脐橙(Citrus sinensis Osbeck)由于无核、味甜、肉脆、富香气,经济价值高,饮誉中外,在柑桔鲜果贸易中极受欢迎。但是,这个品种的风土适应性较弱,对强烈的干热较为敏感,要求土层深厚、富有机质、保水、排水良好的肥沃沙壤土,故在不良气候环境和粗放管理条件下栽培,往往花量大,座果少,产量低。为了探讨左右脐橙产量和品质的因子, Citrus sinensis Osbeck is very popular in citrus fresh fruit trade due to its non-nuclear, sweet, crisp, rich aroma and high economic value. However, this species has weak terroir adaptability and is sensitive to intense dry heat. It requires deep, organic, water-retaining and well-drained sandy loam so it is often cultivated under unfavorable climatic conditions and extensive management Large, fewer fruit, low output. In order to explore the factors of navel orange yield and quality,