1、 Water

The proportion of water in nutrient solution is the largest. It is best to choose natural rainwater, which is the most important water source. It is not only pure, but also contains a large number of trace elements, which can supplement the nutrition most needed for growth. If river water is used, the safety is not guaranteed. It may contain drugs, which restrict the growth of vegetables. You can also use tap water after standing. Standing for a period of time can remove the chlorine in it and reduce the impact on vegetables

2、 Nutrient ratio

According to the elements needed for vegetable growth, sodium, calcium, potassium, nitrogen, phosphorus and magnesium can be mixed, such as 70g of calcium superphosphate, 10g of sodium nitrate, 40g of magnesium sulfate, 35g of potassium sulfate and 25g of ammonium sulfate. It can be mixed with clean water and stirred. If the dosage is not accurate, it can be increased or decreased according to the different requirements of flowers

3、 Precautions

When mixing, pay attention not to use metal containers, otherwise it will affect the solution inside. You can use other materials, such as glass and ceramics, so as not to damage the elements inside