1. The ground in the shed is levelled, slightly higher in the north and south, and then covered with a thin film to prevent the spread of germs and the growth of weeds. 2, greenhouse greenhouses in advance deduction film, close the shed to increase the temperature for disinfection and sterilization, the temperature inside the shed up to about 50 to 60 degrees Celsius, generally in the case of sunny days, about 7 days to achieve the effect of disinfection and sterilization. 3. Disposal of lime water on corners, dead ends, iron wires, bamboo poles, etc., which are easily overlooked in the greenhouse, and disinfection and sterilization with chlorothalonil aerosols. 4. Leave a gap of 10 cm in the middle of the cultivation bag placed between the north and the south as a drain. This drain is inclined 5 to 10 mm per meter so that excess water can drain away from the drain.
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