How to get rid of aphids on cotton!!!!!!!!

1.Agricultural control. eradicate weeds, strengthen water and fertilizer management, and promote early emergence of cotton seedlings; Combined with seedlings and fixed seedlings, pull out aphid plants, and take them out of the field to burn them intensively.

2.Pharmaceutical prevention and control. Before the cotton seedlings have 3 true leaves, when the leaf curl plant rate reaches 5% 10%, and when the leaf curl plant rate reaches 10% 20% after 4 true leaves, spray 30 kg of water evenly with 15 grams of 10% imidacloprid wettable per mu, or 3000 times of 10% acetamiprid emulsifiable concentrate, or 1500 2000 times of 20% acetamiprid wettable powder, or 20% carbofuran emulsifiable concentrate 2000 4000 times.

When spraying, focus on the heart leaves of cotton seedlings, and pay attention to turning the nozzle to spray to the back of the leaves.

From the experience of my life.

There are two kinds of 1 dozen pesticides.

2 Insert a stick in the ground, expose the cotton pole 50 cm, set a cardboard cardboard and wrap a yellow plastic bag, depending on the number of places, you can put a few more.

When aphids occur sporadically, they can be gently brushed off with a brush dipped in water and killed.

When the number of aphids is large, it is necessary to spray in time. There are many pesticides to control aphids, such as spraying 40 dimethoate or 80 dichlorvos emulsion 1000-1500 times, or spraying 2 5 rotenol 1000 times, or 60 times of lime water (plus laundry detergent) and so on.

Also: 1. Garlic juice. Take a kilogram of purple garlic, add a little water and soak for a while, mash the juice, dilute it with water 10 times, and spray it immediately, which can control aphids, red spiders, scale insects and nymphs; Pouring garlic juice into the potting soil can control nematodes and earthworms.

2. Tobacco water. Take 50 grams of tobacco leaves or tobacco stems, 100 grams of leftover cigarette butts, add kilograms of water, boil for half an hour, or soak for a day and night, rub repeatedly with your hands, filter with gauze, and add neutral laundry detergent to spray, which can control aphids, red spiders, leafhoppers, thrips, leaf curlers and other leaf-eating pests.

3. Chilli water. Take 50 grams of dried red pepper, add about 1 kg of water and boil for 10-20 minutes, filter and spray the clear liquid, which can control aphids, red spiders, whiteflies, etc.

Fourth, pepper water. Take 50 grams of Sichuan pepper (or pepper), add about 1 kg of water, boil for 30-40 minutes, filter and spray the plant to kill aphids.

5. Pulsatilla boiled water. Take 500 grams of pulsatilla bulbs, add 5 kg of water and boil for half an hour, filter and spray flowers, which can kill aphids.

Spray a little water to get rid of it... Generally, after the rain, there are fewer aphids...

If there are aphids on the plant, the easiest way is to go to the agricultural point to buy "enemy killing", which is safe and non-toxic.

What kind of aphid, boss? Flowers? Trees? Not the same.

In the prevention and control, drugs with stomach toxicity and contact killing effects such as acetamidos and imidacloprid are used alternately with drugs such as Ruijinte and 5% Actet. The prevention and control of aphids must be done "low concentration, sufficient liquid, spray evenly and thoroughly, no leakage of trees, no leakage of leaves", the general amount of liquid medicine per mu is 40-50 kg, according to the insect situation 7-10 days to prevent and control once, continuous spraying 2-3 times. It is advisable to apply the pesticide before 10 a.m. or after 5 p.m.

Aphids, also known as vegetable aphids, greasy insects, etc., including peach aphids, radish aphids and cabbage aphids, are one of the main pests of cruciferous vegetables such as cabbage.

Use silver gray film to avoid aphids. Pharmaceutical prevention and control: Commonly used agents are:

50% aphid-asciopy fog wettable powder or anti-aphid carb wettable powder, 10 18 grams per mu, spray 30 50 kg of water. This agent is specially designed to control aphids, does not kill natural enemies and bees, and is especially suitable for harvesting fields. Once net or 10% imidacloprid wettable powder, the dosage per mu is 5 10 grams to 100 kg of water.

Prevention and control methods.

