ABSTRACT
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.