Changing the pools of organic matter in agrozems of Primorye at phytomelioration

In the study the results of researches of change of organic carbon pools (active, slow and passive) in agrodark bleached soils with crops of different phytomeliorants (timothy, rump, clover, alfalfa) and their mixtures (timothy+clover, rump+ alfal-fa) are given. The tendency to the accumulation of Corg and stocks Corg in the horizon PU on experimental options with crops of phytomeliorants was found out. The greatest accu- mulation of Corg was recorded in the crops of alfalfa and grass mixtures: rump+alfalfa, timothy+clover. The share of labile organic matter extracted with neutral pyrophosphate extract of the horizon was from 31.9 to 36.6 % from Corg. Higher rates of C lab were typical for the variants with the seeding of clover and alfalfa. The close link between the General content of the Corg and Clab was determined. The correlation coefficient wasIt was established that the pool of transformed organic matter (Ctrans) increased on all variants of the experiment with the crops of phytomeliorants compared to the control...