In the Pinggu District, the peach trees of Myzus persicae are breeding for 6-8 generations a year, and then transferred to other hosts. The eggs were used for wintering at sprouts, bud scales, branchlets, etc. If the cockroach, clams live in buds, leaves, shoots and flowers sucking damage. The damaged leaves are curled and shrunk to the back and cannot be used for photosynthesis. They are severely yellow and fall off. The growth of the damaged sections of new shoots is inhibited, blind spots are formed, and no flowers can be formed. When the flowers are severely damaged, the yield is reduced by more than 50%. The body excretes mucus and induces mildew. The Pinggu District Plant Protection Station has two system monitoring stations in Taihu Village of Wei and Taoyuan of Chen Tai. It began to be found in late April. On May 9, the amount of maggots rose rapidly, and the peach planting rate reached 30% to 80%. Each Taoyuan investigated 25 branches of 5 trees randomly. There were 12 and 8 litchi twigs respectively. The number of worms was 1,421 and 350 respectively. The number of heavier single-branches occurred was as high as 450. At present, the occurrence of Myzus persicae is in a sharp upward trend. Once the number of Myzus persicae increases rapidly, the blades can wrinkle within a few days, which will greatly affect the yield of peach trees. Wang Guonong quickly carried out prevention and control according to local specific conditions. Chemical control: 10% imidacloprid wettable powder 3000 times spray or 50% anti-inferior wettable powder 2000 times. 5% sherbet essence 70-100 ml/mu or 0.5% matrine 86-115 ml/mu. Pay attention to the protection and use of natural enemies, such as ladybugs and grasshoppers. Respircare oxygen concentrator contains 3-liter machine (AO3/AO3W) and 5-liter machine (AO5/AO5W). Oxygen is produced by molecular sieves, can provide 1-5L/min oxygen flow with oxygen concentration ≥93%. It has small volume, low noise and long service life advantage, is suitable for oxygen therapy of homecare. 5L Oxygen Concentrator,Oxygen Concentrator Machine,Cabinet Oxygen Concentrator,Oxygen Concentrator Equipment Shenyang RMS MEDICAL TECH CO.,LTD , https://www.medicalrms.com
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