1. Drug prevention and treatment.

When a large number of aphids are found, spray pesticides in time. Spray the plants 1 2 times with 50% marathon emulsion 1000 times, or 50% pyridoxine emulsion 1000 times, or 50% anti-aphid wettable powder 3000 times, or deltamethrin emulsion 3000 times, or 3000 times of dissol emulsion, or 40% imidacloprid aqueous solvent 1500 2000 times, etc.; Use 1:6—1:

Prepare chili water in a ratio of 8 (boil for about half an hour), or spray with laundry detergent water in a ratio of 1:20—1:30, or use 1:

20:400 ratio of prepared laundry detergent, urea, water mixed solution spraying, continuous spraying of plants 2 3 times; For aphids such as peach powder aphid, which is coated with wax powder, 1% soapy water or washing powder should be added when applying any agent to increase adhesion and improve the control effect.

2. Artificial prevention and control.

In autumn and winter, whitewash the base of the trunk to prevent aphids from laying eggs; Combined with pruning, cut off the damaged branches and residual flowers, and burn them intensively to reduce the overwintering insect population; In winter, scrape or brush off the densely overwintering egg masses on the bark, clean up the residual branches and leaves in time, and reduce the eggs of overwintering insects; When a small number of aphids are found on the flowers in spring, you can use a brush dipped in water to brush them off, or place the potted flowers under tap water and rinse them in a swirling way.

3. Protect natural enemies.

There are many natural enemies of aphids, including ladybugs, lacewings, aphid flies and parasitic wasps, etc., which have a strong inhibitory effect on aphids. Try to apply as little broad-spectrum pesticides as possible, avoid applying pesticides during the peak period of natural enemy activities, and artificially raise and release aphid natural enemies if conditions permit.

The control of cotton aphids is mainly based on agricultural control and biological control, supplemented by chemical control.

Agricultural control. Planting insect-resistant varieties is an effective measure to control cotton aphids, such as planting 372 and so on.

Intercropping can increase the variety and number of natural enemies and control aphids. Such as cotton and wheat interplanting; intercropping of cotton with mung beans, green manure, etc.; Flower arrangements are planted with corn, rape, sorghum and other lure crops.

Water-upland rotation can reduce the occurrence of cotton aphid. Where conditions permit, cotton and rice rotation is implemented.

Treat overwintering hosts to reduce early spring aphid sources. Generally, before the cotton seedlings are unearthed, the weeds inside and outside the cotton field are removed. It is possible to treat the overwintering hosts of P. zanthoxylum, pomegranate, hibiscus and holly to reduce the amount of aphids in cotton fields.

Pharmaceutical prevention and control. Seed dressing.

Before sowing cotton, according to the amount of seeds per mu and 3% carbofuran granules, mix evenly, or mix with iron digram (also called aldicarb) seeds, with 50 grams of active ingredients per mu, can control aphid damage for 40 50 days. The effect is also very good when mixed with 3911 (phosphorus) emulsion or granules and seed coating agent.

Drip hearts and coat stems to control aphids.

Dilute 80 100 times with 40% dimethoate emulsion or 40% monocrotophos or 50% methamidophos emulsion, and drop the liquid on the top of cotton seedlings with a sprayer to control aphid damage.

With 40% dimethoate oxide emulsion or 40% monocrotophos or 50% methamidophos emulsion, polyvinyl alcohol and water, according to the ratio of 1::5 to prepare the stem coating agent, with a brush-like instrument, the liquid medicine is applied to the purple and green parts of the cotton stem, and the anti-aphid effect can reach more than 90%.

Spraying control. Spray 1000 1500 times with 50% monocrotophos, 50% phoxant, 40% dimethoate, 40% aphid, 35% aphid, 50% phosphamine and other agents.

With the seven-star ladybug (introducing natural enemies)!

Aphids are on cotton, which can be controlled by spraying with pyridoxon or trichlorfon.

Aphids are one of the main pests in the growth of cotton, which should not be underestimated, and should be prevented and controlled in a timely manner.

Mystery: The body is hemispherical and carries seven stars on its back. The aphids are most afraid of it when they see it, and the cotton harvest depends on it.

Hit an animal) riddle: the seven-star ladybug.