What harm do aphids do to chrysanthemum aphids?

Chrysanthemums are easy to grow and grow, and the flowers are beautiful and have a long florescence. Therefore, many families will plant chrysanthemums. However, chrysanthemums are particularly easy to grow aphids, just to see the bright flowers on the little black spots, it spoils the scenery. So, what is the harm of aphids? What about chrysanthemum aphids?

The main aphids harmful to chrysanthemum are chrysanthemum aphid, cotton aphid and so on.

The chrysanthemum aphid has a dark brown body, glossy body, black ventral tube and tail, transparent wings of female aphids and reddish brown nymph, and its shape is similar to that of wingless female aphids. Chrysanthemum aphids can produce more than ten generations a year. Winged female aphids are born in autumn and overwinter in chrysanthemum bushes. When the chrysanthemum sprouts in the spring next year, the sprouting is harmful to the stems and leaves, and to the pedicels after budding, which hinders the development of the buds and makes the flowers bloom badly.

The body color of APHIS gossypii is yellowish at first, then black, with yellow-white feet and antennae. The nymph is grayish white at first and then turns yellow. APHIS gossypii has a strong reproductive ability and can produce more than 20 generations a year. Wintering on shrubs and weeds. When the chrysanthemum is cultivated and growing, the cotton aphid migrates and does harm to the tender buds and young leaves, causing the bud leaves to curl and wilt, stunting, and even withering the whole plant.

In addition, there is a small aphid, dark green; at first, the leaf back of the cluster is harmful, and it sneaks into the petals during flowering, which not only affects the ornamental, but also shortens the life of the flower.

For this pest of chrysanthemum, the following methods can be used to control it.

(1) use 50 grams of fresh chili or dry red wine chili peppers, add 30-50 grams of water, cook for about half an hour, and sprinkle the damaged plants with its filtrate.

(2) 3-4 grams of detergent and lOO grams of water were mixed into a solution and sprayed continuously for 3 times, and the control effect reached lOO%.

(3) use "wind oil essence" to add water 600 murine 800 times solution, spray with sprayer, make the insect body sell potion. The effect of killing aphids, shell insects and other pests is more than 95%, but does not cause drug damage to plants.

(4) the washing powder, urea and water are mixed into a mixture according to the ratio of 1 ∶ 4 ∶ lOO, which can be used to spray plants.

(5) soapy water to control aphids, etc.: use half a basin of water, put in a little washing powder or rub some soap, preferably medicinal soap, after stirring up foam, rinse the branches of potted flowers in soapy water, or use a soft brush dipped in soap water to smear the branches and leaves. After a few days, aphids, shell insects, red spiders and other pests can be eliminated.

(6) put the damaged plant into a jar that can fit, light a plate of mosquito-repellent incense, cover the cylinder mouth with plastic film, fasten it with rope, and make a small hole in the plastic film. Time depends on the size of the plant, generally half an hour to an hour, no matter adults or eggs can be killed.

Although aphids are small, their harm should not be underestimated. Therefore, measures must be taken in time. Try the above methods are said to have a certain effect, you might as well try.