脐橙是柑桔果品中的一颗灿烂明珠,营养丰富,色艳味美,深受消费者欢迎,是国内外市场畅销鲜果。近十几年来发展较快,2009年广西种植面积达21 000 hm2、产量达25万t,其中,桂林市种植面积8 430 hm2,占广西脐橙总面积的40.1%,产量达12万t,占广西脐橙总产48%。但脐橙生产上存在落花落果严重、裂果、 Navel orange is a bright pearl in citrus fruit, nutritious, colorful and delicious, welcomed by consumers, is the best-selling fruit market at home and abroad. The development in recent ten years has been rapid. In 2009, the planting area in Guangxi reached 21 000 hm2 and the output reached 250,000 t. Among them, the planting area in Guilin was 8430 hm2, accounting for 40.1% of the total area of ​​Guangxi navel orange and the output was 120,000 t Guangxi navel orange total output 48%. However, the production of navel orange there is a serious drop fruit, cracked fruit,