Effects of manure and nitrogen fertilization on cellulolytic activity of soil under two crop rotation systems

摘要

Forty soil samples were collected from experimental plots. The plots were a part of a long-term static experiment of two crop rotation systems and differentiated fertilization with nitrogen and manure. Manure was used at doses ranging 20 - 80 t per ha, while fertilization with nitrogen was applied at four levels: NO (no nitrogen), N_1, N_2 and N_3. Fertilization systems as well as both crop rotations had significant effects on soil cellulolytic activity but only in some cases stimulation effects were noted.