Institute of Agroecology and Plant Production, Faculty of Life Sciences and Technology, Wrocław University of Environmental and Life Sciences, 50-363, Wroclaw, Poland.
Institute of Soil Science, Plant Nutrition and Environmental Protection, Faculty of Life Sciences and Technology, Wrocław University of Environmental and Life Sciences, 50-363, Wroclaw, Poland.
Sci Rep. 2023 Aug 5;13(1):12702. doi: 10.1038/s41598-023-39753-8.
Struvite is regarded as a promising phosphorus fertilizer alternative to mineral fertilizers; however before fertilizing, soil tests should be undertaken to determine fertilizer recommendations. In May 2022, soil was sampled from a pot experiment with the application of phosphorus set up at the Wroclaw University and Environmental and Life Sciences. Chemical analysis of the soil included total and available phosphorus, potassium, magnesium determined by the Egner-Riehm, Mehlich 3 and Yanai methods. The purpose of the article is to compare soil element extraction by three different methods under struvite fertilization and its use in soybean cultivation. The application of these methods indicated an unambiguous increase in soil Mg content after struvite application. Broadcast soybean fertilization affected the phosphorus content of the soil. The results of the study indicated that different extraction methods presented different contents of P from soil. The content of available phosphorus was circa 122-156 mg kg dm, 35.4-67.5 mg kg dm and 100-159 mg kg dm according to the Mehlich, Yanai and Egner-Riehm methods, respectively. A positive correlation was found between the content of Mg and K in soil determined by the Mehlich 3 and Yanai methods, which may suggest that the Yanai method could be introduced into standard soil chemical analysis in Poland. Such a correlation was not found for phosphorus, which is a difficult element to determine due to the multitude of factors affecting its availability.
鸟粪石被认为是一种很有前途的磷肥料替代矿物肥料；然而，在施肥之前，应该进行土壤测试，以确定肥料推荐量。2022 年 5 月，从弗罗茨瓦夫大学环境与生命科学系进行的磷应用盆栽试验中采集了土壤样本。土壤的化学分析包括总磷和有效磷、钾、镁，采用 Egner-Riehm、 Mehlich 3 和 Yanai 法测定。本文的目的是比较在鸟粪石施肥下三种不同方法对土壤元素的提取及其在大豆种植中的应用。这些方法的应用表明，在施用鸟粪石后，土壤中 Mg 的含量明显增加。大豆撒播施肥会影响土壤中的磷含量。研究结果表明，不同的提取方法对土壤中的磷含量有不同的影响。根据 Mehlich、Yanai 和 Egner-Riehm 方法，有效磷的含量分别为 122-156mgkgdm、35.4-67.5mgkgdm 和 100-159mgkgdm。Mehlich 3 和 Yanai 方法测定的土壤中 Mg 和 K 的含量呈正相关，这表明 Yanai 方法可以引入波兰的标准土壤化学分析中。然而，这种相关性在磷中没有发现，因为磷是一种难以确定的元素，因为有很多因素影响其有效性。
