How do underground pests breed sweet potatoes when underground pests eat them, so how do underground

Sweet potato underground pest control can be used to rotate stubble, stubble is due to some underground pests only eat sweet potatoes, do not eat other crops, his eggs are likely to only damage or parasitize on sweet potatoes, without sweet potatoes, can not survive. In addition to the following two chemical methods, the following two chemical methods can be used to control underground pests, such as water injection and other agricultural and animal husbandry measures, such as ploughing and ploughing. How sweet potato pests grow in the ground can be said by some to come from organic chemical farm fertilizers, seedling belts, and even crop stubble.

In fact, sweet potato underground pests not only harm sweet potatoes, but also <>

If there are underground pests in the field, you will harm which underground pests you plant. In the final analysis, the key to underground pests is to like to eat the leaves and stems of green plants, and in the eyes of underground pests, they do not distinguish between sweet potatoes or potatoes, and eat whatever they have, and do not distinguish between the good and bad tastes and choose the tender ones to eat. Underground pests generally include grubs, mole crickets, needleworms, ground tigers, etc.!

For underground pest control should be prevented in advance, our side generally uses chlorpyrifos tablets or phosphine to carry out moth prevention before planting, and after the occurrence of pests and diseases in the middle and late stages, on the one hand, it can be controlled by root chlorpyrifos, but I think it is inconvenient and not easy to remediate, <>

You can also choose chlorpyrifos and fried bran and other compound fertilizers to apply insect control, on the other hand, for the land where grubs are more serious, you can spray thiamethoxam and cypermethrin at dusk during the nymph-prone period to eliminate nymphs! The source of insects should be strictly killed: every year when pre-seedling, planting and feeling, it is necessary to eliminate diseased potato pieces, diseased seedlings and diseased plant residues, and concentrate on drying and burning or boiling for concentrate feed.

Sick potato skins, potato washing water, concentrate feed sediment, diseased soil, and diseased seedling soil should not be used as rotting raw materials, <>

If it is used as fertilizer, it should be fermented at a high temperature above 50. Promote crop rotation to avoid continuous cropping: Crop rotation should be implemented in seriously diseased land, sweet potatoes and wheat, bud rice, rice, cotton wool, and tobacco are rotated with each other, and sweet potatoes are not planted every 3 years, which can basically manipulate the damage of stem nematode disease.

If the soil is not loose enough, it is likely to not grow very large, and the ventilation capacity of the loose soil is more suitable, and it can also facilitate the drainage pipes, which has a lot of help for our future management methods.

Mainly because of the fungal spread of pests and diseases caused by continuous cropping of plants, they are generally hidden in the soil, and they begin to be active after the temperature rises.

It may be because the soil moisture content is too high, which causes the rhizomes of sweet potatoes to rot and cause insects.

This is due to the fact that there is not much disinfection and sterilization done in the process of growing sweet potatoes, which leads to the presence of some bacteria in the soil, which leads to the breeding of insect pests.

1. The organic fertilizer is fully decomposed to eliminate pests.

Farmers must be fully decomposed according to the requirements when decomposing organic manure, and only after high temperature treatment can the eggs and germs in the manure be killed together, so as to reduce the pests and diseases caused by organic fertilizer. Organic fertilizer can also cause phenomenon such as seedling burning if it is not fully decomposed, which is not conducive to the growth of crops.

2. Chemical control methods.

Chemical control methods are mainly divided into soil disinfection, seed dressing, root irrigation and other methods.

First of all, you can turn the soil deeply, and then rotate the operation to manage the growth and development period of sweet potatoes, and usually apply fertilizer and watering reasonably, so that you can control underground pests.

When planting, the soil needs to be disinfected and sterilized first, and then the soil is cultivated, so as to prevent some underground pests.

