Production management is mainly to adjust the nutrient solution supply time and the number of times. The supply time and frequency of the nutrient solution are mainly determined by the cultivation form, vegetable growth state, and environmental conditions. In the cultivation process, the liquid should be supplied at the right time to ensure sufficient nutrient supply. Liquid supply time is generally selected during the day, no or less liquid supply at night. The number of times of liquid supply is more on sunny days, less liquid on cloudy and rainy days; more when the temperature is high and the light is strong, and vice versa. Under normal circumstances, supply the liquid 2-4 times a day, each time within 30 minutes. This can be adjusted in time with the time controller.

The nutrient solution should be replaced in due course after a period of use. Because the nutrient solution will gradually accumulate too much material that hinders the growth of plants during use, the nutrition is not balanced, and the germs multiply, which will hinder the growth of the root system and even lead to the death of the plant. Generally, for vegetables with a short growth cycle, the nutrient solution is replaced every crop. For fruits and vegetables, replace the nutrient solution every 1-2 months.

The preparation of nutrient solution is the core technology for the normal growth of hydroponic vegetables. It is also the foundation and key of soilless cultivation. According to the nutrient requirements of plant growth, a solution prepared by dissolving a certain amount of fertilizer in water in an appropriate proportion is called nutrient solution. The success of hydroponics depends largely on whether the nutrient solution formula, concentration, ratio of various nutrient elements, pH, and liquid temperature are appropriate, and whether the nutrient solution management during plant growth can meet the requirements of different growth stages. Claim. Only by adopting the correct formula, formulating and managing the nutrient solution according to the appropriate method, so that the plant is in the most suitable nutrient solution environment at any stage of growth and development, can the plant use more energy for growth, flowering, and fruiting. Obtain fast, high-yield and high-quality cultivation results.

Only by deeply understanding the composition principle of the nutrient solution, the changing law of the nutrient solution and the control method, can we truly grasp the essence of hydroponics. The configuration and management of the nutrient solution is by no means a simple matter of taking the existing formula mechanically and dissolving several fertilizers in the water like a prescription. Because different water quality, cultivation methods, climatic conditions, and cultivation period all have a great influence on the preparation and use effect of the nutrient solution. Only by correctly and flexibly preparing and using nutrient solutions, and earnestly practicing, can we achieve success in cultivation.