红星、元帅、红玉、祝光等品种的采前落果,严重地防碍了苹果的适期采收,特别是红星、元帅两品种尤为突出。早采的果子着色差、不耐贮藏,因而它成为影响果品品质的重要问题之一。 用a-萘乙酸防止采前落果,国外曾有报导。本所试验场果园在生产上也有所应用。近年来,从生产应用、 Red Star, Marshal, ruby, Zhuangguang and other varieties of pre-harvest fruit, seriously hinder the apple harvest, especially the Red Star, Marshal two varieties are particularly prominent. Early adoptive fruit coloring is poor, impatient storage, so it becomes one of the important issues affecting fruit quality. With a-naphthalene acetic acid to prevent the premature harvest fruit, foreign reports. The test site orchard in the production has also been applied. In recent years, from the production and application,