  We study the spectrum of the one-dimensional Schr\"{o}dinger operator $H_0$
with a matrix singular distributional potential $q=Q'$ where $Q\in
L^{2}_{\mathrm{loc}}(\mathbb{R},\mathbb{C}^{m})$. We obtain generalizations of
Ismagilov's localization principles, which give necessary and sufficient
conditions for the spectrum of $H_0$ to be bounded below and discrete.
