First, improve lighting conditions
In the case of cloudy snow and low temperature weather, an additional light can be added in the shed, and a light curtain can be attached to the rear wall to increase lighting in the shed. Clean the film and improve the light transmittance of the film. Strengthen pruning management, remove excessive leaves, especially the inner leaf, improve the light rate of leaves and buds, reduce nutrient consumption, improve photosynthetic efficiency, and thus increase the fruit setting rate.
Second, reduce the humidity in the greenhouse
Sweet pepper in the pollination period of the humidity is more demanding, encounter low temperature and even cloudy days, shed indoor humidity is too large, easily lead to sweet pepper pollen development, decreased activity, can not be completed normally pollination. Before and after noon, according to the weather conditions, you can let the air cool and dehumidify and reduce the humidity in the shed as much as possible.
Third, spraying boron fertilizer and anti-dropping agent
Boron is one of the essential elements for the flower bud differentiation of sweet pepper plants. The lack of boron fertilizer can easily lead to poor flower bud development. Spraying boron-containing liquid fertilizer before flowering can provide plants with nutrients, improve stress tolerance, and reduce flowering and fruit drop. In addition, 25-30ppm anti-dropping agents can also be sprayed, which works well.
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