(NfIZI^ESKIE USLOWIQ PO^WENNOGO PLODORODIQ (B/s - (NbONDAREW(B, (Na(B.(Ng(B.s; (NwSESO@ZNAQ AKADEMIQ SELXSKOHOZQJSTWENNYH NAUK IM(B. (Nw(B.(Ni(B. (NlENINAs; (NpO^WENNYJ INSTITUT IM(B. (Nw(B.(Nw(B. (NdOKU^AEWAs ((Nm(B. :s (Nb(B. (NI(B.,s, 1978)
Keywords: (NpLODORODIE I TOKSI^NOSTX PO^Ws