How to kill the red spider, how to completely eliminate the red spider

It is not possible to use salt water and vinegar water, but to spray with special acaricides.

Spider mites are a common disease.

The bugs are small, less than 1 mm, round or oval, orange or reddish-brown. Because of its small size and difficulty in being found, once it is found to be harmful, the damage to flowers is often more serious. This insect pest method is to pierce the mouthparts into the flower leaves and suck the sap, so that the chlorophyll of the flowers is destroyed, the leaves appear gray and yellow spots or patches, and the leaves become yellow, or even fall off.

Spider spiders are very reproductive, and can reproduce one generation in about 5 days at the earliest. This insect prefers high temperature and arid environment, therefore, in high temperature and arid climate conditions, it reproduces rapidly and causes serious damage. Insects mostly swarm on the back of flower leaves and spin silk nets to cause damage.

In addition to crawling on their own, the spread of spider mites is also an important transmission route by wind, rain and operation.

To prevent spider mites, you should pay attention to the flowers, and when you find that the color of the flower leaves is abnormal, you should carefully check the back of the leaves. When individual leaves are damaged, insect leaves can be removed; When more leaves are damaged, spraying should be carried out as soon as possible. Commonly used pesticides include mite, dicofol, dimethoate, flower insect net, rapid kill and so on.

A flower sprayer can be prepared for raising flowers at home, and 4 drops of carite or rapid killing or flower insect net 4 drops (equivalent to 2000 times the solution) in 400 ml of water, or 8 drops of dicofol or dimethoate (equivalent to 1000 times the solution), shake well after adding the medicine, and then spray. The spraying requirements are uniform and thoughtful, especially the back of the leaf should be sprayed. When spraying, it is best to move potted flowers outdoors.

If spraying indoors, do not approach food and utensils. After each use, pour out the excess liquid and wash the sprayer with clean water.

Pepper water treatment flower spider method.

This method is also more commonly used, and the occurrence of red spider disease in flowers can be sprayed with water from boiling peppers. The effect is also very good, the raw materials are easy to take, and they are generally available at home.

But it should be noted that all these methods should be used in small amounts, not too much, step by step, spray red spiders a few more times to remove them naturally, and it is not good for flowers to be too hasty!

Tobacco leaves can also be soaked in water, master the amount, and take the spraying method to deal with it!

How to completely eradicate the red spider:

1. Pepper water spraying:

Mash 50 grams of fresh or dried chili peppers, add 20 times the water, soak for 5-6 hours, filter out the chili peppers, and spray the red spider 2-3 times.

2. Laundry detergent caustic soda spraying:

Add 15 grams of laundry detergent and 15g of 20% caustic soda, add kilograms of water, mix evenly, and spray.

3. Pepper water spraying:

Add 100 grams of Sichuan pepper to 1000 grams of water, boil 500 grams of original solution for later use, dilute 5-7 times with water when applying, and spray red spiders.

Reasons why spider mites are difficult to control:

1.The reproduction coefficient of the red spider is large, the generation is frequent, and there will be four forms of egg, young mites, nymphs, and adult mites on a leaf at the same time. There is no acaricidal drug that is highly effective and fast-acting for all four forms at the same time.

2.Spider mites are small and like to hide on the back of the leaf to suck the sap to be seen by looking closely, and by the time the front of the leaf shows symptoms, the situation is often more serious.

3.There are many generations of pests and diseases in the greenhouse production area, and the prevention needs to use insecticides frequently, and some vegetable gardens must use copper preparations to prevent canker disease, and the natural enemies of mites are killed, and a large number of pesticides are also put into the mites to obtain extremely high resistance.

4.A large number of red spider spiders spin silk cocoons to protect against pesticides and adverse environments, which is also one of the reasons why red spiders are difficult.

In the control of spider mites, in addition to selection, chemical control, but also to make full use of the natural enemies of spider mite.

The natural enemies of red spiders are now identified as mite-eating ladybugs, lacewings, phytoslow mites, small black spiders in the grass, large red mites, etc. In the case that the occurrence of red spiders is relatively rare, the use of natural predators can be effectively controlled.

