Fertilization methods of edible fungi and control methods of bacterial soft rot of Cymbidium

Symptoms: damage to leaves and stems. Starting from the leaf stem, it develops along the leaf vein, showing dark green water stains, followed by the soft decay of the whole leaf.

Conditions of onset: finishing in overcast and rainy days or when the dew is not dry, or insect injuries are often serious.

Pathogen: Euclid, carrot Euclid. It belongs to bacteria. The cell is short rod-shaped, with 2-8 flagella per week. Gram staining was negative, the suitable temperature for growth and development was 2530 ℃, the highest was 40 ℃, the lowest was 2 ℃, and 50 ℃ died in 10 minutes.

Route of transmission: the bacteria overwintered in the soil with the disease remains. The following year, it was spread by Rain Water, irrigation water and insects, and invaded from the wound. After invading, the bacteria secrete Pectinase to dissolve the glue layer, resulting in cell disintegration, water overflow and decay.

Prevention and control methods:

Remove the diseased plant in time and disinfect it with lime. Prevent the wound caused by folding when transplanting.

If necessary, spray 300 times 400 times of basic copper sulfate suspension or 50% copper succinate wettable powder, 72% agricultural streptomycin sulfate soluble powder 4000 times, 77% kill wettable particulate powder 500x, 47% Jiarinong wettable powder 800x 1000x, 56% landscape disperse microgranule 800x liquid, once every 10 days, control 2 times continuously.