ENVOY ADVISES NAKASONE TO PREPARE FOR U.S. VISIT The Japanese ambassador to the U.S. Suggested that Prime Minister Yasuhiro Nakasone make efforts to present "advanced' proposals on trade issues when he visits Washington next month. Ambassador Nobuo Matsunaga made the recommendation at a meeting with Nakasone, Kyodo News Service said. Matsunaga also advised that the prime minister should be prepared to discuss U.S.-Japan economic issues. Matsunaga cited issues such as a U.S.-Japan micro chip trade pact, foreign access to the Kansai international airport project, and a new international telecommunications firm. Matsunaga returned on Sunday to report to Japanese leaders on recent U.S. Developments over trade, in preparation for Nakasone's visit to Washington, April 29 to May 5. Kyodo quoted Nakasone as telling reporters after meeting the envoy, "I entirely accept what ambassador Matsunaga recommended." Nakasone did not elaborate. The U.S.-Japan trade dispute intensified last week when President Ronald Reagan said the U.S. Would impose heavy tariffs on Japanese imports in retaliation against alleged Japanese breach of the computer chip trade pact. Meanwhile, Nakasone's ruling Liberal Democratic Party (LDP) is to consider measures to boost imports and open up the Japanese market, such as government purchase of supercomputers and expanding foreign access to the Kansai airport project, party sources said. The LDP international economic affairs council was responding to Nakasone's request for measures to reduce Japan's increasing trade surpluses with the U.S. And Europe, they said.