Prevention and Control of Orchid Stem Rot and Edible Fungi Diseases and insect pests

Orchid stem rot is a kind of orchid disease that causes serious losses to production, which can be induced by high temperature and high humidity for a long time. Prevention should be given priority to in production. The environment of orchid cultivation should be kept clean and well ventilated; orchids, orchid pots and plants must be disinfected before potting, and the plants should be well drained; wounds in orchids should be avoided, especially to prevent infection caused by insect bites in the soil, and insecticides can be applied in the soil; discarded and destroyed the diseased seedlings and plant materials and pots used in production. At the initial stage of plant infection, if timely measures are taken to remove the disease spot, the plant can still be retained, but because of the reduction of leaf area, it is bound to affect flowering; if it is not found in time, the best period of prevention and treatment will be missed, coupled with the rapid development of the disease, the possibility of cure of the disease is extremely low. Fungicides + tree protection generals can be used for prevention and control. Subsequently, plant cellular immune factors were sprayed to prevent and enhance plant stress resistance, which could make virus DNA break and apoptosis. Strong immune function, induce interferon and active interleukin, inhibit residual virus replication, and promote plant positive energy ecological growth.