①Enhancing the ventilation of the greenhouse. Poor ventilation conditions in the greenhouse. In the case of occlusion, the temperature is high, the humidity is high, and the carbon dioxide content gradually decreases, which directly affects the photosynthesis of flowers and makes them poorly absorb water and nutrients. Death due to unbalanced respiratory consumption and supply and insufficient nutrient supply. Therefore, retrograde ventilation should be timely under the conditions of warm greenhouse. When the indoor temperature exceeds the required temperature for flower growth. Open doors and windows in time to allow indoor and outdoor air to circulate and reduce the temperature and relative humidity in the greenhouse.
②Improve lighting conditions
1) Most of the greenhouse materials have poor light transmittance, so that the intensity of light is weakened and the light quality is also poor. In addition, the density of greenhouse flowers is large, and the shading situation is serious, which is unfavorable to the growth of light-loving plants, with slender branches and leaves, and flower color. , The leaf color becomes lighter. Therefore, we should try our best to improve the greenhouse light conditions. When constructing the greenhouse, choose a place with good light, use materials with better light transmission, and try to increase the light transmission area. If necessary, artificial light supplementation measures can be used.
2) The position of flowers and plants should be placed according to the different requirements of light
③Reducing air humidity. Poor ventilation, high temperature and high humidity in greenhouses make the growth of flowers weak and easy to develop diseases. Controlling watering and improving ventilation conditions are effective measures to reduce air humidity. The specific measures are: one is to reduce the water supply of flowers to meet their physiological needs; the other is to improve ventilation conditions to reduce water evaporation from flowers and pot soil . In the case of maintaining the indoor temperature, increase the opening time of doors and windows to keep the indoor home air relatively dry. The air humidity should generally be maintained at about 60% to 80%.
The climate is cold in winter, which can easily cause freezing damage and even death to plants that are not cold-tolerant. Therefore, the temperature of the greenhouse should be appropriately increased. When the cold wave comes, close the doors and windows tightly, block the vents, reduce ventilation, and you can also cover the heat preservation curtain, etc., and use the warming and heating equipment to increase the indoor temperature. When adjusting the room temperature, the temperature rise index should be determined according to the temperature requirements of the flowers. Avoid too high room temperature to increase the respiration of flowers, weaken photosynthesis, weak branch growth or low room temperature, hinder the growth of cattle, and even cause freezing damage. Keep a suitable temperature so that sunflowers can survive the winter safely.
⑤Increase the carbon dioxide concentration. The airtight nature of the greenhouse leads to poor indoor air circulation. The carbon dioxide for photosynthesis of flowers is reduced, which seriously affects the production and supply of nutrients. Opening doors and windows in time to increase ventilation can increase the content of carbon dioxide in the air. In order to promote the healthy growth of flowers, dry ice or compressed carbon dioxide can also be used to supplement, and its concentration should be controlled at 3 to 5 times the carbon dioxide content in the air.
⑥ Preventing pests and diseases The greenhouse is easy to cause the occurrence and spread of pests due to its high temperature, high humidity and high flower density. Therefore, it is forbidden to bring flowers and plants with pests and diseases, and the greenhouse air, equipment, and soil shall be disinfected regularly. When plants with plant diseases and insect pests are found, isolate them in time, give them medication, or remove them and destroy them to prevent spreading.