The sunflowers I planted have a lot of flying insects in the nutrient soil, how can I kill them?

There is no fermentation and rotting with nutrient soil, and there are more pests and diseases in the soil, and there are more pests and diseases in the animal manure, crop straw, and scraps, and if they are directly applied to the soil, they will spread, breed, and hatch in the soil, endangering the growth of crops, and outbreaks of pests and diseases.

People who have been raising flowers for a long time often encounter the situation of potting insects, and I will briefly introduce a few methods below:

1. Precautionary Act. Before potting the potted flowers, put the potting soil into a larger old food bag, pour boiling water, tie the bag tightly, expose it to the sun for a day, and then spread it out and dry it to use, which can play a role in killing insect eggs.

2. Chemical method. Long-term dampness in the potting soil causes insect pests, insecticides can be purchased, sprayed to kill insects, and indoor potted plants should be avoided.

3. Change the living environment of pests, move the flower pot to a dry and ventilated place, bask in the sun, pay attention to timely watering, and shade-loving flowers, such as orchids and bamboos, should cover the plants and prevent sunburn leaves.

Fourth, replace the potting soil. After changing the soil, it is necessary to pay attention to shading and maintenance for a period of time before it can be transferred to normal cultivation.

Summary: It is a very common phenomenon to grow insects in the soil of planting flowers, and there are many reasons for the generation, the most important reason is that the soil is not treated well, and many germs, eggs and pests are living or overwintering in the soil. So the best way is to change the pot, that is, to change the soil.

If you haven't started potting yet, sanitize the soil before potting.

Spraying the soil with an ordinary household insecticide, or soaking it in water with a cigarette (overnight), and pouring the smoke water into the soil can also kill insects. Neither of these methods will hurt your sunflowers.

Just spray some dimethoate cream!

Add 50 60kg of water with 500ml of 40% methyl isosulfonate EC, mix 500 600kg of wheat, corn or sorghum seeds, spray evenly, spread out and dry before sowing. It is valid for 30 to 35 days, and can control underground pests such as mole crickets, grubs, and needleworms. The seeds, seedlings and rhizomes of sorghum, wheat, beans, peanuts, sugar beets, cotton and other field crops and vegetables and fruit trees, biting the seeds or biting off the roots and stems of the seedlings will cause lack of seedlings and broken ridges, and the heavy will destroy the seeds and end the harvest, which will not only cause a reduction in yield, but also allow the pathogens to invade after biting.

Booby-trap adults. According to the phototaxis of the adults, they are lit to trap and kill at the peak of adult emergence, or the adults are poisoned with sweet and sour venom. 2 Planting trap crops.

In spring, a small amount of amaranth seeds are sown in the nursery to attract pests to the amaranth to reduce the damage to flowers and trees. Each hectare is mixed with 1500g of 50% phosphine emulsifiable concentrate mixed with 375 450kg of fine sand or fine soil, sprinkled with medicated soil in a shallow ditch next to the root, and then covered with soil, or combined with hoeing to apply medicated soil, which can prevent several types of underground pests. In particular, winter wheat regreening or spring-sown crop seedlings are harmed by grubs or needleworms, which can be remedied by this method.

Sunflower sclerotinia sclerotinia is caused by the pathogenic sclerotinia sclerotinia sclerotiorum, mostly occurs in the spring low temperature and rainy period, the stem or leaf of the sunflower appears brown lesions, with the development of the disease, the brown lesions gradually spread to other parts, and finally the lesions form concentric sclerotinia sclerotinia commonly known as rotten big heads, harming stems and flower discs, can be treated with "Radomold" seed dressing or stems and leaves. Liedang is a flowering parasitic plant, parasitic in the roots of sunflowers to absorb sap, drought and heat are the most harmful, the best way to eliminate Liedang is to shovel and hoe in the field.

Sclerotinia sclerotinia is commonly known as rotten head, which harms stems and flower discs, and can be treated with "R. redopharia" seed dressing or stems and leaves. Liedang is a flowering parasitic plant, parasitic in the roots of sunflowers to absorb sap, drought and heat are the most serious, the best way to eliminate Liedang is to shovel and hoe in time in the field to strengthen field management. Scientific fertilization, reasonable application of nitrogen, phosphorus and potassium fertilizers to improve plant disease resistance; Reasonable irrigation, pay attention to drainage after rain; After harvesting, remove the sick and residual bodies in time and take them out of the field for centralized treatment.

