柠檬(Citrus limon Burm.f.)一年多次开花,一般可三季结果(即春、夏、秋花果)。据此特性,世界柠檬主产国一般实行分期适时采收,达到鲜果周年供应。我国柠檬以四川栽培量较大,主栽品种为尤力克和里斯本。过去对柠檬的采收适期研究不 Lemon (Citrus limon Burm.f.) flowering many times a year, the general three-season results (spring, summer, autumn flowers). According to this characteristic, the main producing countries in the world adopt the staging system to timely harvest the fruits and reach the annual supply of fresh fruits. Lemons in Sichuan to cultivate a large amount of cultivars, especially Lectra and Lisbon. In the past, the proper study of lemon harvesting did not