Pest control of upside-down admiralty

The pattern of the upside-down golden bell is very strange, just like a chandelier. Elegant and very beautiful, it is a good decoration at home. The upside-down Admiralty requires strict growth conditions, but it is mainly necessary to understand the growth attributes of the upside-down Admiralty. Otherwise, pests and diseases are prone to occur. So what are the common pests and diseases of upside-down Admiralty and their control methods? The following is a detailed introduction to the common diseases and insect pests of Hangzhou brocade and their control methods. Pest control in Admiralty: 1. Gray mold gray mold occurs in rainy weather or when nitrogen fertilizer is applied too much or light is insufficient. It mainly harms stems, leaves and flowers, resulting in water spots on the affected area. If not prevented in time, it will gradually expand into rotten hyphae covered with gray hairs, and in severe cases, the plants will die. Prevention and control methods: At the early stage of the disease, spray new drugs such as 65% zineb or 50% carbendazim 500 times, once every 7- 10 day for 3-4 times in a row, and pay attention to ventilation and light at ordinary times to make the plants grow well and improve their disease resistance. Cut and deal with diseased branches and leaves in time after the onset of the disease to reduce the source of the disease. 2. Powdery mildew mainly harms stems, leaves and buds. After infection, there is a layer of white powder on the surface, which makes the leaves shrink and the flowers smaller in severe cases. Control methods: pay attention to ventilation and lighting, increase the application of phosphorus and potassium fertilizer, and improve the disease resistance of plants. After onset, 70% Tobin solution was sprayed with 800-fold solution or triamcinolone acetonide or other appropriate drugs were sprayed with 2500-fold solution/kloc-0 every day for 2-3 times. 3. Root rot. Root rot is a physiological disease, which often occurs in the case of excessive watering, continuous rainy days and hot summer, leading to hypoxia, leading to black and rotten roots, ranging from yellow branches to whole plant death. Methods: After the onset, the roots were irrigated with 50% mancozeb 300 times solution. At the same time, pay attention to ventilation and cooling in summer, and the basin soil should not be too much. 4. Fusarium wilt control method: 10% antibacterial agent 40 1 solution 1000 times applied to soil for control. 5. Rust prevention and control method: spray 20% wilting cream for 400 times for prevention and control. 6. Bemisia tabaci mainly harms young leaves of Lodging Admiralty and sucks mesophyll juice; After hatching, the nymph is fixed on the back of the leaf and sucked to make the leaf curl and dry. In addition, the honey dew secreted by whitefly pollutes leaves, which is easy to cause soot disease. Control method: When pests are found, spray 40% omethoate 1000 times or 20% mirex 2000 times in time. Spray once every 7 days, 3~4 times in a row. Pay attention to both sides of the blade when spraying. 7. Aphids, red spider aphids, red spider and other pests mainly suck leaves, flower buds and mosaic fluid, which affects normal growth and development. If it is serious, the whole plant will die. Control methods: 1: 1000 dimethoate solution, 10% dipyridamole solution spray or 2000 times 50% chlorpyrifos solution spray. The lodging pests and diseases in Admiralty and their control methods are introduced. I hope that the flower lovers who cultivate it can gain something after reading it.