How to control grape rust tick (felt disease)?

How to control the three most common grape pests with harmless techniques such as frequency vibration insecticidal lamp, and what are the three most common grape pests? Which is the most harmful?

1. Absent sarcophagus mite: commonly known as felt disease and grape rust tick. It is distributed in the northern region and various grape producing areas, causing certain losses every year. (1) Harmful symptoms: it mainly harms leaves, and in severe cases, it also harms shoots, tendrils, young fruits and other parts of grape branches; In the late stage, the front of the leaf presents round or irregular necrotic spots. The main leaf is injured. After injury, white spots appeared on the back of the leaves, gradually expanding, and bubble-like bulges appeared on the front of the leaves. (2) Control method: 1 to prevent the spread of seedlings. Seedlings introduced from epidemic areas must be disinfected with warm soup. Soak in hot water at 30-40℃ for 5-7 minutes, and then soak in hot water at 50℃ for 5-7 minutes to kill the latent scabies. 2. Mark the occurrence plants in the growing season, and do not take off the seed strips for seedling raising from the occurrence plants to prevent proliferation. Newly bought grape seedlings or cuttings must be carefully quarantined and disinfected. 3, found the victim, immediately cut off and buried. 4. Clean the vineyard thoroughly after autumn. Collect the diseased leaves and burn them.

Second, the green blindness of the caterpillar: it occurs all over the country except in a few areas such as Xinjiang and Tibet. It mainly harms the leaves, flowers, tender shoots and tender ears of grapes by pricking and sucking. Insects are small in size, occur early, lie in the daytime and come out at night, and their initial harm is not obvious, so they are easy to be ignored. Often due to untimely control, leaves are damaged and photosynthesis is affected. (1) Harmful symptoms: the injured leaves are reddish brown with needle-like necrosis. With the growth of leaves, irregular holes and folds appear in the damaged parts. (2) Control mode: 1. Combined with clearing the garden in winter, weeds were eradicated, the skin was scraped off and the overwintering eggs of green blind stinkbug were eliminated. 2, grape intercropping with cotton and vegetables, strengthen the prevention and control of crop diseases and insect pests around grapes, thus reducing grape pests. 3. Protect natural enemies, such as parasitic mites, lacewings, stinkbug parviflora and parasitic bees, and reduce the frequency of drug use. In addition, crops such as alfalfa, broad beans and peony can be planted around the orchard. 4, sweet and sour basin. Sweet and sour liquid (250g of brown sugar, 500g of vinegar and 5kg of water) is put into waste cans and bottles and hung on trees.

Third, tobacco thrips: grape tobacco thrips, also known as thrips. Widely distributed in China's grape producing areas, the harm to grapes has become more and more serious in recent years. (1) Harmful symptoms: mainly sucking the juice of grape buds and young fruits. Grape young fruit is damaged, and dark brown damage spots appear on the surface of early fruit, which are slightly concave, nearly round or strip-shaped; As the fruit expands, it gradually turns yellow-brown and slightly bulges; Cracks will appear after the expansion period, and seeds will be exposed in severe cases; Small grayish yellow spots appear when the leaves are damaged, which seriously affects the growth and development and reduces the yield. (2) Control measures: 1. In winter, the residual plants, fallen leaves and host weeds in the field are thoroughly removed to reduce the source of overwintering insects. 2. Pay attention to the protection and utilization of natural enemies. According to our preliminary investigation, there are many kinds of natural enemies of tobacco thrips. The common predatory natural enemies are striped thrips, six-spotted thrips, stinkbug floret, stinkbug hickory, etc., which have a certain control effect on the occurrence of tobacco thrips.

?