3月 13, 2018

澳大利亚语言学论文代写:叶子营养检测实验

澳大利亚语言学论文代写:叶子营养检测实验

在实验室中通过各种过程测试了3个健康和3个不健康的叶样品,以确定叶中的营养水平。在健康1中,N%为2.23,高于2.2的标准缺陷范围。同样,P%为0.39,高于0.09的标准。 Healthy1中的所有营养素浓度均高于不足水平,因此,柑橘叶子是健康的。这些叶子几乎是5-7个月大的柑橘树。同样,对于不健康的1,N,P,K,S等,浓度低于标准临界水平,因此由于缺乏所需的最低营养素,叶片不健康(Ishizuka,1978)。缺乏叶中的N是树生长不良的指标。这些树不能产生足够的叶绿素以提供生长所需的最小营养。这将导致低增长。缺乏生产,叶子会保持小而过早下降。

澳大利亚语言学论文代写:叶子营养检测实验
对于两种类型的全部6片叶子的实验具有相似的趋势,并且能够容易地识别柑橘树叶中的营养缺乏和潜在疾病。为了避免这些问题,需要注意纠正措施,以免柑橘树中的营养素缺乏,并且在发生柑橘树之前可以对其进行处理。为此,肥料如硝酸钙铵,磷酸铵和尿素可以从一开始就供应,因此这些树木具有保持健康和生长所需的最低营养。在这些树上叶面喷施尿素可以快速提供所需的营养物质(Stephen et al。,2000)。识别树叶中这种营养素缺乏的基本症状是使叶片中的褪绿症状可视化,这有助于识别各种类型的营养缺乏症,而乍一看没有太多实验或信息。

澳大利亚语言学论文代写:叶子营养检测实验

There are 3 healthy and 3 un-healthy samples of the leaf tested in the laboratory through various processes to identify the nutrient level in the leaves. In Healthy 1, N% is 2.23 which are higher than standard deficient range of 2.2. In same way, P% is 0.39 which is higher than standard of 0.09. All the nutrient concentrations in Healthy1 are above the deficient level and hence, Citrus leaf is healthy. These leaves are almost 5-7 months old for the Citrus tree. Similarly, for Unhealthy 1, N, P, K, S etc., concentration is less than the standard critical level and hence the leaf is un-healthy because of lack of minimum nutrients needed (Ishizuka, 1978). Lack of N in leaf is an indicator of the poor growth of the tree. These trees are not able to produce sufficient chlorophyll to provide minimum nutrients that are needed for the growth. This will lead to low growth. Lack in production, leaf will remain small and drop prematurely.

澳大利亚语言学论文代写:叶子营养检测实验
The experiments for all 6 leaves for two types have similar trends and are easily able to identify the nutrient deficiency and potential diseases in Citrus tree leaf. In order to avoid such issues, corrective measures are needed to be taken care so there will be no deficiency of nutrients in the Citrus tree and these can be taken care before it happens. To do so, fertilizers like calcium ammonium nitrate, ammonium phosphate and urea can be supplied form the beginning so these trees have minimum nutrients needed to stay healthy and grow. Foliar spray of urea to these trees can be quick method to supply required nutrients (Stephen et al., 2000). The basic symptoms to identify such nutrient deficiency in tree leaves are to visualize the chlorosis symptoms in the leaves that help in identifying various types of nutrient deficiency without much experiment or information at the first sight.

 

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