The analysis of acid-base soils introduces an important factor in non-growth. There are various chemical and biochemical reactions in the soil that exhibit different acidities or basicities. The strength of acid and alkali in soil is often measured by pH.
Analytical introduction of acid-base soils
First, look at the soil source generally collected from the mountains and gully humus, mostly dark brown, relatively loose, fertile, good permeability, is an ideal acid humus soil. Such as: pine needle humus soil, grass charcoal humus soil.
Second, look at the acidity of the humus soil is generally darker, mostly dark brown, and the alkaline soil color is mostly white and yellow. Some soil layers have a layer of white powdery alkaline material on the surface.
Third, look at the surface plants in the wild when mining the soil, you can observe the surface growth of plants, generally the growth of wild rhododendron, pine, cedar plants are mostly acidic soil; and the growth of the holy willow, millet, sorghum and other areas of the soil Alkaline soil.
Fourth, look at the texture of the acidic soil texture is slightly loose, breathable and easy to agglomerate without spreading.
Sixth, look at the situation after watering Acidic soil watering after infiltration faster, water-based; alkaline soil texture is hard, easy to form a block, poor ventilation and permeability.
5. With the feeling of alkaline soil, there is a kind of “soft†feeling in the hands. After loosening the hands, the soil is easy to spread and not easy to agglomerate; the alkaline soil has a “hard†feeling in the hands, and it does not whiten after the loose hands. Bubble, the water surface is relatively sturdy; after the alkaline soil is watered, the infiltration is slower, the water surface is white foaming, foaming, sometimes the flowerpot periphery
The analysis of acid-base soils also introduces a layer of white alkaline material.
7. The pH test paper is used to measure the acidity and alkalinity of the soil: a part of the soil sample is immersed in the cold water, a part of the test paper is immersed in the soaking liquid, and then taken out, the color change is observed, and then the test paper and the color chart are taken. In comparison, if the pH value is 7, the soil is neutral; if the pH is <7, it is acidic; if the pH is > 7, it is alkaline. The same plants need to get an optimal living environment to thrive, and acidic soils or alkaline soils will limit plants.
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