The leaves of Cymbidium have irregular yellowish-brown patches, and the leaf tip is withered, is it a disease or is it unaccustomed to soil and water?

It should be anthrax, a common disease of Cymbidium, and a serious harm to flower beds in the south, which has also occurred in Beijing, Tianjin and other places.

Prevention and treatment methods: there are not many diseased leaves in the early stage of ①. After cutting off the diseased leaves, you can spray 50% Dysenamine water solvent 800 times or 75% chlorothalonil wettable powder 50 times 800 times to prevent the development of the disease. Spray together with flowerpots, soil and plants, once every 7 days and 4 times in a row.

In ② cultivation management, 0.5% Bordeaux solution was sprayed every 10-15 days to prevent the disease.

③ flower bed or greenhouse cultivation, before the placement, the site should be sprayed with 65% Dysen zinc wettable powder 400x liquid, sterilization, reduce the incidence of disease, especially in the site where Magnolia has been planted for many years.

The newly introduced varieties of ④ should be quarantined and cultivated separately from the original cymbidium group, and when there is no disease, they should be put into the community for maintenance so as not to bring germs.