To protect the catchment basin and relieve over-exploitation of the Lishan area, the government lifted tariffs on the large-scale importation of apples in 1979, causing prices to plummet.
為了保障水庫集水區安全，舒緩梨山土地過度開發與濫墾，民國六十八年，政府開放蘋果進口，致國產蘋果價格一落千丈。