The nutrient solution used in hydroponic vegetables is to dissolve the fertilizer in water and absorb it through the roots of the vegetables to supply the water and nutrients necessary for the growth and development of the vegetables. The preparation and management of the nutrient solution is the key technology in hydroponic technology, which plays a decisive role in the growth of vegetables.
What is hydroponic cultivation nutrient solution
The main fertilizers used to prepare nutrient solution are calcium nitrate, potassium nitrate, nitric acid, magnesium sulfate, potassium silicate, potassium dihydrogen phosphate. Micro-fertilizers include chelated iron, sodium borate, manganese sulfate, copper sulfate, zinc sulfate, ammonium molybdate.
The specific dosage and the concentration ratio of the nutrient solution vary depending on the type and variety of the vegetables, the geographical conditions of the cultivation sites, and the seasons. In the process of cultivation and management, it is necessary to observe and adjust in time according to the actual growth of vegetables.
The nutrient solution not only supplies the water and nutrients necessary for the growth of the vegetables but also supplies the dissolved oxygen required for the roots of the vegetables to breathe. Therefore, it is necessary to install an aeration facility in the cultivation tank to increase the dissolved oxygen amount in the nutrient solution in time, which is extremely important for the cultivation of hydroponic vegetables.
Update and supplement of nutrient solution
The update and supplement of nutrient solution is the main work of nutrient solution management in the process of hydroponic vegetable cultivation. In general, fruit and vegetable vegetables need to be renewed two to three times during the entire growth period from planting to harvesting; and leafy vegetables from the time of planting to harvesting, if there is no large area of physiology Diseases, nutrient solution does not need to be updated, just need to supplement the amount of nutrient solution consumed once or twice a week.