If there is a concentrated outbreak of spider mite, chemical control must be used to effectively control the spider mite, otherwise the loss will increase. In order to protect natural enemies, when using acaricides, try to avoid the use of highly toxic pesticides, such as pyrethroid and organophosphorus insecticides, which were often used in the past.

This kind of insecticide can control a variety of pests at the same time, it is a broad-spectrum insecticide, although it is effective, but at the same time, it also sweeps away the natural enemies, and lays the groundwork for the future red spider to be more rampant.

Spraying chemical agents to control spider mites, generally used, 34% averofenoxil suspension 4000 times liquid. , equipped with 200 times liquid 20% mite dead net wettable powder. 6000 times liquid, equipped with 6000 times liquid isocarin emulsifiable concentrate, etc.

When controlling spider mites, spraying must be careful and thoughtful, and both sides of the leaves must be sprayed. All red spider miteicides cannot be used for a long time, and can be used alternately or compounded alternately.

The control of spider mites should be based on agricultural control, and the application of biological control and chemical control should be coordinated. In terms of strategy, we should focus on the occurrence stage of point slices and control the damage to a minimum.

1) Agricultural control.

Clean the countryside. At the end of autumn, the leaves of the field are burned or manure to reduce the overwintering places of spider mites. After the beginning of spring, before planting, remove the residual branches and leaves and weeds in the field and at the edge of the field to eliminate the source of insects that overwinter in the field.

Strengthen field management. Especially in dry weather, pay attention to irrigation and combine fertilization to promote the healthy growth of plants and enhance resistance.

2) Chemical control.

On the basis of strengthening the monitoring of pests and mites in the field, timely selection and treatment should be carried out in the stage of spot occurrence to avoid the outbreak of patches. In recent years, due to the continuous use of chemical pesticides, especially the unreasonable type, concentration and application period of pesticides, leaf mites have developed resistance, and due to a large number of natural enemies, it has become rampant. Therefore, the application of chemical pesticides should pay attention to the rotation of different types of agents, the use of compound synergist agents or some new special agents.

At present, there are many chemical agents that can be used, such as 20% metamidine emulsifiable concentrate 1000 times, 73% alkyne mite emulsifiable concentrate 1000 1500 times, 40% chrysanthemum horse emulsifiable concentrate 2000 3000 times, 25% miteicidal wettable powder 1000 1500 times, 5% fipronidine emulsifiable concentrate 1000 1200 times, bifenthrin emulsifiable concentrate 1500 times, etc.

1) Agricultural control.

Mulching cultivation can significantly reduce the damage, remove the pastoral, autumn tillage and damage its habitat environment.

2) Lime belt seedling protection.

5 7 kg of quicklime per 667 m2 is sprinkled on the edge of the ditch, at the head of the ground or between the rows of crops during the damage period to repel insect bodies and damage crop seedlings.

3) Paraacetaldehyde is used for chemical control to prepare soybean cake flour or corn flour poison bait containing about 4% of the active ingredient, and sprinkle it on the ridge of the field in the evening to trap it; or sprinkle 22 kg per 667 meters with 8% phosphorus dichlorvos granules; Or in the early morning, when the snail has not dived into the soil, spray 800 1000 times of phosphorus, dichlorvos or copper sulfate.

Try to drive a wedge between him and Megatron.

For now, spider mites don't bite. This is to distinguish whether it is a red spider or a spider, these two are different.

The outbreak of red spider mites and how to control insect pests.

1. Artificial prevention and control of pre-winter peel eggs hatching and centralized incineration, and then the trunk is coated with white (lemonade) to kill most of the winter eggs.

2. Agricultural rules and habits for the prevention and control of red spider overwintering egg hatching and breeding weeds after hatching, the ground is to remove weeds in early spring and keep the winter egg hatching period free of weeds, so red spider dies because it can not find food.

3. Body control can be applied to the tree before jujube germination and red spider injury (about the end of April), the application of non-toxic non-sticky shellac should be applied to the trunk of a closed viscose ring, the width of the ring is about 1 cm, about 2 months to apply again, the tree can prevent the red spider from transferring to injury.

4. There are many species of red spiders in the field of biological control, according to the survey, the population of Chinese grass dragonfly is more important, the prey of Chinese grass dragonfly is larger, and the protection and increase of the number of natural enemies can improve the control effect of red spider.