How to Prevent and Control Diseases in Home-Grown Orchids

How to prevent and control diseases in home potted orchids? The author believes the following measures can be taken: Strengthen cultivation. Orchids need an environment with good ventilation and air permeability, smooth drainage and moderate light. Taking home potted orchids as an example, the orchid pot chosen should have a large space at the bottom, good air permeability and no water accumulation; the soil for growing orchids is best made by mixing pond mud with fired soil, slightly acidic; when the orchid plant is moved into the pot, it should be placed in a well-ventilated place with moderate light, to reduce and prevent the occurrence of orchid diseases. When watering orchids, different water control should be carried out according to the seasons, so as to keep the soil in the orchid pot slightly moist, but water accumulation should be avoided. Choose good varieties to reduce sources of infection. There are many orchid varieties, and their disease resistance varies greatly. Selecting good varieties and cultivating strong seedlings to reduce the spread of disease sources is an effective way to prevent and control orchid diseases. Fertilize reasonably and supplement nutrients in a timely manner. Fertilizing home potted orchids should follow the principle of "better to lack than to overdo, better to be dilute than concentrated", and fertilization should be done at the appropriate time. When fertilizing orchids, avoid both insufficient and excessive fertilization. Promptly remove diseased leaves and diseased plants, and combine prevention with treatment. Whenever leaf spot diseases such as black spot, anthracnose, and white silk disease are found on orchid leaves, they should be promptly cut off and burned or deeply buried. If rotten orchid plants are found, they should also be removed and handled. In addition, every 10 days, use equal-amount Bordeaux mixture or pesticides such as Miebingwei and carbendazim, or spray the orchid leaves with water infused with plant ash, spraying 2 to 3 times in succession, which has a good effect on preventing orchid diseases.