Common pests in sweet potato fields generally have mole crickets, grubs, needleworms, root maggots, ground tigers and other underground pests, from the seedling stage, until the sweet potato harvest period, will face the harm of underground pests, either will cause lack of seedlings and broken ridges, or will harm the underground roots, if the pests and diseases are not stopped, will cause the quality of sweet potatoes to be greatly reduced, and the yield is even greatly reduced, because the resistance of underground pests is increasing year by year, and even the pesticides used before, now do not increase the dosage, are not ideal for the control effect of pests. So, how to quickly kill sweet potato underground pests?

After plowing the land in the sweet potato field, before planting sweet potatoes, you can use cornmeal, soybean cake powder, put it in the pot to fry the fragrance, and then mix it with 100 times of the liquid of phosphine acetamiprid, after stirring, evenly sprinkle on the road surface at dusk when there is a hat in the rainy mountain, the underground pests smell the fragrance, they will come out to feed, as long as they eat the insect pests of the poisonous bait, they will die and whimper. This method is very effective before planting sweet potatoes and can greatly reduce the total number of underground pests.

200 times of thiamfenoxam + 200 times of chlorantraniliprole, mix the bait, spread it evenly, carry out stirring with a micro-cultivator, and then plant sweet potatoes, which can prevent and control most of the insect pests during the overall growth period of sweet potatoes, and chlorantraniliprole 1000 times liquid + thiamethoxam 1000 times liquid, after mixing and symmetry, spray sweet potato seedlings evenly, and the drug will be transmitted to the whole plant along the leaves, and there will be a certain control effect on insect pests such as beetle larvae grubs, ground tigers, and small ground tigers hidden in the ground.

You can use 500 times of thiamethoxam + 1000 times of deltamethrin to spray evenly when the soil is subsoiled, which can control a variety of underground pests, and the effective period is still very long.

Li Laohu is a very cunning underground pest, hiding in the soil during the day, only to drill out at night to gnaw a part of the ground, often close to the ground above two or three centimeters of the area, the plant gnawed off, resulting in the occurrence of dead seedlings and broken ridges, at this time the rapeseed cake can be fried out of the fragrance and ground and reserved, the crystallized trichlorfon is melted with warm boiled water, with 500 times the liquid, and the rapeseed cake that is fried out of the fragrance is stirred, in the dusk, evenly sprinkled in the periphery of the sweet potato seedlings, as long as the tiger smells the smell, it will go out to take it at night, It has the effect of exterminating ground tigers.

Take 5 kg of the waste solution of pickled sweet, garlic and vinegar, add 200 grams of crystalline trichlorfon to dissolve, and place the insect control solution in a small basin. At dusk, placed in the chest-high area of the field, the ground tiger nymphs will fly up when they smell the smell at night, and they can spray some ground tiger nymphs.

When underground pests are more rampant, use irrigation water to irrigate, and apply matrine aqueous agent along the water, 700 1000 ml per mu, which can effectively control most of the sweet potato underground pests. The above 6 points should be comprehensively applied and flexibly mastered, which is very effective in preventing underground pests in sweet potato fields.

Physical control methods can be used, chemical control methods can also be used, some pesticides can be used, and sweet potatoes can also be irrigated.

If you want to effectively control underground pests of sweet potatoes, you must do a good job of pest control in advance, spray some relevant pesticides appropriately, and also properly control weeds.

For the treatment of these underground pests, physical control methods can be used. This method is generally started in early spring, mainly for the eggs in the soil, every year at the beginning of winter, the soil should be deeply cultivated, the eggs can be turned out, and it will be frozen to death at a low temperature. For the pests brought by farm fertilizer, high temperature insecticidal eggs can be used, and the rotting treatment of farm fertilizer must be in place before fertilization.

I think you can use a solution made of potassium hydroxide mixed with superphosphate and spray it on the ground, and there will be absolutely no pests.

