Ideally you should use two different ones, yes. As 'ronsimpson' was saying, solar charge controllers (specially MPPT type solar charge controllers) are specially designed to have the solar panel(s) operate at the optimal voltage and current while the battery bank is operating at another. The most common charge controller that come with wind turbines are basic load diversion . Essentially all they do is as soon as the battery bank is up to voltage, the power from the wind turbine gets diverted to a large resistor that just burns off the energy. More recently, similar MPPT controller technology has been developed for wind turbines too. For instance, I know that a US manufacturer, Midnite Solar, recently came out with a solar charge controller that can be used for wind (or hydro) turbines and takes advantage of the MPPT technique. Here's a site that shows a few versions of their model:
It is better two have controller that's optimized to the type of "generator" (i.e. wind verus solar) since they do have different ways of optimizing their charging.