南里奥格兰德州土壤属性及其相互关系

Leonardo Cesar Pradebon, Alexandre Steurer, I. Carvalho, Murilo Vieira Loro, T. A. Segatto, F. S. M. Sanes, Marlon Vinícius da Rosa Sarturi, Inaê Carolina Sfalcin, G. H. Demari
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引用次数: 0

摘要

本研究旨在强调和理解土壤参数水平相互作用的动态,这些参数是作物生产力表达的决定因素。该研究于2017/2018年在南里奥格兰德州西北部的七个城市(Barra do Guarita、Braga、Derrubadas、Miraguaí、reentora、Tenente Portela和Vista Gaúcha)进行。在这些环境中采集土壤样品,共67个土壤样品。大部分土壤的pH值在5,5以上,79%的土壤CEC值在12 ~ 18之间。82%的土壤的碱基饱和度为80%,87%的土壤的铝饱和度为0。在有机质含量方面,60%的土壤钾磷含量在2.5%以上,钾磷含量高、磷含量低。因此,当潜在酸度水平增加时,主要营养素、微量营养素和钙钾比的可用性就会减少。另一方面,当pH值增加时,营养物质的可用性就会增加,潜在的酸度和铝含量也会降低。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Soil attributes and their interralationships in Rio Grande do Sul
The present study aimed to highlight and understand the dynamics of interaction of the levels of soil parameters that are determinant for the expression of crop productivity. The study took place in seven municipalities in the northwest of the state of Rio Grande do Sul (Barra do Guarita, Braga, Derrubadas, Miraguaí, Redentora, Tenente Portela, and Vista Gaúcha), in the year 2017/2018. Soil samples were collected in these environments, with a total of 67 soil samples. Most of the studied soils presented pH above 5,5 with 79% of the samples with CEC between 12 and 18. The values of base saturation in 82% of the soils presented values of 80%, while, for of aluminum saturation, in 87% of the samples the values were 0. As for the contents of organic matter, 60% of the soils presented contents above 2,5% with high and low levels of potassium and phosphorus, respectively. When the levels of potential acidity increase, consequently, there is a reduction in the availability of the main nutrients, micronutrients and the Ca:K ratio. On the other hand, when there is an increase in pH levels, there is a greater availability of nutrients and a reduction in potential acidity and aluminum levels.
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