Vegetable growers should pay attention to the following points when changing membranes and routine maintenance: 1. Timely replacement of broken bamboo sticks: The bamboo sticks in the greenhouse should withstand the heavy pressure of the grasshoppers, and the load-bearing weight is greatly increased when the weather is heavy snowfall, which will cause part of the bamboo film. If it is crushed or broken, it must be maintained or replaced in time. For bamboo rafts that have been pressured off, they can be removed and replaced, or attached to a broken bamboo raft. The original broken part is wrapped with cloth to prevent it from being punctured. Only bamboo rafts that can continue to be used in rips can be wrapped with cloth. 2. The bottom of the steel wire on the gables is used to dispose of used tires or shoe soles, etc., to increase the stress area of ​​the steel wire and to prevent the wire from drawing into the gable. 3. Put rags, rubber hoses, PVC pipes, etc. on the sheds and front corners, or put plastic hoses on the film ropes to avoid direct contact between the film ropes and the shed film and reduce the pressure film ropes and sheds. The friction of the film slows down the wear of the film. 4. Be sure to shorten the time taken for the removal of the old membrane to the new membrane. Now farmers are a number of partners to help each other to change the membrane, can be prepared in advance to replace the bamboo raft and other preparations in advance, the new membrane in the shed, then remove the old membrane, immediately replace the need to replace the bamboo raft, the new membrane Overlay, thus shortening the change of film time. 5. Inferior membranes and old membranes have poor demistability in winter and are prone to dew when vented, resulting in high humidity in the shed, which is detrimental to disease prevention and control. It is recommended that the membrane on the venting belt be replaced once a year and replaced with a membrane with good quality and good mist-removing ability. 6. When the vegetable farmer pulls the haystacks, most of them will be shed from the gables, which will easily break the shed film here, and the shed film on the gables will directly contact the soil, which is more likely to be eroded and affect the insulation and service life of the greenhouse. . It is recommended to cover the old grass weeds on the two hills immediately after the replacement of the shed film and press them with bricks or old cement pillars to prevent the vegetable farmers from knocking the shed film down when they come in and out, and on the other hand to prevent vegetable farmers from raining and snowing. The upper and lower sheds are slippery and easy to walk.
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