Hot country trio Lady Antebellum leads the field for the 2010 Academy of Country Music Awards with seven nominations, trailed by Miranda Lambert and Carrie Underwood with six and Grammy princess Taylor Swift with five.

L.A.-based country org will hand out kudos at its April 18 ceremony at the MGM Grand Garden Arena in Las Vegas. Show will be telecast live in the East on CBS and tape-delayed in the West.

Up for entertainer of the year, ACM’s top prize, are Swift, Underwood, Kenny Chesney, Toby Keith, Brad Paisley, George Strait, Keith Urban and the Zac Brown Band.

Lady Antebellum is competing for top vocal group of the year and album of the year (for its self-titled Capitol Nashville album, which has sold 1.5 million to date); its recent single “Need You Now” — title track from the No. 1 sophomore album, already a million-seller — is up for single record of the year, song of the year and video of the year.

Firecracker singer-songwriter Lambert and “American Idol” grad Underwood go head to head in three categories: female vocalist, album of the year (for “Revolution” and “Play On,” respectively) and song of the year (for “White Liar” and “Cowboy Casanova,” respectively).

Swift continues to ride high with her late 2008 album “Fearless,” now at 5.6 million copies sold; the late-2008 release was named album of the year at the ACMs last year.

Her five noms include her first for entertainer of the year and top female vocalist. She also is nominated as artist and composer for song of the year for “You Belong With Me,” for which she is also nominated for video of the year.

It remains to be seen if the flap about Swift’s off-key Grammys duet with Stevie Nicks will sway ACM voters, who usually favor the top commercial entry.

Nominated in four categories apiece are longtime ACM faves Chesney and Paisley and newcomer the Zac Brown Band, who collected the new artist Grammy last month.