THE INFLUENCE OF SHORT-LIVED LEGUME SWARDS AND STRAW ON SOIL HUMICn SUBSTANCES IN A CLAY LOAM CAMBISOL

摘要

The experiments were designed to estimate the effects of short-lived legume swards. Therefore, the mass of Trifolium L., a mixture of Trifolium repens L. and Lolium Lamk. and straw of Triticum aestivum L. were incorporated into the soil, and the effects of changes of soil humic substances and their quality in 0-25 cm soil layer were monitored in a clay loam Cambisol, in two years. In the first year, it was found that incorporation of T. repens and L. multiflorum mass increased the content of mob