摘要：
Soil acidity and alkalinity (pH) has a significant impact on plant growth and development. From the process, it is mainly reflected in the impact of climate and elements in soil on plant growth, while climate mainly affects carbon, hydrogen and oxygen, which account for 96% in the atmosphere. The more important elements in the soil are nitrogen, phosphorus and potassium, and the secondary elements are calcium, magnesium, sulfur and so on. This paper selects the conventional economic plant planting land as the development of the experiment, obtains the main components in the soil, and carries out the intervention experiment of different concentrations of soil pH value. The pH value in the soil is divided into four levels: pH 1 (<5.5), pH 2 (5.5 - 6.5), pH 3 (6.5 - 7.5), pH 4 (7.5 - 8.4) as the independent variable, and takes the elements in the soil as the dependent variable for linear regression analysis. The results show that pH 1 (<5.5), pH 2 (5.5 - 6.5), pH 3 (6.5 - 7.5), pH 4 (7.5 - 8.4) can explain the change of elements in soil. The results show that pH 1 (<5.5), pH 2 (5.5 - 6.5), pH 3 (6.5 - 7.5), pH 4 (7.5 - 8.4) can explain the change of elements in soil. Among them, pH 1 (<5.5) and pH 4 (7.5 - 8.4) are the most unstable, while pH 2 (5.5 - 6.5) and pH 3 (6.5 - 7.5) have little impact on plant growth and are relatively stable. Therefore, the acidity and alkalinity of soil has a certain impact on the elements in soil, but it is not a decisive impact. It can be proved that the influence relationship between independent variables and dependent variables.
