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首页> 外文OA文献 >Efficiency of the CL, DRIS and CND Methods in Assessing the Nutritional Status of Eucalyptus spp. Rooted Cuttings
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Efficiency of the CL, DRIS and CND Methods in Assessing the Nutritional Status of Eucalyptus spp. Rooted Cuttings

机译：CL，DRIS和CND方法的效率评估桉树SPP的营养状况。生根的扦插

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The efficiency of methods in adequately interpreting the nutritional status of Eucalyptus spp. rooted cuttings remains unknown. The aim was to evaluate the quality of diagnoses obtained using the critical level (CL), diagnosis and recommendation integrated system (DRIS) and compositional nutrient diagnosis (CND) methods to assess the nutritional status of Eucalyptus spp. rooted cuttings, based on two different yield indicators. The data were obtained from commercial nursery and calibration experiments, using seven nutrients as treatments (N, P, K, Mg, Ca, B and Fe) and four concentrations per nutrient, arranged in randomized blocks, with four repetitions. The Eucalyptus spp. clone used in the experiments was AEC 0144. A total of 222 rooted cuttings were obtained from the experimental area and commercial nurseries and the following were determined: leaf nutrient content, whole plant dry matter (DM) content and the Dickson quality index (DQI). Diagnostic accuracy in the experimental plots was ascertained by comparing the diagnosis with plant response as a function of adding the corresponding nutrient. Five measures of accuracy were used to test the efficiency of the diagnostic methods: total accuracy, accuracy for deficiency and sufficiency, deficiency ratio, efficiency ratio, and the net increase in in DM and DQI. The performance of diagnostic methods varied between CL, DRIS and CND, and among the nutrients studied. Given that the seedling production system is largely more controlled, where environmental variations are minimal, and considering that the different diagnostic methods exhibited distinct performance in terms of assessing the true nutritional status of eucalyptus rooted cuttings, the CL method is the most indicated for this situation, due to its better performance in evaluating the nutritional status of most nutrients and easy implementation.
机译：桉树SPP营养状况充分解释的方法效率。根切割仍然未知。目的是评估使用临界水平（CL），诊断和推荐系统（DRIS）和组成营养诊断（CND）方法获得的诊断质量，以评估桉树SPP的营养状况。基于两种不同的产量指标的根切屑。这些数据是从商业苗圃和校准实验获得的，使用7种营养素作为处理（N，P，K，Mg，Ca，B和Fe）和每种营养素的四种浓度，排列在随机块中，具有四个重复。桉树SPP。实验中使用的克隆是AEC 0144.从实验区和商业苗圃中获得总共222根切屑，确定：叶营养含量，整个植物干物质（DM）含量和Dickson质量指数（DQI） 。通过将植物响应的诊断与添加相应的营养素的功能进行比较来确定实验图中的诊断精度。五项准确度用于测试诊断方法的效率：总准确性，缺陷和充足，缺陷比，效率比和DM和DQI的净增加。诊断方法的性能在Cl，Dri​​s和CND之间变化，以及研究的营养素之间。鉴于幼苗生产系统主要受到控制，其中环境变化很小，并且考虑到不同诊断方法在评估桉树根切割的真正营养状况方面表现出明显的性能，因此CL方法是这种情况最多的表明，由于其在评估大多数营养素的营养状况和简单的实施方面具有更好的性能。

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