摘要
生物统计表明：采样地点及年份间的差异对巴林脐橙叶片元素含量有明显的影响；叶片微量元素含量的变异系数均显著高于大量元素。初步提出丰产巴林脐橙叶片元素含量的适宜指标：N2．8～3．3，P0．14～0．18，K1．4～2.1，Ca2.0～4.0，Mg0.25～0.45（以上单位×10-2），Cu5～18，Zn20～50，Mn20～100，Fe50～160，B25～100（以上单位×10－6）上列指标可供营养诊断之参考。
The optimum range of macro-and micro-element contents in the leaves of Parent Navel Orange in south Fujian were studied in 1994-1995. The amount of elements in the leaves within the same cultivar was definitely affected by different localities and years for sampling. The variation coefficients of micro-element contents in the leaves were higher than those of macro-element contents. The present study recommends that the values of the optimum ranges of the mineral elements in the leaves of spring shoots of Parent Navel Orange are: N 2. 8×10(-2)~3.3×10(-2), P 0.14×10(-2)~0.18×10(-2), K 1. 4×10(-2)~2.1×10(-2), Ca 2. 0×10(-2)~4. 0×10(-2), Mg 0.25×10(-2)~0.45×10(-2), Cu 5 ×10(-6)~18×10(-6), Zn 20× 10(-6)~50×10(-6), Mn 20×10(-6)~100×10(-6), Fe 50×10(-6)~160×10(-6), B 25×10(-6)~100×10(-6). These diagnostic criteria may provide the parameters of fertilizer guide.
关键词
巴林脐橙
营养诊断
叶片元素含量
Parent Navel Orange
Coefficient of variation
Nutrient diagnosis
Optimum range
Leaf element contents
