A portion of Yankee Stadium’s replacement park will open next month, but the rest of the parkland is on hold. The new Macombs Dam Park soccer field, which is being built on top of a stadium parking garage, is set to open in April, according to the city Parks Department. Construction on the remainder of the seven-acre field will be put off for another year. Work on Heritage Field, a three-ballfield park to be built on the site of the old stadium, can’t begin until the stadium comes down, and the city has yet to issue permits for the demolition. Jose Rodriguez, district manager for Community Board 4, said the wait for the parkland has been long, and residents are frustrated at the lack of recreational space. When it’s complete, the park will also have four handball courts, four basketball courts, grandstand seating, a comfort station and a picnic table terrace.