Prevention and control of diseases and insect pests in industrial soilless cultivation of Cymbidium

1. Diseases: the common diseases in the cultivation of Cymbidium are soft rot, root rot and anthracnose. Soft rot generally occurs in the high temperature and rainy summer, at this time, such as poor ventilation in the greenhouse, and even Rain Water dripping on the plant, causing the disease, entering the rainy season, at this time in the gentleman orchid greenhouse every 10 days or so, spraying 2000 times of people with streptomycin to prevent, and strengthen ventilation; at the initial stage of the disease, spraying 2rel Dasheng MMu45 fungicide for 3 times. When root rot occurs, the substrate should be changed, the dead roots should be removed, and the dead roots should be cultivated in fresh river sand until new roots grow. 800 times mancozeb fungicide can be sprayed to control anthrax at the initial stage of anthrax.

2. Insect pests: the common diseases in the cultivation of Magnolia include slugs and shell insects. Shell insects mostly occur in a dark and unventilated environment, generally a small number of occurrence, can be brushed off with a softer brush. When slugs bite the young leaves and roots of plants, they can be caught in the early hours of the morning or trapped by beer in a shallow dish. When a large number of slugs occur, they can be killed with 800-fold wormwood irrigation roots.