【摘要】 １９９０～１９９２年对贵州柑桔主产区的农场果园进行４０个园次叶片及土壤养分含量分析，初步提出贵州甜橙叶片主要元素含量的适宜范围：氮２．３％～３．０％，磷０．１２～０．１７％，钾１．１％～２．０％，钙２．６％～０．３６％；并探明了叶片各元素含量的变异系数以及氮与叶片主要元素含量之间的平均比值（氮：磷：钾：钙：镁为１：０．０６：０．５４：１．１８：０．１１），以上指标可作为贵州甜橙叶片营养诊断标准之参考。柑桔树体内１１种营养元素中，以磷素对其它元素的影响最为广泛和重要，其次是钾素．钙、硼、钼３元素在土壤有效含量与柑桔叶片含量间存在密切相关性，其中钼呈极显著负相关，显示这些元素在土壤和柑桔营养之间的重要性。更多还原

【Abstract】 Nutrient status of soil and citrus leaves in 40 orchards in Guizhou was assayed in 1990-1992. It was suggested that the optimum contents of mineral elements for sweet orange leaves was N 2.3～3.0%, P2O512-0.17%,K1.1～2.0%,Ca 2.6～3.6%,M-0.22～0.36N.The coefficients of variation of 11 elements for sweet orange leaves and the proportion of N to other mineral elements(i.e.,N:P:K:Ca:Mg=1:0.06; 0.54:1.18:0.11) were worked out.These statistical analysis values could be a reference for nutritional diagnostic criterion of sweet orange leaves.The influence of P on other elements was the strongest and K ranked the second for citrus plants.There were close correlations between the content of available Ca, B, Mo in soil and that in citrus leaves.Mo in soil had significantly negative correlation with Mo in leaves.更多还原