脐橙是世界橙类畅销良种,我国自1920年从国外引人。由于部分地区栽培环境及技术条件不适,长期被认为是低产树种,有的甚致高接换种,严重阻碍生产的发展。位于川西的眉山县,近年脐橙生产蓬勃发展,产量日增,全县已定植脐橙15万株,1982年产脐橙10多万斤,他们的主要经验是:(一)良种区域化脐橙花丝纤弱,花粉退化, Orange is the world’s best-selling orange varieties, since our introduction from abroad in 1920. Due to the unfavorable planting environment and technical conditions in some areas, it has long been considered as low-yielding tree species, and some have even been replaced by high-grade ones, which seriously hindered the development of production. Located in Meishan County in western Sichuan, navel orange production in recent years, vigorous development, production increased day by day, the county has 150,000 navel oranges planted in 1982, more than 10 kilos of navel orange, their main experience is: (a) Pollen degradation,