Summary of family hydroponic flower culture technology

First, where are the difficulties of hydroponic flowers in summer?

Hydroponic flowers are used in the cultivation of ornamental plants in a non-solid medium (water or water with an appropriate amount of plant nutrient solution). At present, most of the hydroponic flowers in the family are cultivated in still water, and the dissolved oxygen is lower than 1mg/l, and the flowers barely maintain life in anoxic utensils. With the increase of temperature in summer, plant physiological metabolism is exuberant, microorganisms multiply in large numbers, oxygen consumption increases sharply, dissolved oxygen decreases continuously, and water quality deteriorates, which forms many unfavorable factors to the growth of hydroponic flowers, which may cause root rot, branches and leaves to wilt, and even make plants and flowers die. Therefore, in summer, in addition to preventing heat and high temperature, increasing the oxygen content of nutrient solution is the key to ensure the safety of hydroponic flowers in summer.

Second, how to improve the content of dissolved oxygen in nutrient solution?

There are many ways to increase dissolved oxygen, which can be summarized as chemical method and physical method. The following are several methods that are easy to operate and effective.

1. Increasing the number of times to change the nutrient solution is the easiest way to increase dissolved oxygen. According to the measurement, the dissolved oxygen content of the fresh nutrient solution is 70% more than that of the original solution, which can improve the physiological hypoxia of flowers in time. Flowers that have grown aquatic roots should change their nutrient solution no more than 7 days at most in 3-5 days. When changing the nutrient solution, pay attention to the temperature difference between the new solution and the original solution should not be too large, too large temperature difference may cause flower root physiological disorder. When changing the liquid, we should patiently rinse the roots with clean water, remove withered and rotten roots, and truncate the aged roots to promote the growth of new roots. If the nutrient solution suddenly becomes turbid, or there are mosquito eggs, you should immediately replace the new nutrient solution.

2. Hydroponic flowers with small vibrating aeration utensils can be oxygenated by vibration method as long as the root system is clear and the nutrient solution is thorough. The operation method is to fix the flowers with one hand and gently shake the utensils with the other hand. After shaking, the dissolved oxygen content of the nutrient solution can be increased by more than 30%. Hydroponic flowers with turbid nutrient solution and stunted root system should not adopt the method of vibrating oxygen enrichment, and the nutrient solution must be changed thoroughly.

3. Inflate the utensils. If there is a tank of ornamental fish beside the maintenance of hydroponic flowers, you can use the oxygen rods of the fish tank to inflate the utensils.

Third, where should hydroponic flowers be placed in summer?

Most of the flowers selected in hydroponic culture are shade-resistant foliage flowers and flowers and leaves and ornamental flowers. Such as taro, white jade evergreen, silver taro, candle, pineapple and so on. These flowers like to be warm and humid, slightly resistant to shade, and avoid high temperature and dry heat. "hydroponic culture" only changes the cultivation form, but it is impossible to change its growth habits and the required environmental factors. It is best to put hydroponic flowers in bright light, slightly higher humidity, cooler and well-ventilated environment in summer. Avoid direct sunlight, but can not be too shaded, so as not to hinder the photosynthesis of flowers, weak growth, elongated stem nodes, thinning leaves. Resulting in colored blocks, colored flower leaves lose their luster.

Can hydroponic flowers be placed in an air-conditioned room?

Sure. However, hydroponic flowers should not be placed in the air outlet of the air conditioner, the wind speed is too fast will hurt the branches and leaves, light leaves curl, heavy scorched edge withered. It is also considered that the temperature requirement of flowers during the day is higher than that at night. If the air conditioner is turned off at night, the ambient temperature is higher than the daytime temperature when the air conditioner is turned on, which is disadvantageous to the growth of hydroponic flowers. When turning on the air conditioner, put a basin of water next to the flowers or spray to the leaves to increase the environmental humidity. The flowers are placed far away from the air outlet of the air conditioner, and there is no problem that the temperature difference between day and night is small.