2005年7月~9月的研究在广州进行,每隔7天分期摘除4年生‘早钟六号’和‘解放钟’枇杷顶生(基)枝的第二次夏梢的叶片; Secendary-summer unmatured apical leaves of four years old ‘Zaozhong No.6’ loquat (Eriobotrya japonica Lindl.) and four years ‘Jiefangzhong’ were removed in every 7 days in the summer of 2005;