4.Pharmaceutical prevention and control. Symptomatic medication should be used in a timely manner at the beginning of the disease**.

Deep ploughing in winter can kill and freeze some overwintering pests. The application of well-rotted organic fertilizer can reduce the egg laying of mole crickets and provide food for grubs and ground tigers, thereby reducing the harm to seedlings. At the same time, the use of unrotted organic fertilizers should be prevented to prevent attracting adult worms to lay eggs.

Weeding and insect control, weeding, strengthening field management, oviposition hosts.

Be sure to turn the soil frequently, so that these pests can appear in the sun and can effectively kill the pests.

You can spray some drugs and these drugs can kill those pests.

The main diseases of sunflower are powdery mildew, black spot, bacterial leaf spot, rust (prevalent in high humidity period) and stem rot. Prevention can be achieved by disinfection of the substrate, proper watering, increased air circulation, intermittent spraying of protective fungicides, etc. After being susceptible, remove the diseased leaves and stumps and burn them intensively; In the early stage of the disease, it can be sprayed with 500 times of 50 times of 50-methyl tobuzin wettable powder or treated with the same amount of Bordeaux solution.

For the pests of sunflowers, such as aphids, blind bugs, red spiders and beetles, etc., you can use 1000 times of 40 dimethoate emulsifiable concentrate and 1500 times of 73% gram mite emulsifiable concentrate for spray control and spraying.

There are two ways to grow sunflowers].

Potted plants: with six-inch pots, filled with nine full of peat soil, organic loam, coconut soil, seed planting about one cm to three cm, must be resoiled, first wet the soil and then planted, three to five days to germinate, fifteen days after planting must be fertilized, pot cultivation to use organic fertilizer or long-acting, slow-acting fertilizer, rainy season must be sprayed, other seasons are not used, there are pests and diseases can be sprayed one to two times, planting fifty-five days can flower, the winter is longer, sunflower seeds can be stored at the bottom of the refrigerator for several years, can not be damp, can be put desiccant.

Nursery cultivation: such as potted planting, the distance between the front and back of the plant is about 30 cm, and chemical fertilizers can be applied, but not too close to the roots, about 10 cm or more, not too much water, and long sunshine.

In agriculture, there is a biological pest control method, which is to spray with biogas slurry and a certain proportion.

I can't help it, I can use some spray insecticides, or I can use dichlorvos, dichlorvos is specially used for insecticides on crops and plants, but remember to dilute it.

You can do it.

Eliminate old habits in one dry and two clean, five stresses and four beautiful trees and new winds, horizontal criticism: say goodbye to the old and welcome spring.

The sunflower is almost ripe and the worm how.

I've planted two sunflowers before, but they were eaten by the insects before they could grow full. I looked up some methods on the Internet, hoping to help. The most harmful diseases are mainly sclerotinia sclerotinia and insect pests, mainly sunflower borer.

1.Sunflower sclerotinia Sclerotinia Sclerotinia occurs very widely, the incidence is serious, which can cause sunflower stem folding, flower disc and seed kernel rot, which poses a great threat to sunflower production, and there are four types of root rot, stem rot, leaf rot and flower rot, among which root rot and flower rot are seriously affected. The flower rot disease is manifested as a water-soaked lesion on the back of the disc after the flower disc is damaged, and it becomes brown and rotten in the later stage, and white hyphae grow, which spreads between the achenes and the fruit seat to form a black sclerotia, and the flower disc falls off after decay, and the achenes cannot ripen.

Flower discs with less damage produce small seeds, dull, bitter taste, and peeling skin, and most seeds cannot germinate. Prevention and control measures: At the beginning of the disc, spray control can be carried out with agents such as Suclin, Sclerotinia sclerotium, Nongliling, Scutellin or carbendazim, focusing on protecting the back of the flower disc.

Due to the tall sunflower plants in the later stage, it is difficult to spray pesticides, and you can also take the method of hitting the pole in the field after the rain to reduce moisture. 2.Sunflower borer Both adults and larvae can be harmed, and the peak occurrence of adults is from late July to early August.

