But lettuces have quite shallow roots and wish a lot of nitrogen to produce our favorite leafy greens. ??????????????? ??????????? ? ????????????? ?????? ??? ????? ??????, ?? ???????????!?? ???? ?? ???? ?????? ? ??? ???? ???? ??? ?? ?? ??? ?????? ?????? ???? ??????.?? ??? ????? ???? ?? ????? ?????? ???? ??????? ??? ???????? ?? ????? ??????? ???.??