While much of that support is likely to be on the fiscal side, the Reserve Bank will maintain the current policies to keep borrowing costs low and credit available, and stands ready to do more as the circumstances warrant.
This, in turn, exerts an influence on expectations and yield differentials, and thereby on the level of long-term interest rates. The mechanism is well known in monetary theory. To the extent that monetary control is effective, it is able to influence inflation expectations and thereby interest rate differentials and hence the nominal yields on long-term securities.