Abstract. The presented research deals with the issue of the potential effect of adjuvants/wetting agents (WA) added to the spray mixture for stability of soil aggregates (SAS) in agricultural soil. Nine localities were chosen in the Czech Republic. Each locality was mapped using soil pits (depth min. 1.4 m). A total of 54 mixed samples were collected from the topsoil horizon in the selected localities. The samples were exposed to the action of four different types of wetting agents (organosilicone wetting agent; methyl ester of rapeseed oil; mixture of methyl ester palmitic and oleic acids; Isodecyl alcohol ethoxylate). SAS was determined before and after the addition of WA. Average values of SAS across the sampling point exhibited a demonstrable trend: the SAS value of control sample (without WA application) was at all times higher than in samples with the addition of WA (organosilicone wetting agent; mixture of methyl ester palmitic and oleic acids; Isodecyl alcohol ethoxylate), on average by more than 15 %. If the measured SAS values are compared in terms of overall means, it is obvious that the control variant always exhibited the highest SAS value (44.04 %) and the variants with the application of WA showed always SAS values lower by min. 16 %. All soil samples were also analysed for basic soil parameters (glomalin, Cox, pH, Na, P, Ca, K, Mg) in order to determine their potential influence on SAS and a possible elimination of the negative impact of WA. In this respect, only a significant influence of Cox content on SAS was recorded, which positively correlated with SAS.

中文翻译：

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添加到农业喷雾剂中的润湿剂对土壤团聚体稳定性的潜在影响

摘要。所提出的研究涉及添加到喷雾混合物中的助剂/润湿剂 (WA) 对农业土壤中土壤团聚体 (SAS) 稳定性的潜在影响问题。捷克共和国选择了九个地点。每个地点都使用土坑（深度最小 1.4 m）绘制地图。从选定地点的表土层共收集了 54 个混合样品。样品暴露于四种不同类型的润湿剂（有机硅润湿剂；菜籽油甲酯；棕榈酸和油酸甲酯的混合物；异癸醇乙氧基化物）的作用下。在加入WA之前和之后测定SAS。整个采样点的 SAS 平均值表现出明显的趋势：对照样品（未使用 WA）的 SAS 值始终高于添加 WA（有机硅润湿剂；棕榈酸甲酯和油酸甲酯混合物；异癸醇乙氧基化物）的样品，平均高出 15% 以上. 如果根据总体平均值比较测量的 SAS 值，很明显，对照变体总是表现出最高的 SAS 值 (44.04 %)，而应用 WA 的变体总是显示出 SAS 值低一分钟。16%。还分析了所有土壤样品的基本土壤参数（球藻素、Cox、pH、Na、P、Ca、K、Mg），以确定它们对 SAS 的潜在影响以及可能消除 WA 的负面影响。在这方面，只记录了 Cox 含量对 SAS 的显着影响，与 SAS 呈正相关。