To know the acidity and alkalinity of soil, first of all, we need to know the source of soil. Generally, some specific soil itself has its own properties. We need to know whether these soil are some specific soil, and then to judge what properties the soil is.
In fact, some plants have their own growth characteristics, some like acid soil, some like alkaline soil. Like a place with large azaleas, it is generally acid soil, where grasshopper and other plants grow. There are legumes, cereal plants, the soil is generally alkaline, the growth of small white soil is generally acid.
You can observe the color of some soil. Generally, the slightly acidic soil will show black, brown or brown black, while the alkaline soil will show white or yellow white.
Another is, to water the soil, look at the situation of water
Generally, the watering water seeps out and has a muddy color, which is generally acid soil. When watering, there are white bubbles and foam, which are generally alkaline soil. After watering, the soil is a little soft, generally acid soil, but after watering, the soil is hard, the surface layer has white powder, generally alkaline soil
