With the increase in temperature and the extension of sunshine time, greenhouse vegetables have gradually entered a high-yield period. During this period, the management of greenhouse vegetables mainly focused on the following three points. Temperature management The temperature rises in spring, but the temperature difference changes greatly, usually accompanied by the occurrence of cold spring, sunny and good weather, and more windy weather. Frequent problems: 1. The night temperature is high, the temperature difference is small, and the plants are lengthy, which mainly appear in the newly built greenhouses with good heat preservation. Although the temperature difference is large, the overall temperature is not low, coupled with the increase in fine weather and the prolonged sunshine time, there is a lot of heat in the shed during the day, and due to the good heat preservation, the heat dissipation is slow at night, resulting in high night temperature. The plants are elongated, and the nutrition imbalance occurs, and the flowers and fruits are fallen. 2. Urgent ventilation, chaff and dry leaves: this is mainly caused by windy weather, large temperature difference between inside and outside the shed, and improper ventilation operation. Mitigation suggestions: 1. Balance the temperature in the shed and maintain a reasonable temperature difference: on the one hand, according to the weather and shed body conditions, pull it early and put it late to avoid excessive temperature in the shed; at the same time, keep the temperature difference between the highest temperature during the day and the lowest temperature at night at 15-20℃. 2. Reasonable ventilation: slow ventilation, especially in windy weather and high temperature in the shed. At the same time, make good use of the windshield film under the vent. Grow the root system Reasons for poor root system: Good root system is the basis for high yield of vegetables. There are generally two reasons for poor root system of vegetables in early spring. 1. The root system "starves" Roots grow leaves and leaves roots. As the yield increases, the nutrient consumption of the fruit increases. The nutrients produced by the leaves cannot be supplied to the root system in time. The root system gradually weakens due to malnutrition, especially in the middle and late stages of fruiting or when there are too many fruits in the short term easy to appear. 2. Improper fertilizer and water As the weather turns warmer, farmers’ fertilizer and water consumption increases, and root damage often occurs in production due to improper watering time, excessive fertilizer and water and other factors. Mitigation suggestions: 1. Strengthen fertilizer and water management to avoid root damage by fertilizer and water. 2. Pay attention to the maintenance of the root system, and apply a rooting agent to grow the roots in time. Balanced nutrition Nutritional imbalance performance: On the one hand, due to increased yield and increased nutrient consumption, plants are prone to malnutrition, which mainly occurs in vegetables in the middle and late stages of fruiting. On the other hand, due to the increase in temperature, the night temperature in the shed is high, the temperature difference is small, the plants are prone to lengthening, and the nutrition is out of balance. This mainly occurs in the vegetables that are just beginning to bear fruit. Mitigation suggestions: 1. Strengthen management, balance the temperature in the shed, and avoid excessive growth of good sheds and new vines. 2. Reasonably retain fruit and balance nutrient supply. 3. Reasonably apply water-soluble fertilizer and foliar fertilizer according to the growth of the plant. When the plant is prosperous, use high-potassium fertilizer, and when the plant is weak, it is balanced and foliar fertilizer. Disclaimer: Some articles on this website are transferred from the Internet. If the legal rights of a third party are involved, please inform this website for processing. phone Bacillus Subtilis,Animals Feed Additive,Green Feed Additive,Water Soluble Glyphosate CANGZHOU HUAYOU IMPORT & EXPORT TRADE CO., LTD. , https://www.huayoutrade.com