The New Zealand under-20s rugby team have crushed Wales 92-0, scoring 14 tries in their second match at the world junior championship in Italy.

The three-time champions opened the scoring after just 56 seconds at the Stadio Mario Battaglini through Chiefs flanker Sam Cane and added six more tries before the break to lead 45-0 at the interval on Wednesday morning (AEST).

Seven more tries came after the resumption with winger Charles Piutau and inside centre Lima Sopoaga both scoring twice.

Five-eighth Gareth Anscombe kicked 11 of his 14 conversion attempts.

New Zealand's final pool match is against Argentina on Sunday (AEST).

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