There are many reasons for sweet pepper falling flowers and fruits. How to prevent sweet pepper falling flowers and fruits?

There are many reasons leading to the flower and fruit drop of over-summer sweet pepper, such as the release of diseases and insect pests, high temperature, fertilizer and water, improper use of drugs, will lead to the flower and fruit drop of sweet pepper.

Sweet pepper

First, the reason of temperature: if the temperature is too high (higher than 35 ℃), it will drop flowers and fruits due to poor pollination and fertilization due to underdevelopment of floral organs or dry stigma. In addition, the summer night temperature is high, the plant is easy to grow, vegetative growth will cause sweet pepper flower and fruit drop. Mud can be splashed during the day to reduce the temperature in the shed, open vents at night to reduce the night temperature. The temperature at flowering stage is 20 ℃ in daytime and 20 ℃ at night.

Second, nutritional reasons: the growth of sweet pepper needs photosynthate and fertilizer and water. Dry soil and insufficient water will inhibit the absorption of fertilizer and water by sweet pepper, resulting in falling flowers and fruits. With too much water, the soil permeability becomes worse, which hinders the root respiration and growth of sweet pepper, and even retts the roots, resulting in falling flowers and fruits. It is better to see the soil dry and wet. In addition, fertilizers should be comprehensive, with the combination of nitrogen, phosphorus and potassium, too much or insufficient nitrogen fertilizer, and lack of phosphorus and potassium. Sweet peppers will drop flowers and fruits due to lack of nutrients or malnutrition. Special reminder: sweet pepper into the fruit stage, the amount of potassium increased, about twice as much as nitrogen, so the fruit period, pay attention to the application of potash fertilizer.

Third, disease and insect damage, drug damage causes: virus disease is the number one killer of over-summer sweet pepper, after infected with virus disease, sweet pepper plant atrophy or dead top phenomenon often occurs, resulting in flower and fruit drop. In view of this situation, we must first eliminate the source of infectious virus diseases, which can be controlled by imidacloprid, Yichuanjing, or combined with spraying virus A, Ningnanmycin, and so on.

In addition, the summer temperature is high, the chemical concentration is lower, so as not to cause drug damage to sweet pepper.