sitemap - Robotstxt Google Searchresults -

my search results index sites on google. want index main page , not /nl/, /en/ , /fr/ how can prevent in robots.txt?

i used

disallow: /nl/ disallow: /fr/ disallow: /en/ 

but sitemap url www.eikhoeve.be/nl/sitemap.xml how can allow 1 google webmaster tools?

my website

you can use allow keyword give access url in disallowed directory.

allow: /nl/sitemap.xml disallow: /nl/