What to pay attention to after watering peppers in winter

In winter, temperatures are relatively low. When growing peppers, many farmers only know that watering peppers in winter should be done scientifically, but they do not know what to pay attention to after watering. After watering in a winter greenhouse, the low soil temperature and high humidity often lead to poor pepper growth and frequent diseases. So what should be paid attention to after watering peppers in winter? Let's take a look together.

1. Raise the greenhouse temperature in time

After watering peppers grown in a winter greenhouse, farmers should promptly close the ventilation openings and find ways to raise the greenhouse temperature, generally about 2-3 degrees higher than usual, so that the rise in air temperature promotes the recovery of soil temperature and ensures the normal growth and development of the peppers. If the greenhouse temperature is relatively low after watering, then the soil temperature cannot recover in a short time, which will lead to poor root growth and development.

2. Remove moisture in time

After watering peppers in a greenhouse, the first thing farmers should do is to do a good job of moisture removal, and among these, raising the greenhouse temperature is the most effective way to effectively reduce air humidity. After closing the greenhouse ventilation openings, during the process of raising the greenhouse temperature, the humidity inside the greenhouse will also decrease relatively. After the greenhouse temperature rises, gradually open the ventilation openings to further ventilate and reduce humidity.

3. Prevent condensation on the greenhouse film

After watering peppers, because the air humidity inside the greenhouse is relatively high, and when the temperature inside the greenhouse rises, the greenhouse film is very prone to condensation, which affects the light transmittance of the greenhouse film. This will hinder the photosynthesis of pepper leaves and is not conducive to plant growth and development. When plant photosynthesis is insufficient, the plant synthesizes fewer nutrients and the yield is lower. You can apply anti-fogging agent or bean flour water to the greenhouse film and greenhouse, which can prevent condensation on the greenhouse film.

4. Pay attention when using pesticides

After watering, the humidity in the greenhouse is already very high. If pesticides are sprayed at this time, then the humidity in the greenhouse will become even higher. Therefore, 1-2 days after watering peppers, pesticide use should be avoided. If pesticide use is necessary, it is best to choose dust formulations or smoke formulations, so that while preventing and controlling pests and diseases, air humidity can also be effectively reduced.

5. Prevent gas damage

Many farmers often combine topdressing with watering, but when topdressing, the fertilizer contains a relatively large amount of nitrogen fertilizer. After these fertilizers are applied with irrigation water, they produce a large amount of ammonia gas. When the greenhouse is closed, the ammonia gas cannot be discharged in time, and it is very likely to damage the peppers, causing gas damage. Therefore, after applying fertilizer with irrigation water, it is necessary to ventilate appropriately and discharge harmful gases outdoors in time. In addition, when applying fertilizer with irrigation water, try to choose fertilizers with a lower nitrogen content. In winter, the use of such fertilizers is prohibited to avoid gas damage.

  The above is an introduction to what should be paid attention to after watering peppers in winter. I hope it can help you. To learn more related knowledge, please follow us.