frequency-vibration insecticidal lamps or with colored plywood.

Insect trapping, conditionally isolated planting with insect repellent nets. The prevention optimizer pesticide is poured with 5% nail rhinitis and avermectin from the incubation period of the eggs to the third instar of the larvae.

Water such as cloud fungus should be sprayed every 10-15 days. Take turns to use it carefully and do not develop resistance.

Medicine can solve the problem and the effect of the medicine comes quickly, but the vegetables grown in our countryside do not take medicine. Once pesticides are used, most vegetables will leave wormholes because of the fear of pesticide residues on the leaves of vegetables. Although the appearance is not good, it is really reassuring to eat.

The taste is original and the texture is moist. The vegetables we see at the market are oily and commercial, and they are very popular with people, but when you eat them, you have to soak them in boiling water before you can eat them! The vegetables in the small vegetable garden in the countryside are sold in the market, although they are not beautiful, but they are delicious, in fact, this kind of food is pollution-free food, and it is not harmful to eat it with peace of mind.

Most of these pests breed insect pests with soil or manure, and are not good at using farm fertilizer, first leaving stump vegetable colonies on the rotten high-quality organic fertilizer and soil, and often planting in turn to avoid natural insect pests in the soil and returning straw to the field.

It can cause insect infestations. Straw is also not good for the field, and the straw does not have the effect of nutrient fertilizer yet, because the crops planted next year will not rot.

Pests can be completely eliminated without pesticides. The only way to do this is to burn fires in the countryside and use the leftover "grass wood", which also has the miraculous effect of destroying pests. First of all, what kind of grass and trees are in the grass, and the use of the grass and trees may be unexpected for you.

Now I don't burn the kang, but it's not difficult to use grass and wood. In winter, all kinds of plants in the mountains have withered. At this time, it is better to remove the grass and trees, burn the kang, and leave the gray material bag.

If the use of chemical fertilizers next year is the best anti-inflammatory and sterilizing effect, which can prevent the reproduction of vegetable green insects, eliminate hidden dangers, and completely eliminate the miraculous effect of insects, then, is the grass and trees really so remarkable?

Look at what's inside the grass. I know weeds.

They are all magical treasures in the mountains. Nature's kindness is not bad. It's just that we didn't find it, such as wild firewood, rhubarb, orchids, wormwood.

These plants are cleaned up, burned with grass and scattered on the cabbage leaves. These wild herbs contain a lot of disinfecting effect, so it is best to get rid of cabbage worms.