Winter is a period of high incidence of gray mold of fruit vegetables. The climate conditions of low temperature, high humidity, and low light are very suitable for the occurrence of gray mold. Botrytis cinerea is caused by the infestation of Botrytis cinerea, and flowers, fruits, leaves and stems can be infected, especially in the flowering period and fruit setting period. The main prevention methods include the following two points:
1. For prevention and control of gray mold must be "a humidity control, two local defense two, three comprehensive management."
A controlled humidity. Humidity is the key to the occurrence of gray mold. To reduce the incidence of gray mold, we must first do a good job of controlling the humidity and do a good job of releasing moisture. According to the external conditions, open the cover in the morning and open the air outlet for 10-30 minutes.
The second prevention refers to the flowering period and the fruit setting period. The remaining petals and fruits are the most easily infested parts of Botrytis cinerea.
Third, we must use comprehensive measures to take various measures to control gray mold. Remove diseased leaves, diseased flowers, and diseased fruits in time, and take care to clear the diseased tissues and put them into plastic bags to prevent and control the spread of spores of the botrytis cinerea. The removed diseased bodies should be immediately taken out of the greenhouse for disposal. Disposal; The use of bumblebee pollination technology, the remaining petals is an important site of infection of gray mold, bumblebee pollination after the petals will naturally fall off, can reduce the source of gray mold infection.
2. Can be used in the seedbed with 50% thiram wettable powder mix soil application or water disinfection.
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