WASHINGTON — The Trump administration has dropped its plan to impose new tariffs on $160 billion of Chinese imports beginning Sunday under a modest interim deal that de-escalates a 17-month trade war between the world’s two biggest economies.

As part of the agreement announced Friday, the administration is also reducing its existing import taxes on about $112 billion in Chinese goods from 15 percent to 7.5 percent.

In return, U.S. Trade Representative Robert Lighthizer told reporters, China agreed to buy $32 billion in U.S. farm products over two years. Beijing has also committed to ending a long-standing practice of pressuring companies to hand over their technology as a condition of gaining access to the Chinese market.

Lighthizer said China had also agreed to lift nontariff barriers to the Chinese market for such products as beef, poultry, seafood, pet food and animal feed.

In all, the U.S. expects a $200 billion boost in exports over two years as a result of the deal.

“We expect the trade deficit to go down for sure,” Lighthizer said.