  An information reconciliation method for continuous-variable quantum key
distribution with Gaussian modulation that is based on non-binary low-density
parity-check (LDPC) codes is presented. Sets of regular and irregular LDPC
codes with different code rates over the Galois fields $GF(8)$, $GF(16)$,
$GF(32)$, and $GF(64)$ have been constructed. We have performed simulations to
analyze the efficiency and the frame error rate using the sum-product
algorithm. The proposed method achieves an efficiency between $0.94$ and $0.98$
if the signal-to-noise ratio is between $4$ dB and $24$ dB.
