How can overwintering sweet peppers achieve high yields? The latest key techniques

In the overwintering management of sweet peppers, various problems are often encountered, such as few fruit set, low yield, poor quality and severe disease, and to avoid these problems, several points need to be done well. Let's take a look together below.

1. Pruning

When sweet pepper plants reach 40 cm in height, they should be hung and supported in time. Each plant can be divided into two main branch stems, and other side branches should be removed, so that nutrients are concentrated on the growth and development of the main branches, laying a solid foundation for high yield. The first pepper (gate pepper) should be removed in time to promote normal plant growth. In addition, old leaves and diseased leaves on the lower part should be removed as early as possible, which not only reduces unnecessary nutrient consumption, but also increases ventilation and light penetration, promoting robust plant growth.

2. Fertilizer and water

Before sweet pepper transplanting, sufficient base fertilizer should be applied. The base fertilizer is best as decomposed farmyard manure, generally 1000-1500 kg per mu. When the base fertilizer is sufficient, do not apply additional fertilizer before the sweet pepper sets its first pepper (gate pepper). When the second pepper grows to the size of a walnut, apply animal manure water at 300-400 kg per mu plus about 10 kg of potassium sulfate compound fertilizer in time to promote rapid fruit expansion. After that, fertilize once each time a fruit is picked, so that the plant bears more fruit. In deep winter, a full-element water-soluble fertilizer can be applied.

3. Light

When low winter temperatures permit, uncover the coverings early and cover them late to increase light duration. In addition, promptly clean dust, firewood, grass and other debris on the greenhouse film to increase light intensity and raise the temperature inside the greenhouse, so that the plants grow in a suitable temperature environment. At the same time, hang reflective curtains on the back wall to increase light intensity and raise the greenhouse temperature. Prune and remove side shoots in time, and remove old, weak, diseased and disabled leaves in time, which has a good effect on enhancing light and increasing ventilation.

4. Pest and disease control

The insect pests of overwintering sweet peppers in winter include aphids, whiteflies, thrips, etc. Control should be targeted. For whiteflies, Muwangte, Puchiling, etc. can be used; for aphids, Pichonglin, etc. can be used; for thrips, Jijing can be used. The main diseases of sweet peppers in winter include viral disease, gray mold, phytophthora blight, anthracnose, leaf mold, root rot, damping-off and many others. Pay attention to regulating the temperature and humidity of the greenhouse to reduce the disease incidence. For various diseases, apply the right remedy and control the disease as soon as possible to prevent further spread.

  The above is an introduction to how to promote high yield in overwintering sweet peppers. We hope it can help you. If you want to learn more related knowledge, please keep following us.