During the cultivation process, if it is found that the sweet potato has suffered from underground pests, it can be reduced by irrigating the roots to further aggravate the pest. Roots can be irrigated with superphosphate solution or plant ash leach, or tobacco leaves can be crushed in water, and the leaching solution after soaking for 24 hours, as well as Beauveria bassiana solution. These root irrigation methods will not cause pesticide residues, which is safe for the human body, and remains a safe and pollution-free way to control underground pests of sweet potatoes. ”

Roots can be irrigated with plant ash or calcium phosphate solution. Keep the roots in a safe state to prevent pests from eating the roots.

The soil can be disinfected and sterilized, which can solve the problem of underground cold waves, which can help sweet potatoes grow better.

Choose disease-resistant varieties and control them from the roots. After harvesting, wood chips are mixed with sulfur and fumigated in the storage cellar on fire. In order to produce sweet potato acetone, inhibit the germination of black spot spores and reduce the occurrence of diseases.

Soaking with 50% multi-step jin wettable powder and 500 times the amount of water before transplanting can effectively prevent and control the occurrence of diseases.

Pesticides can be sprayed because pesticides can kill some pests and make the plants grow better.

The two methods are to use Spray Lesben and drizzle tea bran. In this way, it can effectively kill pests, and it should also be supplemented with high-quality organic fertilizer in time to protect the underground potato pieces and promote the expansion of potato pieces.

There are two methods of chemical insecticide and biological insecticide, which are also the two main treatment methods in the management of the agricultural planting industry.

First of all, it is necessary to use chemical insecticide, you can choose two pesticides, spray Lesben and tea bran liquid for insecticide, and you must water it in time after killing the insect.

The two methods of poisoning are spraying Xerox and drizzling tea bran. Both of these agents are effective in harming underground pests.

Chemical control: use 90% dichloromethane solution 800 times, 50% photophosphorous emulsion solution 500 times, 8 10 days, 2 3 times continuous use. Mix fine sand with 50% octyl thiophos cream and 10x water to form toxic soil.

Scatter the soil along the ridge, then turn the shallow hoe to treat the soil, before the land preparation, 5% of the phosphine particles can be evenly spread on the ground, and then use a shallow hoe to evenly disperse the agent in the soil, which can kill underground pests.

However, with the use of high concentrations and high doses of pesticides, the contamination is very serious, and the pesticide residues are very high, so it is not recommended.

Crop rotation. Paddy fields are rotated with water and drought, with early rice planting, autumn sweet potato planting or late rice planting and winter sweet potato. Or grow aquatic vegetables in spring and summer, and sweet potatoes in autumn and winter.

Tissue culture detoxification seedling breeding method was adopted.

Lights kill insects. Every 20,000 square meters, install a frequency-vibration insect trap lamp.

Integrated control measures for underground pests such as small weevils, ground tigers, mole crickets, needleworms, leaf beetles, etc. After colonization, spray 500 times probiotic solution every 15 days; 2 3 months after planting, drench Beauveria bassiana or tobacco leaf (tobacco stem) water once; The time of each showering should be staggered by 15 days; 15 20 small weevil traps per 667 square meters.

Stem borer control. After planting, spray azadirachtin or rotenone once 20 days to control sweet potato stem borer, spray once every 10 days, and spray 2 3 times continuously.

Sweet potatoes are susceptible to underground pests, forming insect passages, making sweet potatoes rot, reducing quality, and being inedible in serious cases, resulting in reduced yield and loss of harvest. In production, the following methods can be taken in time to prevent poisoning and improve the yield and quality. 1.

During the rapid expansion of sweet potatoes, the roots are drenched once every 10 15 days with 25 30 times superphosphate mixed with dry and pure plant ash to leach the clarifying solution. Or 15 20 times tobacco leaf leaching clarifier, etc., 2 3 times in a row, each time about 5 6 kg per square meter of soil is appropriate. Or the root is drenched with 40 50 times tea bran aqueous solution, every 7 10 days, 2 3 times in a row, each time 10 15 kg per square meter.

Those who sell rat poison buy some and keep the powder scattered in the ground.