When the temperature rises, the occurrence of wheat aphids and red spiders increases, how can we eff

Targeted pesticide spraying should be carried out before the temperature rises, and some pesticides to control the spread of aphids and red spiders can be purchased and sprayed in proportion.

I think that due to the increase in temperature, the occurrence of wheat aphids and red spiders has increased, and if we want to better and effectively control them, we must actively take medical measures to eliminate these harmful substances.

It can be sprinkled with phosphine before tillage, and the use of thiamethoxam and imidacloprid on seeds for seed dressing control is also good, and pests can be sprinkled with phosphine, thiamethoxam, and diaziphos.

First, the wheat field has aphid control technology: x0d x0a1 agricultural control: a

selection of aphid-resistant and tolerant varieties; b.Rake in early spring to remove weeds. X0D X0A2 Chemical Control:

Check the insect situation, after the winter wheat jointing and spring wheat emerge, randomly take 50 100 plants to the wheat field every 3 5 days (the number of wheat aphids can be reduced when the amount of wheat aphids is large), investigate the number of aphids and natural enemies, when the number of 100 plants (stems) aphids exceeds 500, and the ratio of natural enemy units to aphids is more than 1 100, it is necessary to control them. \x0d\x0aa.Seed treatment.

In the endemic area of wheat yellow dwarf disease, seed treatment can be used to treat aphids and prevent diseases. \x0d\x0ab.Field spraying.

Dimethoate powder can be used, kilograms per mu. Spray with 50% phoxanthion EC 2000 times, or use anti-aphid wettable powder 4000 times. In the panicle stage of the control should be considered to take into account wheat rust and powdery mildew and armyworm, wheat aphid, etc., with 6 grams of rust per mu, 6 grams of aphid resistance, 2 grams of larvalurium urea (all three refer to the active ingredients) mixed, the control effect of the above diseases and insects is more than 85% 90%.

Agricultural control x0d x0a irrigation and pest control. Irrigation during the incubation period of the spider mites can cause the worms to die by sticking to the surface of the ground by muddy water. Before irrigation, sweep the wheat plants to make the red spider fake dead and fall to the ground, and then release the water, which has a better effect.

First, it is necessary to apply plantar fertilizer to ensure that the seedlings are strong and strong, and to increase the amount of phosphorus and potassium fertilizer to ensure that the fertilizer is not removed in the later stage, and to enhance the ability of wheat itself to resist diseases and pests. Second, we should carry out field weeding in a timely manner, and for the plots with poor chemical weeding effect, we should take manual weeding methods in time to eradicate weeds and effectively reduce their damage. Practice has proved that wheat spider mites are difficult to occur in wheat fields where there is no drought in the field, there are few weeds, and wheat grows well.

During the inspection, pay attention not to turn the wheat seedlings that need to be observed to prevent the insects from being frightened and falling. The prevention and control methods are mainly pick-and-treat, that is, insect control and key prevention and control of key plots, which can not only reduce the use of pesticides and reduce the cost of prevention and control, but also improve the prevention and control effect. Wheat is sprayed at noon during the jointing period, and the temperature is higher after wheat heading, and the spraying effect is best before 10 o'clock and after 16 o'clock.

50 75 kg of water can be added with an artificial knapsack sprayer, and the spraying of the agent is required to be uniform and thoughtful, and the speed is uniform. If you use a tractor with a vehicle-mounted sprayer, you should spray at a constant speed in the second gear to ensure that the back and front of the leaf can be sprayed. X0D X0A has passed many years of field application tests, and the best agent for the control of red spider is 5000 6000 times of insect mite, and the control effect can reach more than 90%; followed by 15% pyridoxin EC 2000 3000 times, avermectin 3000 times, 20% mite wettable powder 3000 4000 times, 20% chlorophyllin (mite + phosphine) EC 3000 4000 times, the control effect of more than 80%; The worst control effect is dimethoate, only about 60%.

Introduction: Green plants are also very common in life, especially in rural areas, many farmers will plant crops to increase their annual living income, and where there are crops, they can not avoid being attacked by pests, and wheat red spider is a very common pest, so how to solve this kind of pests in life? <>

The most effective way to prevent pests is to prevent pests, everything has its own natural enemies, so for wheat red spiders, its natural enemies are products such as fertilizers invented by people. The body of the spider spider is very small, but its vitality is very strong, it is easy to be overlooked when it first erodes crops, its fecundity is strong, so even in the harsh winter, it can erode wheat, causing wheat to grow and develop very slowly. When the weather becomes cold, red spiders will breed in large numbers, and more and more red spiders will also invade crops, resulting in reduced crop yields and affecting farmers' incomes, so in order to prevent this kind of thing from happening, farmers often use green belt fertilizer biological control to inhibit the growth and reproduction of red spiders.

Spider mites are small in number at the beginning, and it is difficult to be valued by farmers, but with the change of weather, they will also have a strong reproductive ability, when the weather warms, it is out of control, and the number will gradually increase, at this time it is relatively late to use chemical fertilizers to prevent and control, farmers can spray some pesticides to kill them, in the early days you can use chemical fertilizers, but if the situation is not controlled, beyond people's imagination, you can use pesticides. <>

In order to prevent wheat red spider from invading crops on a large scale and prevent it from multiplying in large numbers, it is necessary for farmers to often inspect the growth of crops when planting wheat.

If there is such a pest, we can spray it directly, because it will be very convenient and can also keep other pests away.

If you want to solve it, you must spray some pesticides, and we definitely need to configure some pesticides to spray together, you can go to the place where pesticides are sold to buy some special pesticides, and then you can ** this kind of red spider pests and diseases.

In fact, you can choose to spray pesticides to kill these pests.

