What are the precautions for watering peppers in winter?
Peppers are a common seasoning vegetable in our lives and are cultivated all over the country. Compared with other vegetables, they have stricter water requirements and are a crop that is neither drought-tolerant nor waterlogging-tolerant. So how should watering be done when growing them in greenhouses in winter? Follow the editor to take a look at the precautions.
1. Do not water blindly
When growing peppers in winter, the temperature is relatively low, so greenhouses are mostly used. The greenhouse space is relatively enclosed, and soil moisture evaporation and infiltration are slower than in open-field cultivation. Therefore, if too much water is applied, excessive soil moisture will affect the coordination of fertilizer, water, air and heat in the soil. So when watering peppers in winter, it must be determined according to the actual growth conditions of the plants and the climate, so as to water reasonably.
2. Avoid watering in the afternoon
When indoor and outdoor temperatures are both relatively low, it is best to water peppers before 10 a.m., and it is advisable to control the water temperature at around 20 degrees. Watering in the afternoon or evening means the soil temperature cannot rise, and the humidity in the greenhouse is relatively high, making it very easy to contract pests and diseases. Also, on the day before watering each day, protective pesticides should be sprayed in time. If rain or snow occurs on the second day after watering, smoke agents can be lit for protection.
3. Avoid watering after long cloudy days suddenly turn clear
There are many cloudy days in winter, and the air temperature and low temperature in the greenhouse are both relatively low. If it suddenly turns clear, the air temperature rises relatively quickly, but the soil temperature lags behind the air temperature by two hours in recovering. At this time, root activity is still relatively weak. If large amounts of water are poured at this time, causing the soil temperature to remain too low for a long time, root water absorption will be affected, and peppers are prone to physiological dehydration symptoms.
4. Do not water on low-temperature rainy days
In southern regions, there is more rain in winter. At this time, both air temperature and soil temperature drop relatively quickly. If watering is done at this time, it will further lower the air temperature and soil temperature, and will also cause water accumulation, root rotting and induce pests and diseases, greatly affecting the growth and development of peppers. In mild cases, yield is reduced; in severe cases, there is no harvest at all.
The above is an introduction to the precautions for watering peppers in winter. I hope it can help you. If you want to learn more related knowledge, please follow us.