1. Phytophthora: the affected area of the disease is large, and the disease may occur in leaves, branches, shoots and fruits. At first, there will be watery spots, and then gradually expand, in serious cases, it will lead to dry. It can be sprayed with Bordeaux solution, mancozeb and carbendazim for 3-5 times.
2. Leaf spot: it mainly damages the leaves. The first spot is light brown, and then it turns black gradually. The improvement of soil part can increase the disease prevention ability of trees, and carbendazim spray can be used after the disease.
3. Anthrax: this disease will affect the fruit part. At the beginning, there are spots on the surface, and then gradually expand. After the disease, Bordeaux solution and mancozeb can be sprayed.
4. Root rot: it mainly damages the younger plants, and the roots may rot, and the newly grown leaves are yellow. After finding the disease, the roots should be treated and the soil should be disinfected in time.
1. Moth: it will bite the leaves, seriously affecting the appearance. After discovery, trichlorfon can be sprayed at seedling stage, and then light can be used to trap and kill.
2. Sangtianniu: it will tear the skin and leaves of branches and leaves, causing serious impact. Artificial killing shall be carried out first, and then Omethoate or insecticidal essence shall be used for spraying.