经两年试验表明红富士苹果“以果定果”疏果技术能提高果品质量，克服花期大风、晚霜、连阴雨等恶劣天气所造成的授粉率低的现象。5月中下旬果实基本定型时进行，选果形端正、授粉受精良好的幼果，可提高果形指数，减少偏斜果率，是目前生产高档果的有效措施。 After two years of experiments show that Red Fuji Apple “fruit fruiting ” thinning fruit technology can improve fruit quality, to overcome the flowering wind, night cream, rain and other adverse weather caused by the phenomenon of low pollination. In the middle and late May, the fruits are basically set at the time of final setting. The fruits with good shape and pollination and good fertilization can improve the fruit shape index and reduce the skewed fruit rate. It is an effective measure to produce high grade fruit at present.