Abnormal long-term high temperature and humidity are the main factors leading to leggy. Seedlings easily form tall seedlings, resulting in long internodes, easy lodging, poor flower bud differentiation, the result is small and thin. During the growing period of the vegetables, the purpose of cooling can be achieved through the use of ventilation, shade nets, cooling agents, water spray, grass cover curtains, splashing mud and other measures, and it is better to provide ventilation openings on the northern wall. The optimum temperature for cucumber seedlings is 25°C~28°C during the day and 13°C~15°C during the night. The melon period is 28°C~32°C during the day and 13°C~17°C at night. In this range, the temperature is preferably lower. Growth inhibition During the growth period of cucumber, if it is above 35°C for a long time, photosynthesis will be difficult to perform, that is, the respiration is greater than photosynthesis, which means that the nutrients produced are not as much as consumed. When the night temperature is too high, the respiratory consumption is more intense, the cucumber grows weaker, it is prone to premature aging, and the yield is low. Abnormal melons have increased photorespiration of cucumber due to high temperature, and the production and transportation of photosynthetic products are hindered. The supply of organic nutrients is reduced, and it is difficult for cucumber cucumbers to sit. Big melons grow poorly, and they are easy to produce thin-shouldered gourds and pointed gourds. Variety of miscellaneous melons increased, resulting in a significant reduction in quality and commerciality. The lack of high temperature causes the evaporation of the soil to increase, and the transpiration of the leaves is strengthened. Due to the soil drought, the water supply is insufficient, and various elements such as phosphorus and calcium have poor mobility and are prone to physiological phosphorus deficiency and calcium deficiency problems. In addition, iron deficiency, zinc deficiency, and yellowing can also be caused in the top leaves. When the leaf burns under high temperature, low humidity and strong light, the leaves of cucumber leaves are prone to leaf cell necrosis and “dry edge†phenomenon, especially when the plants are subjected to cold injury and freezing injury. Once high temperature and strong light are encountered, the leaves will inevitably lose water quickly. Large areas of scaly white dry spots appear on the leaves. Note: This symptom cannot be diagnosed as bacterial leaf blight. In the high-temperature period before and after noon injury, it is easy to produce phytotoxicity. Although the effect is rapid when the temperature is high, it is also prone to phytotoxicity. Such as dichlorvos, insecticidal ingredients of the isoproxil component, pyrimethanil, sclerotia net, B-phosphorus aluminum as a fungicide. Dietary Supplement,Bio Herbal Sex Power Coffee,Natural Anti-Cancer Capsule,Natural Body Energy Health Supplement Chengdu Jingke Trading Co., Ltd. , https://www.jkherb.com