I would suggest using page templates that call specific header templates.
See these codex links for more information:
http://codex.wordpress.org/Pages#Page_Templates
http://codex.wordpress.org/Function_Reference/get_header
well, some addons insert css/javascript into all pages… but i don’t need in my home… so how can i delete this code?
If you are referring to active widgets in your sidebar adding JavaScript and/or CSS to your header then you may need to look at specific sidebar templates in the same fashion as I recommended above.
Here is another codex page for your reading pleasure:
http://codex.wordpress.org/Function_Reference/get_sidebar
Although your original question implied a much more simpler issue.
in
<head>
a lots of plugins insert some CSS or Javascript that they don’t need… so i want to choose who can be in homepage and who cannot be there