The proportion of water in nutrient solution is the most, and natural rainwater is the best choice. This is the most important water source. It is not only very pure, but also contains a lot of trace elements, which can supplement the most needed nutrition for growth. If river water is used, the safety will not be guaranteed. It may contain chemicals, which may limit the growth of vegetables. You can also use the tap water after standing, standing for a period of time can remove the chlorine inside, the impact on vegetables is smaller
According to the elements needed for the growth of vegetables, sodium, calcium, potassium, nitrogen, phosphorus and magnesium can be mixed, such as 70g superphosphate, 10g sodium nitrate, 40g magnesium sulfate, 35g potassium sulfate, 25g ammonium sulfate, etc., which are mixed with clear water for mixing, the dosage is not accurate, and it can be increased or decreased according to different requirements of flowers.
When mixing, pay attention not to use metal containers, or it will affect the solution inside. You can use other materials, such as glass and ceramics, so as not to damage the elements inside.