Aphids so treated, a season without aphids, clean and thoroughly!

Aphids are one of the main pests of crops. They have many species, occur frequently, breed quickly and do great harm.It sucks crop juice, plant is destroyed hind weak wither, and aphid still can transmit a variety of plant virus, cause crop virus disease, cause greater loss.Today we are going to teach you a way to control aphids.

I. harmful symptoms

Aphid commonly known as pudy insect, belongs to the same order of insect pests, mainly adults, nymphs concentrated in vegetable seedlings, tender leaves, stems and near the ground of the leaf back, thorn juice.The plant branches and leaves of the damaged plants are yellow and deformed, the buds are deformed, the flowering period is shortened, the flower capacity and color are reduced, and the plant wilts and dies in severe cases.

• With so many aphids, it is difficult for vegetables to grow properly
• This vegetable's growing point is almost all "occupied" by aphids, very terrible
  Second, life habits
  Aphids have occurred throughout the year, reproductive capacity is very strong, in air temperature is 29 ℃ or so fastest.It can reproduce 10 to 30 generations a year, and the overlapping phenomenon is prominent.Female aphids are fertile from birth.And aphids do not need a male to conceive (parthenogenesis).
  Efficient prevention and treatment methods
  1. Agricultural control.As far as farming system is concerned, crop rotation and continuous cropping should be avoided.After the previous crop of vegetables has been harvested, ploughing and drying the ridges should be done in time to remove debris in the fields to reduce the source of aphids.Aphids love to eat carbohydrates. In the process of vegetable cultivation, they should apply more mature farm manure and use less chemical fertilizers.If there is a sudden increase in carbohydrates in the plant, aphids will break out in a short time.
  Natural enemies control aphids.There are many natural enemies of aphids, including lady beetles, lady beetles, clams, aphid flies and aphid fungi. By protecting and utilizing these beneficial natural enemies, a large number of aphids can be eliminated, and the population of aphids can be controlled within a number that is insufficient to cause a large area of damage.When aphids in the field are few and natural enemies have a certain number, do not apply pesticides, so as to avoid harming natural enemies and damaging the ecological balance.When aphids need to be used for prevention and control, they should also be used on the affected parts of the plant, such as the growth point, young leaves, young stems and back of leaves, etc., so as to target the target and fully protect the natural enemies.
  Yellow board lure aphids.The winged adult aphid has a strong tendency to yellow and orange. In the production, the yellow cardboard of size 15 cm x 20 cm can be made, and the cardboard is coated with no.Oil yellow board lure aphids after the timely replacement of aphids, aphids can make the drug yellow board that die.
  4. Avoid aphids with silver grey film.Aphid has stronger evasive sex to silver-gray, can hang a few silver-gray plastic strip in the field or cover vegetable with silver-gray plastic film.
  Urine wash mixture to kill aphids.The urea, washing powder, water according to 4:1:400 ratio made of urine washing mixture, uniform, meticulous spray on both sides of the leaf, each mu spray liquid 60 kg, spray 2 ~ 3 times.Spraying urine washing mixture not only has better control effect on vegetable aphids, but also has the effect of leaf surface fertilization promoting growth.But the urine washes the mixture to match now USES, in case urea volatilizes the invalidation.
  6. Plants kill aphids.(1) tobacco ground into fine powder, add a small amount of lime powder spread;(2) soak capsicum or artemisia annua in water for one day and night, filter and spray;(3) the castor bean leaves are crushed and scattered, or soaked with water at 1:2 for 10 minutes and then boiled, filtered and sprayed;(4) soak peach leaves in water for one day and night, add a small amount of quicklime and spray after filtration.
  Plants drive away aphids.The odour that if leek volatilizes has drive avoid action to aphid, so will leek and other vegetable collocation are planted, can reduce the density of aphid, reduce aphid the harm degree to vegetable.
  Pig bile kills aphids.Add appropriate amount of baking soda or washing powder in 10% pig bile liquid and spray directly on vegetable plants damaged by aphids and cabbage bugs, which can effectively kill pests.The diluted liquid can be maintained for 10 to 12 days without failure.
  9. Lime powder kills aphids.Dust the aphids with lime and the aphids are quickly killed.
  Above a few kinds of methods, use, basically can assure whole growth season does not suffer aphid harm, still can prevent and cure the happening of virus disease effectively at the same time, everybody might as well try.
  Several formulas for resistant aphids are recommended
  1. 50% fluridinitrile water dispersible granule: with high efficiency and fast properties, it can fight and kill, and has a long duration.It can effectively control succulent pests resistant to neonicotinoids, pyrethroids, organophosphorus and carbamate pesticides.Special effects on aphids.
  2, 40% fluridinitrile and ethyl polybactericidal agent water dispersible granule: has the internal absorption conduction and the osmosis effect, is able to achieve the legendary fight against death.It is also effective against brown planthopper rice.Control objects include aphids, whiteflies and scale insects.After spraying for 20 minutes, the insect can be dead, and the duration is more than 20 days.
  3. 20% fluorodinitrile pyridoxone: this product has shown excellent control effect on the spiny and sucking mouthparts pests of various crops.It has the function of touch - off and internal absorption.Both xylem and phloem can be translocated in plants.Therefore, it can be used as leaf spray or soil treatment.
  4. 20% fluoridinamide water dispersing granule: it has not only the function of palpation and gastric toxicity, but also the function of good nerve agent and fast food resistance.Aphids and other stinging sucking mouth pests feed on the plant juice containing halodinamide, which is quickly blocked from sucking, and no excreta appears within 1 hour. Eventually, they die of hunger.
  5. 46% fluridine amidine water dispersant: because its mechanism of action is different from that of conventional insecticides, it has special effects on aphids that are resistant to organophosphorus, carbamate esters and pyrethroids.It lasts for more than 20 days.