Abstract This study aimed to evaluate the use of spectroradiometry for the determination of soil exchangeable ions after the application of mining coproducts. The treatments were arranged in a double factorial scheme (7 × 2) with complete randomization and ten repetitions, and placed in pots in a greenhouse. The factors evaluated were the input type and soil class (Arenosol and Ferralsol). The inputs were limestone mining coproducts, which were applied in isolation and in blend. After 140 days, exchangeable ions and soil spectra were determined. The application of the coproducts increased the exchangeable ion contents: K+, Mg2+, Ca2+, P, SO42− and Si. Moreover, estimation of the attributes through spectroradiometry showed satisfactory results for the Ca2+, K+ (resin and mehlich-1), P and Si from the soil, with R2 in the prediction phase equal to 0.89, 0.96, 0.87, 0.71 and 0.92. For Mg2+ and SO42−, R2 values were 0.44 and 0.12. Therefore, we conclude, under the conditions described in this paper, that spectroradiometry has the potential to determine some exchangeable ions, similar to routine soil fertility analyses.

中文翻译：

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使用光谱辐射测定法测定采矿副产品后土壤可交换离子的使用评价

摘要 本研究旨在评估光谱辐射测定法在应用采矿副产品后测定土壤可交换离子的用途。处理按双因子方案（7 × 2）安排，完全随机化，重复 10 次，并放置在温室的盆中。评估的因素是输入类型和土壤类别（Arenosol 和 Ferralsol）。投入物是石灰石采矿副产品，它们被单独和混合使用。140 天后，测定了可交换离子和土壤光谱。副产物的应用增加了可交换离子含量：K+、Mg2+、Ca2+、P、SO42- 和 Si。此外，通过光谱辐射测定法对土壤中的 Ca2+、K+（树脂和 mehlich-1）、P 和 Si 进行的属性估计显示出令人满意的结果，预测阶段的 R2 等于 0。89、0.96、0.87、0.71 和 0.92。对于 Mg2+ 和 SO42-，R2 值为 0.44 和 0.12。因此，我们得出结论，在本文所述的条件下，光谱辐射测定法有可能确定一些可交换离子，类似于常规土壤肥力分析。