How to prevent sweet pepper from falling flowers in summer

How to prevent sweet pepper from falling flowers in summer? Please introduce the method of summer sweet pepper flower drop is mainly caused by the following factors: 1, the temperature reason if the temperature is too high (higher than 35 ℃), it will drop flowers and fruits due to poor pollination and fertilization caused by underdeveloped floral organs or dry stigma. In addition, the summer night temperature is high, the plant is easy to grow, vegetative growth will lead to falling flowers and fruit. Mud splashing can be taken to reduce the temperature in the shed during the day, and open vents at night to reduce the night temperature. The suitable temperature control during flowering period is 20: 27 ℃ in daytime and 15: 20 ℃ at night. 2. For nutritional reasons, the growth of sweet pepper needs sufficient photosynthate and fertilizer and water. Dry soil and insufficient water will inhibit the absorption of fertilizer and water by plants, resulting in falling flowers and fruits. If there is too much water, the soil permeability becomes worse, which hinders the root respiration and growth, and even retts the root, which will lead to flower and fruit drop. It is best to keep the soil dry and wet. In addition, the application of fertilizer should be comprehensive in nutrients and should be combined with nitrogen, phosphorus and potassium. Excessive or insufficient nitrogen fertilizer or lack of phosphorus and potassium will lead to flower and fruit drop due to lack of nutrients or malnutrition. In particular, it should be reminded that after sweet pepper enters the fruiting period, the amount of potassium required increases rapidly, about twice as much as nitrogen, so the fruiting period must pay attention to the use of potash fertilizer. 3. Diseases and insect pests and causes of drug damage virus disease is the number one killer of over-summer sweet pepper. After infection with virus disease, plant atrophy or dead top often occurs, resulting in flower and fruit drop. In view of this situation, the insect source of infectious virus disease should be eliminated first, which can be controlled by imidacloprid and Yichuanjing, or combined with spraying virus A, Ningnanmycin and so on. In addition, the summer temperature is high, the concentration of agents should be correspondingly lower, so as not to cause drug damage. Click to get more sweet pepper planting techniques click to get more vegetable planting techniques