Litchi is one of the four major fruits in the southern region, with sweet and juicy flesh and abundant vitamins.

In the process of planting litchi, it is often damaged by diseases and pests, such as litchi anthracnose, downy mildew, and litchi stem borers.

荔枝炭疽病、霜霉病是荔枝常见病害，高温高湿天气有利于荔枝炭疽病、霜霉病的发生，同时病原菌可借助雨水传播。

如果防治不及时，这些病害会导致嫩梢受害，发生严重的会导致荔枝落花、落果，将直接影响荔枝产量和品质。