1、 Preventive methods

1. You can use a yellow board with bright colors, stick a piece of yellow paper on it, and then apply a thick layer of butter on it, and bury the plate at the edge of the plant, so as to attract aphids and stick it to the panel

2, you can also use liquor in the spray bottle, and then encounter pests, directly to the spray can be, Baijiu Baijiu the best choice of high concentration, generally choose 52 degrees can be. Spray it twice a day, in the morning and afternoon, so that it will be OK after three consecutive days

3. The washing powder at home can also be prevented and treated. Add some water appropriately. If you are not afraid of trouble, the effect will be better if you add a little urea. It can be carried out in the evening every day. After spraying for two or three days, it will have obvious effect

4. Aphids are also afraid of the smell of garlic, so they can mash garlic into a paste and leave juice. Add one liter of water to 100 grams. Then spray the whole plant so that the aphids can walk around the road

5. The leek in the home is made into juice, properly added with some water, and used to spray the plants directly, which can also effectively remove the invasion of aphids