What are the coping skills when planting soybeans and encountering underground pests?

In the process of soybean planting, common and main insect pests are heartworms, red spiders, thrips, aphids, etc.

The main diseases are soybean root rot, gray spot, downy mildew and so on.

Pest control. 1. (Heartworm) mainly harms bean pods and bean grains, often eats bean pods when they are larvae, and then begins to eat beans from the joint of the pods.

Control) release red-eyed bees during the peak period of insect eggs, and use pesticides such as (anti-killing emulsifiable concentrate) or 20% sulfur and phosphorus powder in the early stage of insect disease control, and the dosage is adjusted according to the actual situation and product instructions.

2. (Red spider) can occur in the whole growth period of soybean, mainly harming the leaves, with adult mites gathering on the back of the leaves to form a web and suck the leaf juice, thus causing defoliation or bare stalks, and even the death of the whole plant in severe cases.

Control) application of foot fertilizer, increase phosphorus and potassium fertilizer, and remove weeds in the field at the same time, can relatively reduce the incidence rate.

At the beginning of soybean leaf rolling, it can be controlled with agents such as (73% 3000 times of acaricide) and sprayed 2-3 times.

3. (Aphids) mainly harm soybean young branches and leaves (sucking the sap of branches and leaves), so that soybean stems and leaves shrink, branches and pods are reduced, and root development is stunted.

Control) in the seedling stage, before the outbreak of aphids, the selection of (40% grams of aphid emulsifiable concentrate 800 times liquid) and other agents for control, pay attention to aphids are more likely to produce resistance, should be used in rotation.

4. (Thrips) mainly harm leaves, flowers, and tender pods, and puncture and suck sap with larvae and adult sucking mouthparts.

Control) in the soybean 2-3 compound leaf period, the selection of (25% spinomycin suspension) and other agents for control.

Disease control. 1. (Root rot) mainly occurs in soybean roots, resulting in underdeveloped root system, and in severe cases, the whole plant can die.

Prevention and control) use (50% carbendazim wettable powder 800 times liquid) or (70% oxalfen wettable powder 1000-2000 times liquid) and other agents into the root watering.

2. (Downy mildew) is a disease caused by fungi, which causes early defoliation, leaf withering, and mildew rot in severe cases.

Prevention and control) use carbendazim, chlorothalonil and other agents for spraying control.

3. (Gray spot disease), also known as spot disease and brown spot disease, mainly harms leaves, stems and pods, and can cause soybean seedlings to die in severe cases.

Prevention and control) in the peak period of pod formation, use (50% thiophanate-methyl wettable powder 600 times liquid) and other agents for prevention and control.

Terminal prevention and control. 1. Choose disease-resistant and coated seeds.

2. Reasonable crop rotation, preferably water and drought rotation, to avoid continuous cropping and heavy cropping.

3. Deep soil ploughing, so as to increase the mortality rate of overwintering insects, reduce the source base of overwintering insects, and accelerate the decay and decomposition of diseased residues.

4. Reasonable dense planting, the diseased branches, leaves, and plants should be removed in time and burned, and at the same time, pesticides or quicklime should be applied to the diseased holes.

5. Appropriately increase phosphorus and potassium fertilizers.

6. Mulching cultivation can effectively prevent and control the aboveground plants harmed by pathogens in the soil, as well as deep furrow and high furrow cultivation to avoid water accumulation in rainy days.

Planting soybeans will encounter underground pests, to deal with these underground pests is skillful, we have to choose disease-resistant, coated seeds, and then deep ploughing the land, increase the mortality of overwintering insects, increase phosphorus and potassium fertilizer, and have been infected in time to remove branches, leaves, plants, and concentrate on burning.

First of all, these soybeans should be insecticide, you can spray some pesticides, and then apply some fertilizer, and at the same time, you should also water regularly to ensure that the sun is sufficient, to ensure the fertility of the soil and the health of the soil.

Some pesticides can be used in advance to prevent it, and you can also find some natural enemies for these pests, which can also prevent damage, and you can also choose some good seeds, which can also be prevented.

The harmful range of soybean gray spot disease is relatively large, and the seeds, leaves, stems, and pods of soybean are infected with gray spot disease. After soybean gray spot disease occurs in the field, it is necessary to administer medicine in time to prevent it. This content only talks about prevention methods, which farmers are more interested in, but the prevention measures are not introduced here, and all the pests and diseases below are the same.

The available agents are leukophanate, carbendazim, thiophanate, jade heart, jade heart, alcohol-free, etc. According to the local resistance, <>

Soybean anthracnose is a common disease, from the seedling to the harvest will be basically harmed, the main damage parts of the stem, leaves, pods, etc., if the local rainy season continues, the occurrence of anthrax will be relatively serious. After anthrax occurs in the field, buy fungicides in time to prevent it, the sooner the better. The drugs that can be used are amine, bromonitrile, metryptamine, carbendazim, etc.

