Abstract: The soil nutrient status (0~40cm) of Newhall orange orchards were determined in 2002 and their fruit qualities harvested in 2003 from Qualified Citrus Varieties Demonstration Farm in Zigui County (ZG-HB), Baopingcun Village of Gaoyang Town in Xingshan County(XS-HB), Leijiapingcun Village of Dongrangkou Town in Badong County (BD-HB) of Hubei Province were evaluated,respectively. The multiple linear stepwise regression analysis revealed that among a certain range, the TA content was negatively correlated with the content of soil organic matter, the ratio of TSS to TA was positively correlated with the content of available K, and the VitC was positively correlated with the content of available P.

Key words: Newhall orange, soil nutrient status, fruit quality, multiple linear stepwise regression

摘要： 本试验测定湖北省秭归县柑橘良种示范场、兴山县高阳镇宝坪村和巴东县东瀼口镇雷家坪村的纽荷尔脐橙园0~40cm土层的营养状况,分析了相应果园纽荷尔脐橙果实的主要品质,经多元线性逐步回归分析结果表明,在一定范围内,纽荷尔脐橙果实的可滴定酸含量与土壤有机质含量呈线性负相关,固酸比与土壤速效钾含量呈线性正相关,VitC含量与土壤有效磷含量呈线性正相关。

关键词: 纽荷尔脐橙, 土壤营养状况, 果实品质, 多元线性逐步回归