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首页> 外文期刊>Revista Brasileira de Fruticultura >Diagnosis of the nutrient compositional space of fruit crops
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Diagnosis of the nutrient compositional space of fruit crops

机译：水果作物营养成分空间的诊断

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Tissue analysis is a useful tool for the nutrient management of fruit orchards. The mineral composition of diagnostic tissues expressed as nutrient concentration on a dry weight basis has long been used to assess the status of 'pure' nutrients. When nutrients are mixed and interact in plant tissues, their proportions or concentrations change relatively to each other as a result of synergism, antagonism, or neutrality, hence producing resonance within the closed space of tissue composition. Ternary diagrams and nutrient ratios are early representations of interacting nutrients in the compositional space. Dual and multiple interactions were integrated by the Diagnosis and Recommendation Integrated System (DRIS) into nutrient indexes and by Compositional Nutrient Diagnosis into centered log ratios (CND-clr). DRIS has some computational flaws such as using a dry matter index that is not a part as well as nutrient products (e.g. NxCa) instead of ratios. DRIS and CND-clr integrate all possible nutrient interactions without defining an ad hoc interactive model. They diagnose D components while D-1 could be diagnosed in the D-compositional Hilbert space. The isometric log ratio (ilr) coordinates overcome these problems using orthonormal binary nutrient partitions instead of dual ratios. In this study, it is presented a nutrient interactive model as well as computation methods for DRIS and CND-clr and CND-ilr coordinates (CND-ilr) using leaf analytical data from an experimental apple orchard in Southwestern Quebec, Canada. It was computed the Aitchison and Mahalanobis distances across ilr coordinates as measures of nutrient imbalance. The effect of changing nutrient concentrations on ilr coordinates are simulated to identify the ones contributing the most to nutrient imbalance.
机译：组织分析是果园养分管理的有用工具。诊断组织的矿物质成分以干重为基础的养分浓度表示，长期以来一直用于评估“纯”养分的状况。当营养成分在植物组织中混合并相互作用时，它们的比例或浓度会由于协同作用，拮抗作用或中性作用而相对变化，从而在组织成分的封闭空间内产生共振。三元图和养分比是组成空间中相互作用养分的早期表示。诊断和推荐综合系统（DRIS）将双重和多重相互作用整合到营养指数中，成分营养诊断则整合到中心对数比（CND-clr）中。 DRIS有一些计算上的缺陷，例如使用不是组成部分的干物质指数以及营养成分（例如NxCa）而不是比率。 DRIS和CND-clr集成了所有可能的养分交互作用，而无需定义临时交互模型。他们诊断D分量，而D-1可以在D组合希尔伯特空间中诊断。等距对数比率（ilr）坐标使用正交二元营养物分配代替双重比率克服了这些问题。在这项研究中，利用加拿大魁北克西南苹果园的叶片分析数据，提出了一种营养交互模型以及DRIS和CND-clr和CND-ilr坐标（CND-ilr）的计算方法。计算出了跨过ilr坐标的Aitchison和Mahalanobis距离，作为营养失衡的量度。模拟了变化的养分浓度对ilr坐标的影响，以找出对养分失衡影响最大的因素。

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