2002•T'u Jang T'ung PaoRequires access

Influence of Long-Term Fertilization on Humus Composition of Soil

YU Shu-fang

Abstract

This paper studied fertilizing influence on humus composition in main three soils at Shandong province by sixteen years fixed position trial. The result showed that long-term fertilization promoted accumulation of humus composition; Nitrogen and potassium increased ratio of humus acid carbon and organic carbon,decreased the activity of humus acid in three soils. Compared with Chemical fertilizer, Chemical fertilizer plus organic- fertilizer largely raised humin and humus acid, lowered ratio of humin and humus acid in soil.

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Key concepts: Humus, Humin, Fertilizer, Humic acid, Chemistry, Human fertilization, Composition (language), Agronomy