How to control heartworms and what do growers need to pay attention to?

AgriculturePlanting is a tedious production activity, timely sowing, fertilization and harvesting is far from enough, farmers and friends also have an important thing is to carry out pest control in time. Everyone is no stranger to heart-eating insects, which, as the name suggests, are pests that specialize in eating inside crops; Heartworms, also known as heartworms, are extremely harmful to the stems, leaves, straws and fruits of crops, resulting in a great impact on yield and quality.

Most of the diseases and insect pests are closely related, and the presence of insect pests means that diseases have occurred, or corresponding diseases have occurred. Although insect pests are more harmful and control measures may be more difficult, they are basically preventable and curable. How should heart-eating worms be controlled?

What do growers need to pay attention to in the process of agricultural planting? We can control it according to the growth phenology of crops, seasonal climate change, and the development habits of heartworms.

1. Heart-eating insects are insects that erode the inside of crop plants. There are hundreds of thousands of species and varieties of pests, and the corresponding control measures are also different. How to control heartworms?

First of all, we must realize that heartworms do not refer to a specific pest, such as peach borer, pear heartworm, pear heartworm and cotton bollworm are all common heartworm species. In addition to fruit trees such as apricots, peaches, pears and plums, they also eat more on the straw of staple crops such as corn, rice and wheat, so comprehensive control of heartworms has become a top priority in agricultural production activities.

2. Understand the reproduction, growth and development rules and activity habits of heart-eating insects. There are many types of heart-eating insects, and the corresponding growth rules and habits are also different, and there may be differences in the occurrence of heart-eating insects between different natural regions. Some heartworms have a very high reproductive efficiency, and can derive about 4 or 5 generations a year; However, there is no obvious difference in the harmfulness of the first generation and the third generation or later generations, and it may even double the harm.

After April, heart-eating insects will enter a high incidence period, especially in the season when there is more rain and warming, the activities of heart-eating insects are more frequent, which causes greater harm to crops and fruit trees in the peak growing season. Heart-eating insects are usually diurnal and nocturnal, and their gnawing on crops is more severe when the air is humid and the temperature is relatively stable.

3. Agricultural control measures for heartworms and related drug control measures. The control of heart-eating insects also needs to be determined according to the growth of crops and the damage of larvae, adults and nymphs. The relatively low cost is agricultural control measures, timely cleaning of weeds and dredging drainage and irrigation, cleaning up shade and obstructing ventilation and light transmission of shrubs, reasonable application of fast-acting nitrogen fertilizer can also better prevent large-scale outbreaks of heart-eating insects.

Drug prevention and control is the most direct and effective, and can be booby-trapped with homemade sugar water, wine and sweet and sour liquid with vinegar; Special drugs can also be used to sanitize treatments, such as 10% cypermethrin, 20% inulinin and 21% inulinoid drugs of the corresponding multiplier liquid to spray foliage and plants.

To prevent heartworms, it is necessary to strengthen the cleaning and tree pruning work, thoroughly sweep the dead branches and leaves and weeds in the garden, prune the diseased and insect branches in time, and remove the insects and fruits to eliminate them. It is necessary to protect the natural enemies of heart-eating insects. During the breeding period of natural enemies, try to use less pesticides or safer agents.

Heart-eating insects prefer to stay diurnal and nocturnal, and the climate is warmer and the weather is more severe. There are obvious phototaxis and chemotaxis. Therefore, setting up black lights in an orchard or bean field can be booby-trapped.

Or use sugar, vinegar, water, a solution with a ratio of 1:4:16 and add a small amount of trichlorfon to prepare a sweet and sour liquid to trap and kill.

If the insect infestation is too serious, inulin pesticides can be used to kill when there are too many eggs.

Early defenses are needed. Pesticides can be sprayed. Homemade sugar water can also be used to trap and kill insects.

Plant insecticides should be purchased in a timely manner. Spray evenly on the leaves. It should not be watered during the medication, otherwise it will have no effect. It should be noted that organic fertilizers should be applied regularly. Clean up weeds in time, dredge drainage and irrigation, and ventilate more.

The control time of heart-eating insects is generally selected in the excavation stage, pupal stage and open field stage of Xianming sedan sedan seedlings. When this acacia is burned, the pesticide can be sprayed on the ground, which has a good insecticidal effect. In addition, if an adult heartworm is caught, it needs to be controlled.

Two sprays are required, 15 days apart. It can be used with phosphine or phosphine microcapsules.

The mid-to-late management of soybean is an important guarantee for high soybean yield, especially for areas with large precipitation, timely drainage and flood prevention has become the main content of soybean management. Note that we should "fly" the adults in the field and control the number of moths in each swarm in time. With 80% dichlorvos oil 100 150ml mu, soaked with corn straw for fumigation.

The specific operation method is to select the corn straw between the two nodes, peel off one end, leave the core depression as the core depression, and the other end as the core depression and insert it into the field, and insert 40 50 roots per mu evenly. For soybean fields with poor ridge prevention ability, we can use 20ml of cyhalothrin per mu, deltamethrin or 25% faefocco 20 30ml, and spray 1000 times of sulfur and phosphorus emulsion with water Liquid spray also has a good control effect on pod larvae. For every 100 soybean plants, we can grow 1,000 aphids, but this is only a criterion and depends on the situation.

Even if this standard is not met, we still need to control soy aphids in a timely manner.

The control group was treated with 15ml of kung fu emulsion, 35% ethyl acetoacetate emulsion AI25kg, and 3% metalidine emulsion 15 20ml. When soybean red spider pests occur, they should be controlled in time. According to the planting of soybean per mu, 48% chlorpyrifos emulsion 100ml and avermectin mixed spray 20ml can be used, or 15% removal emulsion 3000 times liquid, 5% baccarin suspension 1000 2000 times liquid spray.

