At the early stage of the disease, a white powdery mildew layer appeared on the back of the leaves, and the front of the leaves gradually turned into pale yellow spots, and then the leaves shrank and twisted. In severe cases, white powder will grow on the front of the leaves. The diseased parts on petioles and tender tips are not so swollen and curved. After the bud is damaged, it becomes deformed, and a white powdery mildew layer is produced on the affected part. In the later stage, small black spots are produced in the mildew layer of the ward (not produced in some areas), which are closed capsules of bacteria. The diseased leaves turn yellow and fall off, and in severe cases, they cannot bloom.

Preventive and control measures:

(1) combine pruning in winter to cut off diseased branches and buds. Early detection of diseased leaves should be removed in time. (2) Rational fertilization. Nitrogen fertilizer should not be too much, and phosphorus and potassium fertilizer should be applied appropriately. Water moderately to avoid being too wet and too dry. (3) Before plants germinate in early spring, spray 1: 1: 140 bordeaux solution for prevention. Or apply 77% kocide 600 times solution. (4) After onset, 15% triadimefon 800 times solution, 70% thiophanate-methyl 800 times solution or 62.25% fresh 600 times solution can be sprayed. Or try spraying 0.02%~0.03% potassium permanganate.

What happened when the white car rubbed against something blue? Primer or paint from other places, or scrape off the color. If it's not broken, it can be polished.

What is the matter with flesh-colored and white in menstruation? Hello:

During menstrual cycle, estrogen and progesterone secreted by ovary proliferate and secrete in endometrium. Before menstruation, estrogen and progesterone decrease, glands decline, endometrial tissue ischemia, necrosis, shedding, menstrual cramps, in which flesh-colored or white things are decidual tissue. d

How is it that there are three white spots on the child's face? In spring and summer, some children and teenagers have oval and round white spots the size of fingernails, commonly known as "insect spots", and some also have small chaff-like scales, which are actually symptoms of "white pityriasis". But many parents and doctors will mistake it for tinea. Children's long-term partial eclipse and indigestion do cause pityriasis albiflora, but this is not the only reason, and sometimes it is related to pityrosporum infection. At the same time, some white spots are particularly obvious if they fall off, and dandruff is atypical, which needs to be differentiated from vitiligo and tinea corporis. Intestinal parasites can also cause pityriasis albicans, so children will feel itchy. To judge whether a child is infected with parasites, it is necessary to observe the growth and development of the child and understand whether the child will have abdominal pain, poor complexion and poor appetite. These are also corresponding symptoms. If you want to diagnose whether it is a "bug spot", you may wish to take your child to the hospital for stool and egg examination and symptomatic treatment.

Pityriasis albicans can also be caused by weakness of spleen and stomach and lack of trace elements and vitamins in the body. Atractylodes macrocephala, Dioscorea opposita, Poria, White Lentils and Crataegus pinnatifida should be selected to strengthen the spleen and regulate the stomach, and eliminate stagnation. Parents can also supplement their babies with zinc preparations, iron preparations, multivitamins and other nutrients under the guidance of doctors, among which zinc preparations are the main ones.

Parents don't have to worry about pityriasis alba. First of all, you should keep your child's face clean. Never wash your face with strong alkaline soap. After washing your face, you can apply some cream containing silicone oil or 5% sulfur cream or vitamin B6 ointment. If the child feels itchy, he can also apply compound Connollo cream. The white pityriasis on some children's faces will sometimes naturally improve, but the color of local skin will still be slightly lighter than the surrounding skin.

What's with the white thing under the fingernails? What's that white thing? If there are white spots in the middle and upper parts, it should be caused by calcium deficiency.

What's with the white thing under the fingernails? There are white spots or mica nails, indicating the lack of trace elements such as calcium and silicon.