Adults gather in sunflower fields at 8 a.m. to 9 p.m. to feed and lay eggs. In early August, the eggs hatch into larvae, feed on seeds, often bite flower discs into many tunnels, and spin silk nets; Rain often causes the flower disc to rot, reducing the yield and quality of sunflowers. Prevention and control measures:

In the full flowering period of sunflowers, before the larvae are bored into the seeds, spray trichlorfon, the control effect is more than 90%, but it is harmful to bees, resulting in many empty shells, so it should be used cautiously, and biological agents can also be used, such as BT emulsion dilution spraying flower discs. In areas with serious damage, in order to prevent adult insects, combined with larval control, in late July and early August, during the peak period of adults, dichlorvos fumigation or application of dichlorvos smoke.

The application of 40% dicofol EC 1000 1500 times, 20% mite-kill net wettable powder 2000 times, 15% pyridafen EC 2000 times, and zitogenol EC 6000 8000 times can achieve the ideal control effect.

Summary. 1. Enemy killing.

The effect of this brand of pesticide insecticide is as simple and violent as his name, that is, it is easy to kill all kinds of pests, and thus very.

It can be said that it protects the life of crops and plants, and does not leave harmful substances on plants after use.

The best of the pesticides and is preferred by many farmers.

2. Bayer. Bayer is one of the top ten brands of pesticides, and the biggest highlight of this brand of pesticide insecticide is that it pollutes the environment.

Small, almost 0, there are many pesticides on the market after the use of insecticides will leave some harmful elements in the soil, which will affect the future.

Facing several generations of plants, this is the need for such a pesticide to protect the environment.

3. Huaihai. Although this brand of pesticide insecticide is known for its high efficiency, the high residue behind its high efficiency is also very.

Unacceptable, residual harmful substances are very bad for the human body, although reasonable, but its disadvantages are also very clear.

What kind of medicine is used for soil insecticide before sunflower planting?

1. The effect of pesticides and insecticides of this brand is as simple and violent as his name, that is, it is easy to kill all kinds of pests, so as to protect the life of crops and plants, and will not leave harmful substances on the plant after use, which can be said to be the best among pesticides, and is favored by many imitation farmers. 2. Bayer Bayer is one of the top ten brands of pesticides, the biggest highlight of this brand of pesticide insecticide is that he has very little pollution to the environment, almost 0, there are many pesticides and insecticides on the market after the use of some harmful elements in the soil, which will affect the plants of the following generations, which is the need for a pesticide insecticide to protect the environment. 3. Although Huaihai's brand of pesticide insecticide is known for its high efficiency in the market, the high residue behind its high efficiency is also very unacceptable, and the residual harmful substances are very bad for the human body.

Chloranthane clothianidin suspension. This pesticide is a compound of chlorantraniliprole and clothianidin, which is a field insecticide and is a representative of the bisamide insecticide. The working principle is to act on the fish nitine receptors in the pest's body, so that the calcium in the pest's body is lost, so that the pest will produce symptoms such as chicken hemp and paralysis, and even drowsiness, and through contact killing and stomach poisoning, reduce the amount of food intake of the stool, or simply stop eating until death.

The longest duration of the drug can reach 60 days.

If there is already an insect infestation on the sunflower, spraying insecticides cannot completely solve the problem, because the insect infestation is relatively stubborn, and it generally requires a comprehensive variety of methods to solve it completely. Here are some things you can do to help control the sunflower infestation:

1.Hand Catching: Use your hands or tools to catch pests one by one and remove them.

2.Inspection and cleaning: Regularly inspect the leaves and flowers of the sunflowers, and wash off the eggs and slurry that may be present.

4.Use natural enemies: Introduce natural enemies, such as dragonflies and aphids, to control the pest population.

5.Increase plant vitality: Improve the health and vitality of sunflowers, making plants more resistant to insect pests.

It is important to note that different types of pests require the use of different kinds of pesticides, so be sure to read the product leaflet carefully to ensure that the insecticide is used correctly before use. In addition, care should be taken not to overuse pesticides to avoid effects on plants and the environment.