倾斜土壤磁化率及其与农艺指标的关系

O. Kruglov, O. Menshov, L. Horoshkova, B. Kruhlov
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摘要

现代农业综合体需要使用新的方法来确定土壤特征,以便为最新技术提供充分的信息支持,而使用传统方法往往无法提供这些信息。本研究的目的是确定磁力计方法在确定斜坡过程中的信息价值,这些斜坡过程调节使用某些措施来增加土壤肥力和保护土壤免受侵蚀。该研究是在哈尔科夫地区的倾斜农业景观上进行的。本研究使用KLY-2 kappbridge(捷克共和国)和Ohaus 403实验室标度来测定磁化率。选择的土壤样品,按照公认的方法,在正常条件下风干状态。土壤取样在0 ~ 20 cm土层进行。研究结果的可视化和潜在土壤流失的确定(USLE模型)在QGis程序中进行。分析了简单斜坡和复杂斜坡磁化率的相关性。结果表明,在简单斜坡上,土壤磁化率随物理黏土和有机碳含量的增加而增大。因此,该指标与侵蚀过程数学模型(USLE)的结果有高度的联系。对于斜坡的复杂剖面,该方法仅适用于河流景观,而对于累积景观,上述联系就消失了。腐殖质含量-磁化率对的相关系数也减小。这是由于径流盆地中冲刷堆积带和成土岩石出口的交替,而应用USLE潜在土壤流失模型的程序并没有提供这些区域的存在。土壤质谱数据的使用对于与腐殖质含量和粒度组成的分化相关的土壤不均匀性的定位具有很高的潜力
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Magnetic susceptibility of inclined soils and its relationship with some agronomic indicators
The modern agricultural complex requires the use of new methods for determining soil characteristics for adequate information support of the latest technologies, which is often impossible to provide using conventional methods. The purpose of the study is to identify the informative value of magnetometric methods in determining slope processes that regulate the use of certain measures to increase soil fertility and protect soils from erosion. The study was conducted on inclined agricultural landscapes of the Kharkiv region. This study used a KLY-2 Kappabridge (Czech Republic) and an Ohaus 403 laboratory scale to determine magnetic susceptibility. The selected soil samples, in accordance with the accepted methods, were brought to an air-dry state under normal conditions. Soil sampling was conducted from a layer of 0-20 cm. Visualisation of the study results and determination of potential soil losses (USLE model) was performed in the QGis programme. The correlation of magnetic susceptibility on simple and complex slopes was analysed. It was established that on simple slopes, the value of the magnetic susceptibility of the soil has a high value of this indicator with the content of physical clay and organic carbon. Therewith, there is a high degree of connection of this indicator with the results of mathematical modelling of erosion processes (USLE). For complex sections of slopes, the method is correct only for transeluvial landscapes, while for accumulative landscapes, the mentioned connection disappears. The correlation coefficient in the humus content – magnetic susceptibility pair also decreases. This is due to the alternation of washout–accumulation zones and exits of soil-forming rocks in runoff basins, the existence of which is not provided for by the procedure for applying the USLE model of potential soil losses. The use of soil MS data has a high potential for the localisation of soil inhomogeneities associated with the differentiation of humus content and granulometric composition
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