Pruning is the most basic farming operation for vegetable farmers. Pruning is beneficial to the ventilation and light transmission of plants, avoiding the consumption of nutrients, reducing the occurrence of diseases and promoting root growth. However, in the greenhouse vegetable production, many vegetable farmers do not pay attention to the humidity conditions in the shed when they pruning the vegetable crops. When the humidity in the shed is high, the disease is often caused, especially bacterial diseases.
Therefore, it is necessary to choose the appropriate time for pruning and snoring. What should you pay attention to?
First of all, pruning should be avoided in an environment where the humidity in the shed is large before the morning is ventilated.
Under normal circumstances, before 9 am, the shed is not ventilated, and the humidity is large. If the pruning is smashed at this time, the wound is difficult to dry and susceptible to bacterial diseases. Therefore, pruning is best done after ventilation in the morning.
Secondly, pruning should be avoided on rainy days.
The humidity in the rainy shed is high for a long time, and it is most likely to cause bacterial diseases. If the pruning is snoring during this period, the wound left is extremely susceptible to illness. Therefore, vegetables must choose sunny weather when pruning.
Again, pruning should be avoided immediately after watering.
1-2 days after watering, the humidity in the shed is relatively large, and the water content of the plant is also high. The wound produced by the pruning is relatively large and difficult to heal. It is best to carry out the drying in the shed after 3 days of watering.
In addition, after the pruning, the azoxystrobin, chlorothalonil and other sprays can be used, and the stems are mainly sprayed to prevent the occurrence of diseases.
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