When spraying, pay attention to the front and back of soybean leaves, spray evenly, and do not leak. The management of soybeans after flowering, to put it bluntly, is the control of pests and diseases during flowering. At this time, if pest control is abandoned, the insects not only eat the leaves, but also put the eggs into the flower buds, which will lead not only to an increase in soybean pests, but also to a decrease in yield.

Therefore, pest control in the middle and late stages of soybean is the key to soybean production.

Once the heart-eating insect has eaten into the fruit, it cannot be controlled, so the key to controlling this pest is to know the accurate control period. For pear heartworms, peach heartworms, peach borers, etc., sexual attractants can be hung in the orchard, and the number of traps can be checked every day, generally 15 acres of orchards can be hung 1. When the number of trap worms increases dramatically, the eggs and fruits are checked every 3 days.

When the egg fruit rate reaches 1%, it can be controlled with pesticides. The types of pesticides are mainly inulinoid pesticides, such as 20% inulin, deltamethrin, 10% cypermethrin, 20% sterilization, kung fu or 21% killing 2500 3000 times liquid. If there is a leaf mite at the same time, it can be used to kill and treat both kung fu.

For peach insects, from the overwintering cocoon unearthed to the ground condensation of pupal cocoons, ground control can be carried out, the application of 25% phosphine microcapsules per mu kilogram plus 150 kg of water sprayed under the canopy, and then shallow hoeing into the soil, or with 4% digram powder, each big tree can kill the unearthed larvae, generally every 15 days and then apply 1 time. There are many beneficial insects in nature that control the occurrence of pests, mainly predators.

Such as lacewings, ladybugs, bugs, spiders, walking beetles, ants, etc. can prey on the above pests. Natural enemies of parasites. For example, red-eyed bees can parasitize a variety of insect eggs, Ji bees parasitize pear heartworms, beetle-bellied cocoon bees parasitize peach heartworms, etc.

The pears were dissected. If there are many parasitic wasps, the insect fruits should be preserved, covered with a veil, and released after the natural enemies emerge, so that they can continue to eliminate the pests. Protective measures.

When there are many natural enemies, do not apply total killing agents, and try to use other methods to prevent and control or avoid natural enemies to control pests, so as to play the role of natural enemies in controlling pests.

The key is early and middle control, before the heart-eating insects are unearthed, spray high lipid film emulsion on the ground, change the living environment, and greatly reduce the insect fruit rate.

The control methods of heart-eating insects are as follows:

1, pesticide control, mainly inulin pesticide return, such as 20% kill inulin, deltamethrin bromide, 10% cypermethrin, 20% sweeper, kung fu or 21% kill kill 2500 to 3000 times the liquid, if there are leaf mites at the same time leakage potatoes can be applied to kill sweep and kung fu treatment, for peach insects, from the overwintering cocoon unearthed to the ground knotting pupa cocoon, ground control can be carried out, apply 25% phosphine microcapsules sprayed under the canopy, and then shallow hoeing into the soil, or with 4% dimac powder, can kill the unearthed larvae, Generally, the drug is applied once every 15 days.

2. The natural enemies of heart-eating insects in nature, predatory natural enemies, such as lacewings, ladybugs, flower bugs, spiders, walking beetles, ants, etc., can prey on the above pests, parasitic natural enemies, such as red-eyed bees can parasitize a variety of insect eggs, Ji bee parasitic pear heartworm, bee-bellied cocoon bee parasitic peach heartworm, etc., the pear heartworm fruit picked up, dissected, such as parasitic bees, should be saved by Yuanyu, covered with a gauze cover, and released after the natural enemy is feathered, so that it can continue to eliminate pests.

The control methods of heart-eating insects are as follows:

1. Pharmaceutical control, mainly inulin pesticides, such as 20% kill inulin, deltamethrin, 10% cypermethrin, 20% sweeping, kung fu or 21% kill 2500 to 3000 times the liquid, if there are leaf mites at the same time, you can apply sweeping and kung fu to treat, for peach insects, from the overwintering cocoon unearthed to the ground pupa cocoon, ground control can be carried out, apply 25% phoxanthion microcapsules sprayed under the canopy, and then shallow hoeing into the soil, or with 4% dimac powder, can kill the unearthed larvae, Generally, the drug is applied once every 15 days.

2. The natural enemies of heart-eating insects in nature, predatory natural enemies, such as lacewings destroying mountains, ladybugs, flower bugs, spiders, walking beetles, ants, etc., can prey on the above pests, and parasites can be enemies in the fiber, such as red-eyed bees can parasitize a variety of insect eggs, Ji bees parasitize pear heartworms, bee-bellied cocoon bees parasitize peach heartworms, etc., to pick the pear heartworm fruit, dissect it, such as parasitic bees for a long time pure beam, the insects and fruits should be preserved, covered with a gauze cover, and released after the natural enemies are feathered, so that they can continue to eliminate pests.

: The spraying time of pear heartworm is early to mid-May, which is the breeding period of the adult pear heartworm. Seize this opportunity to spray chlorpyrifos, peach xiaoling, cyhalothrin or cyhalothrin and other pesticides on the tree, which has a good control effect on small pear adults, eggs and larvae.

Seven to ten days after the first spraying, another spray of chlorpyrifos, peach xiaoling, cyhalothrin or cyhalothrin and other pesticides can effectively control the occurrence of pear heartworm.

The spraying time of pear heartworm is in early to mid-May, because this time is the breeding period of the adult pear heartworm, and pesticides can be sprayed to kill the pear worm, eggs, and larvae.