PH regulating material of soil and pH adjustment method of soil using the same

摘要

To provide a pH modifying method that can suppress a decrease in soil pH and maintain a suitable pH range for crop growth.SOLUTION: A soil pH modifying method includes treating the soil with the following component (a): a mixture of the pyroligneous acid obtained by dry distillation of bark and the bark charcoal powder obtained by carbonization of bark.SELECTED DRAWING: Figure 5