Find an area where spider mites are infested, so that it can have a ** effect. Spider mites are a pest that likes to congregate, and they usually have a colony, where they often ovulate and then run to the wheat to wreak havoc, so we need to find out where they ovulate. Once we have found the location of ovulation, we can use pesticides to control it, or we can bury it deep in the soil to crush the eggs of those spider mites that have not hatched.

For some weeds on the edge of the field, it is easy to become the habitat of red spiders, so we should focus on removing these weeds, you can spray with glyphosate to kill weeds, and then we can burn these weeds with fire, for red spiders if they ovulate in the weeds, or ovulate under the weeds, these eggs can be killed well by fire. Weeds store a lot of insects, and if you burn the weeds, you will also burn some of the insects to death. <>

Prevention in advance, generally speaking, when the eggs are not adults, they should be killed, for example, deep ploughing can be carried out, and some eggs can be buried, which can effectively reduce the source of insects. You can also do some crop rotation, for example, this year we plant wheat, and in the second year we should plant some peanuts, potatoes, etc., which can effectively reduce the insect pest of red spiders. <>

Use chemical pesticides for effective control. This is a commonly used method and one that many wheat growers often use. After all, there are many pesticides that are sprayed with pesticides to save time and effort to deal with red spiders, and as long as they are blended well, then they can be sprayed on a large scale.

There are many pesticides for killing spider mites, such as this avermectin is a good drug to kill spider mite, and avermectin is a long-acting drug, which can be effectively prevented with one use.

You can spray pesticides in advance for prevention, or to understand the growth of wheat, or to learn the management skills to ensure the moisture in the field, or you can choose the chemical agent of the red spider.

According to local conditions, reasonable crop rotation and stubble, weeds in the field are removed, and deep ploughing and stubble elimination are carried out after wheat harvest. Watering a wheat field can vibrate the wheat plants during watering, and the insects will drown in the water.

For farmers, planting is really annoying these wheat red spiders, and the control can be started from several aspects, such as the introduction of natural enemies. When there are too many antelopes, you can raise two wolves, or raise some lions, tigers because they have natural enemies that allow them to achieve a balanced role, and the same is true for red spiders, we can raise some of its natural enemies, such as this ladybug, then you can try. If there are a large number of natural predators, then these red spiders will be eaten up if they have no place to hide, so you might as well consider this method, but the disadvantage is that it is not easy to control.

We can also choose to maintain a certain amount of moisture in our wheat fields, so that it can also play a certain role in the prevention and control of red spiders during the incubation period. Generally speaking, it is rare to find these spider mites in rice, because rice has a certain water level, which can prevent a lot of pests, you may wish to consider such a method, and you should have more water to prevent them during their active period. <>

In fact, for farmers, the easiest thing is to spray pesticides, and many of us choose this chemical. This method is convenient and fast, and it is also one of the first control methods that most growers choose first. After all, red spiders are very sensitive to pesticides, and spraying pesticides can well prevent the occurrence and spread of these red spiders.

Among the commonly used drugs is avermectin, which can kill spider mites very well, so you can choose to spray the agent from 10 am to 3 pm. If there is too much insect infestation, you can also spray it again every two or three days. <>

Enhance the growth and resistance of wheat seedlings. Do a good job in the corresponding fertilizer and water management, remove the corresponding weeds, so that wheat seedlings can grow in junior high school, so that it can also effectively reduce the harm of red spiders, so planting wheat should do a good job of weeding, fertilization, etc., not careless, so as not to cause losses.

At the very beginning, if you find red spiders, you should prepare some natural enemies, prepare snakes, frogs, and put them in the planting environment, and you should also choose some pesticides with strong efficacy, spraying them on the roots can kill red spiders.

You can use some pesticides to prevent in advance, or to ensure the moisture of the soil, or to learn management skills, or to prevent in advance, and pay attention to frequent watering, so that you can resist spider mites.

It is necessary to spray pesticides in advance, to control the density of planting, but also to pay attention to timely watering, timely fertilization, and also pay attention to light intensity.

Pesticides can be used for control, and the moisture of wheat must be ensured, and attention should also be paid to observation, you can choose a more suitable type of pesticide, and pay attention to the spread of various germs.

Summary. Because the body of the wheat field red spider is small and easy to be ignored, people generally believe that there is no need to prevent and control it before the year, so it is easy to cause the damage of the red spider and the yellowing of the leaves, which forms a hidden danger for the safe wintering of the wheat field. Therefore, I will introduce the harmful characteristics of wheat field red spider and several effective pesticide formulas as follows, hoping to help farmers.

The temperature of the red spider in the wheat field will drop in a few days and there will be rain, should it be controlled?

Because the body of the red spider in the wheat field is small and easy to be ignored, people generally believe that there is no need to prevent and control it before the year, so it is easy to cause the damage of the red spider and the yellowing of the leaves, which is a hidden danger for the safety of the wheat field. Therefore, I will introduce the harmful characteristics of wheat field red spider and several effective pesticide formulas as follows, hoping to help farmers.

Chemical control % avididoxalin EC 1000 times which nuclear spray, commonly used formula, fast-acting He slippery Li patting good % averospirofen suspension 1500 times spray, insect eggs and killing, long duration % bifenthialoprid suspension 10 ml barrel, good fast-acting % cyanochloride chlorpyrifosis EC 25 grams barrel, good fast-acting.

There will be rain tomorrow and the day after tomorrow, and the temperature will be 3-10 degrees.

Do not apply medicine on rainy days.

There will be rain tomorrow and the day after tomorrow, and the temperature will be 3-10 degrees, will it have an impact on the spider mite.

There is no impact, wait for the rain to stop before fighting.