作者： ARKADIUSZ STĘPIEŃ , ZMIANY CHEMICZNYCH WŁAŚCIWOŚCI GLEBY POD WPŁYWEM , RÓŻNYCH SPOSOBÓW NAWOŻENIA W ZMIANOWANIU
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摘要: A five-year field experiment was conducted on a pseudogley soil, class Illa, complex four, to study the effect of different fertilizer treatments on changes of some soil chemical properties. The following treatments were applied: A-only mineral fertilizers; B-farmyard manure, C straw and green manure (white mustard) plus mineral fertilizers; D-compost plus biodynamic preparations.After five years the content of humus, pH and macroelements increased in the soil. Most favourable pH and the highest content of nitrogen, phosphorus, magnesium, and calcium was found in the soil fertilized with organic agriculture methods. Content of humus and potassium was lower in ecological plot then in plots treated with straw combined with green manure and mineral fertilizers (obj. C). The lowest value was indicated in the soil treated with mineral fertilizers only (obj. A).