Pollution-free control techniques of vegetable aphids

Aphids are the most common and harmful pests in the process of vegetable cultivation, and most farmers choose chemicals to control aphids, which will cause drug residues more or less. The use of pollution-free prevention and control technology, which can reduce costs, reduce drug residues, improve the quality of vegetables, achieve the purpose of pollution-free production, let's take a look.

1. Expelling aphids with plastic film

Aphids have a greater tendency to different colors, and silver gray has an excellent repellent effect on aphids, you can use mobile phones with some silver-gray food bags and plastic bags. When in use, the plastic bag can be turned over, making the silver gray outward, and then inserted with a wooden stick on the vegetable field or seedling bed, which can play an excellent way to avoid aphids and reduce the harm of infectious diseases such as virus diseases.

2. Yellow board to trap aphids.

Silver gray has a good repellent effect on aphids, while aphids have an excellent tendency to yellow, which can attract aphids in the production of yellow cardboard. It is best to apply a layer of aphid control agents on the cardboard and also insert it in the field or seedbed to keep it at the same level as vegetables. When winged aphids see yellow cardboard, they land on it, so it will be glued to it, and the potion will kill them. But when you need to pay attention, the yellow board should be replaced in time, so as to greatly reduce the harm of adults as vegetables.

3. Detergent to kill aphids

Washing powder is a necessity for us, and it is also very convenient to control aphids. The main ingredient of washing powder is sodium dodecyl benzene sulfonate, which has a strong contact effect on aphids. Therefore, washing powder can be diluted 400-500 times with water, 60-80 kg per mu, continuous spraying 2-3 times in the field, can play an excellent control effect.

4. Plant extermination

The volatile smell of leek has an excellent repellent effect on aphids, which can be planted with other vegetables, which can significantly reduce the harm of aphids to vegetables. In addition, tobacco can also be ground into fine powder, plus a small amount of lime powder, and then spread in the field, which has an excellent effect of killing aphids. Castor leaves can also be crushed and sprinkled, or soaked in water, boiled for 10 minutes, filtered and sprayed, which can also have a good control effect.

5. Protect natural enemies

Aphids themselves also have many natural enemies, such as ladybugs, lacewings, aphid flies, etc., just because of the use of a large number of pesticides, so their number is becoming more and more rare, so we should pay attention to protection and use.

The above is the introduction of pollution-free vegetable aphid control technology, hope to help you, want to know more related knowledge, please pay attention to us.