New Zealand thrashed Root-led by an innings and 65 runs in the first Test match.
"I'm over it. I've left what happened at the ground and I've moved on", the Barbados-born bowler said in a column for the Daily Mail.
Stokes said England would not be distracted by the departure of coach Chris Silverwood, who will return home after day two of the second Test starting on Friday, due to a family bereavement. And sometimes that criticism is unfair, I would say. But I found the incident a real shame.
"I thought members of the crowd around the guy might have pulled him up because I could hear him from the pitch as I was walking off".More news: England's second Test chances rely on Joe Root flourishing
"I guess they didn't".
The New Zealand batsman - especially BJ Watling - played Jofra Archer well and I hope Root bowls his fast bowler in shorter, sharper spells. It was one of the main reasons behind England loss in the first Test against the Kiwis. It may be time for England to review their bowling strategies.
England pacer Jofra Archer (R) shares a light moment with captain Joe Root during a training session at Seddon Park in Hamilton on Wednesday.
The focus is now on trying to level the series in Hamilton and although England's players spoke of taking a new, more disciplined approach to batting ahead of the first Test, Stokes made it clear they were not trying to implement a one-size-fits-all approach. "The stats would say the captaincy has affected his batting".
He was England captain from 1999-2003 and said New Zealand's "template" in tests was a good one to follow.More news: LaLiga Report: Deportivo Alaves v Real Madrid 30 November 2019
"We've got to work with him to make sure his game is in the best shape and he's got time to work on it away from the pressures of captaincy".
Jofra Archer had a bad time in the first Test against New Zealand.
The absence of Boult and de Grandhomme, both with muscle problems, opens the way for Ferguson's Test debut and also prompted Daryl Mitchell's call up into the wider squad.
Silverwood had earlier said he, Thorpe and Collingwood had roles to play in helping Root rediscover his spark with the bat.
A win or draw will secure New Zealand's fifth consecutive Test series victory on home soil.More news: Save up to 50% on Bose headphones, speakers, and home audio