Freezing damage. For flowers that are not tolerant to cold, they should be covered with straw or a shed in the shed at night; a storage tank can be dug every few meters in the center of the shed to keep warm in the storage tank; or some ash can be sprinkled on the ground to increase the ground temperature. 1°C-2°C.
Protect from moisture. In the long-term sealing, when there is a lot of rain and snow, a drainage ditch should be opened outside the greenhouse to reduce soil moisture. In addition, some ash can be sprinkled on the surface of the pot or the ground to increase heat absorption and moisture absorption and dehumidification. At the same time, attention should be paid to tightening the shed film to prevent water leakage from the top of the shed.
Prevent gas damage. Fully cooked organic fertilizer should be applied in the shed to minimize the amount of fertilizer. Clear and windless weather should be ventilated and ventilated in time to discharge hazardous gases inside the shed.
Prevent disease. The air humidity in the greenhouse is large. Special attention must be paid to prevent the occurrence of diseases such as powdery mildew, black spot, and anthrax. Anthracnose can be controlled by spraying 75% chlorothalonil 500 times at the beginning of the disease; powdery mildew can be controlled by spraying 1 to 1 ratio equal to 140 Bordeaux; 70% thiophanate-methyl can be sprayed with 1000 times. Drug control. Medications in the sheds should be avoided at sunny noon high temperature period, flowering period.
Protect from moisture. In the long-term sealing, when there is a lot of rain and snow, a drainage ditch should be opened outside the greenhouse to reduce soil moisture. In addition, some ash can be sprinkled on the surface of the pot or the ground to increase heat absorption and moisture absorption and dehumidification. At the same time, attention should be paid to tightening the shed film to prevent water leakage from the top of the shed.
Prevent gas damage. Fully cooked organic fertilizer should be applied in the shed to minimize the amount of fertilizer. Clear and windless weather should be ventilated and ventilated in time to discharge hazardous gases inside the shed.
Prevent disease. The air humidity in the greenhouse is large. Special attention must be paid to prevent the occurrence of diseases such as powdery mildew, black spot, and anthrax. Anthracnose can be controlled by spraying 75% chlorothalonil 500 times at the beginning of the disease; powdery mildew can be controlled by spraying 1 to 1 ratio equal to 140 Bordeaux; 70% thiophanate-methyl can be sprayed with 1000 times. Drug control. Medications in the sheds should be avoided at sunny noon high temperature period, flowering period.
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