Symptoms The growth environment of greenhouse vegetable cultivation is relatively closed, the water evaporates slowly, and the high humidity phenomenon often occurs in the shed. This creates conditions for the occurrence of various diseases. High humidity and low temperature can also lead to plant rooting, stagnation, and severely affecting growth and development. . The main cause of the obstacles was the excessive watering in the shed and the delay in air release. After watering, it was even cloudy, the evaporation of soil moisture was reduced, or long-term rain and snow weather or high groundwater levels were encountered, causing soil and air in the shed. The increase in humidity affects the absorption of nutrients by roots and facilitates the infection and spread of germs. Precaution Control soil moisture: cucumbers, tomatoes, and peppers require less water in the early stage of growth, and should not be watered too much, otherwise it is not conducive to controlling the air humidity in the shed, nor is it conducive to the improvement of the ground temperature. Timely ventilation: Ventilation is the main measure of dehumidification. It should be properly ventilated around noon on sunny days. However, attention should be paid to temperature changes. If the temperature drops too fast, vents should be closed in time to prevent the vegetables from freezing. Exhaling winds are mainly wind and waist winds, and they cannot be used to prevent injury. Covering with plastic film and irrigation under film: Covering with plastic film can reduce the evaporation of soil moisture, which is an important measure to reduce the humidity in the greenhouse. When watering, it adopts irrigation under the irrigation of membranes to prevent water evaporation, reduce indoor air relative humidity, and prevent soil compaction. Watering should be carried out in the morning. After watering, the air should be released and the water should not be poured in the afternoon. Watering should pay attention to the weather forecast and avoid watery conditions after watering. The use of smoke agents: try to use smoke agents to prevent vegetable pests and diseases in order to reduce indoor air humidity. Garlic Bulb,Fresh Garlic Bulb,Fresh Softneck Garlic Bulb,Garlic Bulbs Jining Yuanheng International Trading Co.,Ltd , https://www.china-garlic-exporter.com
High humidity barrier prevention measures
In greenhouse vegetable cultivation, the low-temperature and high-humidity phenomenon often occurs in the past two years, resulting in overwintering and poor growth of vegetables in early spring, and the disease is aggravated and the yield is reduced. Therefore, it is necessary to prevent or promptly remediate in advance and reduce the damage caused by disasters.