To prevent and treat cucumber diseases in greenhouses, smoked method is used instead of spraying. Not only is the plant's wide range of pesticides, but also the pesticide residues in fruits and Vegetables are low, and the effect is very good. The specific method for smoking is to use 75% chlorothalonil flue-curing agent (powder) per acre area, mix with appropriate amount of dry sawdust or dried chaff, place 6 to 8 points, and seal the shed. The medicine was lit in the evening and the smoke was fully smoked at night. It should be noted that because Chlorothalonil is a protective agent, the first smoke should be held before the onset of illness, and then smoked once every other week to effectively prevent cucumber downy mildew, gray mold, anthrax and powdery mildew Wait.
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