And there are parasites, such people are prone to nervousness, irritability and habitual constipation. White spots or flocculent white spots appear on nails, which may be zinc deficiency or gastrointestinal diseases or anemia. Rough and dull surface, grooves, longitudinal stripes, white spots and abnormal proportion of healthy circles are mostly signs of poor health. White spots on nails are common and often appear repeatedly. Some people say that this is a sign of poor gastrointestinal function.

But there is no medical basis for this. Because of long-term exposure, nails are very fragile, such as fingers stuck in the door, nails being squeezed, colliding and so on. , resulting in damage to the formation of nail matrix cells at the root of the nail, and white spots will appear. If the nail bed is damaged, there will be cracks and bleeding under the nails. But don't worry, as the nails grow up, they will eventually be cut off.

Although there is no clear explanation mechanism for white spots on nails in medicine, we found in clinical work that some children with calcium and zinc deficiency will have this situation. I suggest you take your child to the hospital for trace element examination, determine the cause and carry out corresponding treatment.

Protein's nails, also known as white nails, are caused by air entering the inner layer of nails due to illness or nail injury.

If the nails are not loose and there are no other abnormalities, you can apply nail polish or make crystal nails. Nails are developed from nail cells. When external force or improper nail care, the developmental function of some nail cells will be blocked.

In this case, white spots and fine lines will grow with the recovery of nail function, and grow with the outward growth of nails after a period of time, and finally we will dispose of them. The growth period of fingernails is 3 months, and toenails need 12 months.

What is the white thing appearing on the teeth? Is it the latest? If it is recent, it may be tooth demineralization. Brush your teeth more. Pay attention to oral hygiene. If it existed a long time ago, there is no good solution. Either make porcelain or use resin as a veneer.

What's with the red dot and white thing on the * *? You don't have sexually transmitted diseases, do you? Take the time to go to a regular hospital for a check-up, and you will be relieved.

What is the white thing in the foreskin? Next, please ask the experts from Tianlun Hospital in Changsha to introduce the white secretion in the foreskin. Inflammation of foreskin is a common disease, and infectious foreskin inflammation is more common in clinic. Infectious diseases are often caused by unclean * * *, infection with Candida albicans, trichomonas, chlamydia, mycoplasma, Neisseria gonorrhoeae or other bacteria; Non-infectious factors are mostly too long foreskin, insufficient cleaning, and unclean things between foreskin and * * * *, but it may also be trichomoniasis and other reproductive infectious inflammation. Recommended reading: What are the symptoms of acute foreskin inflammation? How to treat the common symptoms of inflammation? 1, annular ulceration * * * inflammation. Erythema can be seen on * * * and foreskin, which gradually expands into a ring, which can produce superficial ulcer surface. 2, Candida albicans * * * inflammation. The foreskin and * * * can be seen with erythema, smooth appearance and small herpes. Erythema has a clear edge, and there is erosion and exudation during acute attack. According to the patient's health and other different conditions, it is recommended to click online experts for one-on-one consultation. You can also make an appointment through the internet and enjoy the opportunity of priority treatment! & lt& lt& lt Click here to make an online appointment and enjoy preferential surgical assistance! 3, trichomoniasis. * * * There are papules and erythema, which gradually expand and have clear edges. Needle-sized blisters can be seen on the erythema, and finally a rotten surface is produced. 4. Acute superficial inflammation. At first, local flushing appeared, and * * * skin was red and swollen, and I felt burning and itching consciously. When you open the foreskin, you can see that the inside of the foreskin and * * * are congested and erosive, with exudates and even bleeding. Small ulcers can be seen after secondary infection, and there are smelly milky purulent secretions.

What is the white thing flowing in the rabbit's eyes? Maybe the eyes are inflamed.

Symptoms: Eyelids are red and swollen with viscous liquid or white pus.

Treatment: after washing eyes with normal saline, dry the surrounding hair; Use eye drops for treatment as prescribed.

Prevention: the environment is hygienic, and foreign bodies such as hair around the eyes are avoided.