Depending on the severity of the disease and the problem of resistance, it can be increased or decreased appropriately or sprayed several times. Soybean purpura is also a relatively common disease, widely distributed, basically occurs in the north and south soybean planting areas, mainly harms the pods and seeds, but in the planting process, the leaves and stems of soybeans are also infected, seriously affecting the yield and quality of soybeans.

Prevention and ** soy purpura should also be effective when it first occurs. You can choose phenylethylamine, thiophanate, carbendazim, etc., or you can use the aforementioned agents to prevent it in advance. Because once the seeds and pods are infected, it is more difficult to return to their normal state, and depending on the severity of what happens in the field, it can be prevented multiple times.

In the process of soybean planting, we must strengthen field management in order to obtain high-yield, stable and high-quality soybeans. The full return of straw, the extreme frequency of severe weather, and in general, the occurrence of pests and diseases through the field is more serious. Soybean underground pests, ground pests, soybean underground diseases, ground diseases, the occurrence is also more serious, and the resistance is relatively large.

Therefore, soybean pests and diseases have threatened our planting effect, and farmers must pay attention to prevention and control, and cannot invest generously.

Our different regions have different planting structures and different insect pests. In particular, drought is very harmful to underground pests in the field, and the impact of straw on the field and warm winter is also great, and the underground pests and insects are safe to spend the winter, and the underground pests are more serious to produce underground pests. There are mainly earthworms, needleworms, earthworms, etc.

For underground root crops, we can choose seed coatings to avoid his danger. You can choose salad dressings, including imidacloprid, thiazide and other seed coatings, which last longer, and farmers choose chlorpyrifos granules and phosphine granules spraying only for a temporary effect, and can not achieve long-term results. Where conditions permit, it is possible to use his characteristics for light hunting and biobait hunting.

We should spray some pesticides to prevent pests and diseases in advance, so that it will be fine, and the yield will become exceptionally good.

When planting soybeans and encountering insect pests, we should master the skill that as soon as we find that soybeans are diseased, we must first buy some pesticides, and we must deal with these pests in time to prevent it from continuing to develop.

For viral diseases, can be prevented in advance, can not be prevented in advance, wait until the onset of the disease, timely prevention and control, the earlier the prevention and control caused by the harm less, there are farmers reaction, in the process of prevention and control, due to the increase of local resistance, the effect is not good, this situation can be added to some silicone additives, to improve the control effect of fungicides.

Pests appear in the soybean fields grown at home, and it is necessary to take timely control measures to prevent the spread of pests. Here's how to prevent it:

1.Fertilization measures: apply appropriate chemical fertilizer to soybeans to enhance the ability and immunity of soybeans to resist diseases and insects.

2.Biological control: the use of soybean pests natural enemies for control. For example, by using natural enemies such as parasitic wasps and sand ants, the parasitic bees are placed next to the middle sail of the pod, and after the parasitic maggots hatch in the pods, soybean pests can be eliminated in advance to achieve the purpose of biological control.

3.Chemical control: such as the regular use of "dichlorvos", deltamethrin and other pesticides for safe and scientific insecticide.

4.Physical control: If some ash, lime and soil burial are placed on the ground, the pests can be smoked to death or forced to stay away from the soil to achieve the purpose of physical control.

In short, in order to prevent and control insect pests in soybean fields, it is necessary to adopt a variety of methods, using fertilization, biological control, chemical control, physical control and other measures to comprehensively control and solve the problem, so as to ensure the healthy growth and harvest of soybeans.

Of course, it is spraying the corresponding pesticides, when planting crops in a large area, pests and diseases may break out intensively, and it is very important to observe at any time to find signs of pests and diseases and take measures to deal with them immediately.

First of all, you need to observe what disease or pest soybeans are affected by, and then go to the local pesticide store to buy the corresponding pest and disease drugs, and put them in the spraying machine to spray the soybeans.

After the occurrence of anthracnose in the soybean field, the fungicide is purchased in time for prevention and control, the sooner the better, the available agents are prochloraz, bromonitrile, methyl tobuzin, carbendazim, etc., gray spot disease can be sprayed with chlorothalonil, carbendazim, thiophanate-methyl, heartworms can be selected with pesticides such as chloride emulsifiable concentrate or thiophos powder for prevention and control, and at the beginning of soybean leaf curling, it can be controlled with acaricide.

A common disease in soybean cultivation.

1. Soybean anthracnose:Anthrax is one of the more common diseases, from the emergence of seedlings to before harvest, can basically be harmed, mainly affecting the growth of stems, leaves, pods, etc., it is observed that if there is continuous rainy weather in the local area, it will aggravate the disease.

2. Soybean gray spot disease:The range of damage is relatively large, from the seeds, leaves, stems of soybeans, and the pods in the late growth stage, will be infected with gray spot disease.

