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Analysis of phosphorus migration into soil profiles fertilized with struvite

机译:磷肥在鸟粪石施肥土壤剖面中的迁移分析

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The focus of the present study was on phosphorus migration into soil profile fertilized with struvite with various doses (0.0 g – control, 0.1 g, 0.5 g and 1.0 g). Lysimeter examinations were carried out in 3 columns which modelled 3 levels of soil washing (10, 20 and 30 cm) for each soil mixture with specific struvite doses. Each experiment consisted in flushing water through a column filled with a mixture, with an amount modelling the average annual rainfall for the area of the city of Czestochowa, Poland, adopted at the level of 650 mm. The tests were conducted for 12 days, with simulation of monthly rainfall performed on each day. The phosphorus content was analyzed in the leachate. It was found based on the results that the amount of leached phosphorus was directly connected with the struvite dose in the mixture. The highest phosphorus concentrations were observed at the level of 20 cm of the height of soil profile for the dose of 0.1 g struvite. In the case of the higher struvite doses, i.e. 1.0 g, the highest concentration was found for the height of 30 cm. A decline in concentration of the leached phosphorus was observed after the sixth sampling of the eluate, which resulted from leaching the soil profile with simulated annual rainfall amount.
机译:本研究的重点是磷在不同剂量(0.0 g –对照,0.1 g,0.5 g和1.0 g)的鸟粪石施肥下向土壤剖面的迁移。在3根色谱柱上进行了蒸渗仪检查,模拟了每种具有特定鸟粪石剂量的土壤混合物的3种土壤洗涤水平(10、20和30 cm)。每个实验都包括通过装满混合物的柱子冲洗水,其数量模拟了波兰Czestochowa市平均年降雨量,采用的水平为650 mm。测试进行了12天,并模拟了每天的每月降雨量。分析渗滤液中的磷含量。根据结果​​发现,浸出的磷的量与混合物中鸟粪石的剂量直接相关。对于0.1 g鸟粪石,在土壤剖面高度20 cm处观察到最高的磷浓度。对于较高的鸟粪石剂量,即1.0g,在30cm的高度发现最高浓度。在第六次采样洗出液后,观察到淋溶磷的浓度下降,这是由于用模拟的年降水量淋溶了土壤剖面而造成的。

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