Question

why wheat production is more in some states in India

Answer 1

Some states like punjab haryana up bihar are major wheat producers in India.
Because
this rabi crop requires cool temperature .
Bright sunshine while ripening
50 to 75 cm rainfall
And the suitable conditions of north india supports it.

Answer 2

wheat production is more in some states india but it's diverse geographic .wheat production need a cool or chilled temperature it is found in punjab harayana regions