8 tips to control vegetable aphids, aphids have nowhere to escape!

There are five vegetable greenhouses in Uncle Sun's house, which mainly grow lettuce. In the past few days, it was found that two of the greenhouses had "uninvited guests", that is, aphids.

Uncle Sun said that aphids are very harmful. They propagate quickly and have a large number. They concentrate on the leaves of lettuce to suck leaf juice, causing the damaged vegetables to lose water and nutrition, and the leaves of lettuce turn yellow. Aphids also spread virus diseases, causing the whole plant to wilt and die in serious cases, resulting in a decline in product quality.

Uncle Sun has already made up his mind about the harm of vegetable aphids. It turns out that Uncle Sun has been growing vegetables in the greenhouse for many years and has already had his own experience.

Uncle Sun suggested that green control of vegetable aphids can not only improve the control effect of vegetable aphids, reduce investment, but also reduce pesticide residues in vegetables, improve the quality of vegetables, and sell at a good price.

1. In order to prevent the occurrence of vegetable aphids, Uncle Sun ploughed the vegetable fields before planting vegetables. After ploughing, the aphid larvae hidden in the soil will die in the sun, which can effectively prevent the occurrence of aphids.

two。 Aphids do not like to smell the smell of leeks, vegetables and leeks can be planted at intervals, using the smell of leeks can reduce the density of aphids and reduce the damage of aphids to vegetables.

3. Aphids like to eat carbohydrates, in the process of vegetable cultivation, more mature farm manure should be applied, chemical fertilizer should be used as little as possible, especially too much fertilizer should be applied at one time to avoid excessive green and overgrowth of vegetable leaves. If carbohydrates increase sharply in the plant, aphids will break out in a short period of time.

4. The yellow board method was used to trap aphids. Yellow has a strong seductive effect on aphids. Yellow cardboard with a size of 15 × 20 "can be made. It is best to apply a layer of engine oil on the cardboard and fix it in the vegetable greenhouse. When aphids see the yellow armyworm board, they fly to the yellow board and kill them one after another. The effect of insect control is good. After the engine oil yellow board is full of aphids, it should be replaced in time, and the drug yellow board can make the aphids die immediately after touching the medicine.

5. The natural enemies of aphids are seven-star ladybird, discolored ladybug, aphid fly and aphid mold, which have irreplaceable killing effect on aphids. Attention should be paid to the protection and utilization of them in production so that the population of aphids can not be harmed enough.

6. Silver gray film to avoid aphids. Aphids have a strong avoidance to silver gray, so they can hang some silver gray plastic strips in the field or cover vegetables with silver gray plastic film.

7. Soil methods for controlling aphids. Laundry detergent can also kill aphids. Washing powder and water are mixed evenly according to the weight of 1PUR 450. Sprays on vegetable leaves can also kill aphids.

8. Uncle Sun also said that aphids should be prevented in advance, and if a large number of aphids appear, chemicals should be used to control aphids. Uncle Sun recommended five kinds of special agents to control vegetable aphids, hoping to be helpful to everyone.

1. Aldicarb, control vegetable aphids, use 50% wettable powder 10-18g per mu in the initial peak of aphids, spray 30-50kg on water.

two。 Matrine, 0.3% matrine water 133 g / mu, was sprayed at the beginning and epidemic period of aphids.

3. Pyrethrin, 1.5% pyrethrin EC 120 g / mu, was sprayed at the beginning and epidemic period of aphids. Pyrethrin is easy to decompose in the light, so spraying should be carried out in the evening.

4. Acetamiprid is very effective in the control of vegetable aphids. To control vegetable aphids, spray 3% acetamiprid EC 15ml / mu plus 30kg water per mu during the initial peak period of aphids. Even in rainy years, the effect can last more than 15 days.

5. Imidacloprid, to control vegetable aphids, use 10% imidacloprid wettable powder 10g / mu or 5% imidacloprid EC 20g / mu and spray 30kg / mu with water.

The above is Uncle Sun's way to control vegetable aphids. Have you learned it? Subscribe to 100 thousand agricultural materials why to learn more about agricultural materials!