EFFECT AND AFTEREFFECT OF URBAN SEWAGE SLUDGE AND ITS COMBINATIONS WITH ZEOLITE CONTAINING AGRONOMICAL ORE ON THE ACID-BASE PROPERTIES OF MEADOW-CHERNOZEM SOIL
2019
A.N. Arefiev | E.N. Kuzin | E.E. Kuzina
Herewith the effect and aftereffect of land reclamation norms of urban sewage sludge (USS) and their combinations with zeolite-containing agricultural ore on acid-base properties of meadow-chernozem soil are shown. It was found that urban sewage sludge in combination with zeolite increased the cation exchange capacity in the arable layer of meadow-chernozem soil by 4.97-5.84 mg-eq/100 g of soil, the amount of exchangeable bases by 6.65-7.83 mg-eq/100 g of soil, the pHsalt by 1.24-1.50 units. The value of hydrolytic acidity in these options decreased by 1.69-2.01 mg-eq/100 g of soil. With the unilateral effect and aftereffect of the reclamation norms of urban sewage sludge, the soil from the slightly acid one turned into a soil with a near-neutral medium reaction. And with the unilateral effect of a zeolite-containing agricultural ore and its combined effect with urban sewage sludge the soil turned into a soil with a neutral medium reaction.
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