The main insect pest of cultivated soybeans.

1. Heartworms:It mainly harms the bean pods and bean grains, and often eats the bean pods when they are larvae, and then begins to eat the beans from the seam of the bean pod.

2. Red spider:It can occur in the whole growth period of soybeans, mainly harming the leaves, and the adult mites gather on the back of the leaves to form a network of filaments and suck the leaf juice, thus causing defoliation or bare stalks, and even the whole plant dies in severe cases.

Soybean pest control.

1. Soybean anthracnose:When anthracnose occurs in the field, buy fungicides in time for prevention and control, the sooner the better, the available agents are prochloraz, bromonitrile, methyl tobuzin, carbendazim zhaoli, etc., according to the severity of the disease and plant resistance, it can be sprayed several times appropriately.

2. Soybean gray spot disease:After the occurrence of gray spot disease in soybeans, it is necessary to spray in time**, and the available agents are chlorothalonil, carbendazim, thiophanate-methyl, oxime tebuconazole, etc., according to the local resistance, reasonable choice.

3. Heart-eating insects:During the peak period of insect eggs, the red-eyed wasp is released, and pesticides such as anticidal quietly dead emulsifiable concentrate or sulfur phosphorus powder are selected for prevention and control in the early stage of the disease, and the dosage is adjusted according to the actual situation and product instructions.

4. Red spider:Apply plantar fertilizer, increase phosphorus and potassium fertilizer, and remove weeds in the field at the same time, which can relatively reduce the incidence.

Some bean seedlings will have the name of dead tree, black root disease, etc., its harmful force is greater, usually a large area of the root and bottom root of the seedling have reddish-brown sunken markings, the cortex of the stem will crack, similar to the state of ulcers, the markings have no color at the beginning, but slowly turn brown. Bean seedlings will have slow development, short body, etc.

The stems of the plants will shrink and the leaves will be gnawed by insects. Therefore, pests should be removed in time, or pesticides should be sprayed at the time of planting.

There will be many pests underground, which will harm the root system of soybeans, cause nutrient and water transport to be blocked, affect the growth of the whole soybean plant, and cause lack of seedlings, broken ridges, dead seedlings, etc. Common underground pests include ground tigers, grubs, needleworms, mole crickets, etc.

The injured roots become thicker, brown or longitudinally cracked, deformed and proliferated, and after the larvae pupate, the mildly damaged soybean root wounds healed, and the plants resumed growth, but the root nodules were small and few, the parietal leaves were yellow, the pods were few, the yield decreased, and the severely damaged soybeans gradually died.

There are many farmers who grow soybeans in northern China, and some problems such as pests and diseases, lack of water and other problems are often found in the soybean process, so this will lead to a decrease in the number of soybean pods or very few pods when soybeans are set. So what problems do we need to pay attention to in the usual soybean cultivation work? Let's take a look.

First, the choice of varieties.

Improper selection of varieties will also lead to soybeans not setting pods, and it is possible that poor quality seeds are bought. The management work in the early stage is very good, but the soybeans just don't set pods. There is also a situation where the purchased seeds are not suitable for local cultivation, such as varieties suitable for planting in the south, and it is not suitable for planting in the north.

Solution: Buy good seeds that are suitable for local planting.

2. Improper water and fertilizer.

Improper water and fertilizer also have an impact on pod formation. If the ground is too dry or there is water, it will affect the pods. If there is too much fertilizer, fertilizer damage will occur.

If there is less fertilizer and poor nutrition, it will affect the pods. Solution: Plant soybeans, water and fertilizer management should be appropriate.

When it's time to water, you should water it in time. There is water stored in the ground, and it must be discharged in time. When it's time to apply fertilizer, apply fertilizer.

When the nutrition is sufficient, soybeans can grow and pod normally.

3. Pest control.

Soybeans can also be damaged by pests and diseases. When the pest infestation is severe, it is not conducive to the growth of soybeans and will also affect pod formation. For example, downy mildew and so on, these can cause soybeans not to set pods.

Solution: Pest and disease prevention should be done in advance, the prevention effect is better, and the harm of pests and diseases is minimized.

Fourth, the temperature is improper.

Temperature also has an effect on soybean pods. When soybeans are pod-set, if the temperature is too high or too low, it will affect the soybean pod-setting. For example, if the temperature is already higher than 35 degrees, for example, the temperature is lower than 10 degrees, which is not conducive to soybean pods.

Solution: If the temperature is too high, some cooling measures should be taken. If the temperature is too low, you can spray some foliar fertilizer to alleviate the situation.

Fifth, the planting is too thick.

Soybean planting is too thick, and the plants compete for nutrients, resulting in soybean malnutrition, which is not conducive to pod formation. In the middle and late stages, there is no ventilation between the plants, and there will be few pods.