The Influence of Vermicompost and Various Concentrations of Lead on the Enzymatic Activity of Sierozem Soils of Kazakhstan

Table 1

Scheme of experiments by variants.

Soils for research	Lead content in soil samples (mg/kg)
Without adding vermicompost	0 (control)
	16
	80
	160
With the introduction of vermicompost (8 t/ha)	0 (control)
	16
	80
	160