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首页> 外文期刊>Communications in Soil Science and Plant Analysis >Establishment of nutrients optimal range for nutritional diagnosis of mandarins based on DRIS and CND methods
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Establishment of nutrients optimal range for nutritional diagnosis of mandarins based on DRIS and CND methods

机译：基于DRIS和CND方法的营养诊断营养诊断的建立

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摘要

The aim of this work was to establish for the first time nutrient optimal range (NOR) for mandarins in Tunisia using two methods: Diagnosis and Recommendation Integrated System (DRIS) and Compositional Nutrient Diagnosis (CND). The study was performed using data from 120 mandarin's commercial orchards, in several locations in Tunisia. Yield data and leaf nutrient content from 2011 to 2014 cropping season were compiled in a database. Leaf samples consist of spring flush leaves (7-8 months old) collected from nonfruiting terminals. The two methods were effective to diagnose the plant nutritional status based on the effectiveness of the chi-square-tested method. The two methods showed the nutrient imbalances of the studied commercial orchards. Phosphorus (P) and iron (Fe) showed higher frequencies as the most required nutrients by the plant. The found norms were then compared to the norms used in other countries. The new norms for mandarins are different because some norms in the literature do not take into account the different species of citrus, and they were adopted in different pedoclimatic conditions. So, adopting the new leaf nutrient norms is key for ensuring productivity in mandarin citrus orchards in Tunisia.
机译：这项工作的目的是使用两种方法建立突尼斯的第一次营养最佳范围（也不是）：诊断和推荐综合系统（DRIS）和组成营养诊断（CND）。该研究是使用来自120个普通话的商用果园的数据进行，在突尼斯的几个地点。从2011年到2014年裁剪季节的产量数据和叶营养成分在数据库中编译。叶样品由弹簧冲洗叶（7-8个月大）由非统计码头收集。这两种方法是有效地诊断植物营养状况，基于Chi-Square测试方法的有效性。这两种方法显示了研究的商用果园的营养失衡。磷（P）和铁（Fe）显示出植物最需要的营养素的频率较高。然后将发现的规范与其他国家中使用的规范进行比较。普通林的新规范是不同的，因为文献中的一些规范不考虑不同种类的柑橘，并且它们在不同的小型条件下采用。因此，采用新的叶片营养规范是确保突尼斯柑橘果园的生产率的关键。

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