塞耳州湿润残积地块不同地形点土壤肥力特征

Q4 Social Sciences
Maria Cristina Martins Ribeiro De Souza, José Falcão Sobrinho, Francisca Edineide Lima Barbosa
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引用次数: 0

摘要

地形起伏是土壤形成的一个因素,它甚至间接地干扰土壤的物理化学组成,因此在一个地形序列上肥力会发生重大变化。在农业作物方面,肥力的变化对生产力和生产成本有重大影响,因此绘制土壤肥力地图很重要。本研究的目的是评估位于阿拉图巴- ce市的山区不同农作物和不同地形下的土壤肥力。& # x0D;理论参考:将土壤类型与景观联系起来的各种研究表明,较深和较发达的土壤通常位于较平坦或顶部的地形位置,这些位置有利于水的渗透。(ARTUR et al., 2014;SOUZA JUNIOR和DEMATTÊ, 2008)。Braga et al.(2015)证实土壤肥力与树种分布之间存在相关性。 & # x0D;方法:设计采用分块方案随机分组,地块分为四个种植区域,分别为:香蕉树(A1)、香蕉树和腰果树(A2);草(A3);鸽豆(A4);和一个控制区(A5),保持自然植被。子地块由地形顶部、中部和斜坡三个地形位置组成。分析了土壤的理化变量:pH、钾、镁、钙、磷、铝、潜在酸度、碱和碱饱和度、总CEC、有效CTC、PST和土壤密度。 & # x0D;结果:观察到顶部区域有更多的营养成分。对这种性质的研究可以为景观中土壤地貌系统的演变提供指示,并有助于规划最适当和可持续的农业开发。 & # x0D;结论:与中部和斜坡相比,顶部区域呈现出更多的养分,这可能表明,尽管该区域更容易发生淋滤,但淋滤仍然是初期发生的,不会影响该区域的土壤肥力。当地。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Characterization of Soil Fertility at Different Relief Points in a Humid Residual Massif in the State of Ceará
Introduction: The relief acts as a soil formation factor and interferes, even indirectly, in the physical-chemical composition of soils, so that important variations in fertility can occur along a toposequence. In agricultural crops, variations in fertility have a major impact on productivity and production costs, which makes mapping soil fertility important. The aim of this study was to evaluate the fertility of soils under different agricultural crops and different points of relief in a mountainous area located in the municipality of Aratuba-CE. Theoretical reference: Various studies that relate soil types to the landscape show that deeper and more developed soils generally occupy flatter, or top, relief positions, where conditions for water percolation are favored. (ARTUR et al., 2014; SOUZA JUNIOR and DEMATTÊ, 2008). Braga et al. (2015) verified the existence of a correlation between soil fertility and distribution of tree species. Methodology: The design was in a randomized block in a split-plot scheme, with the plots formed by four cultivation areas, namely: banana trees (A1), banana trees and cashew trees (A2); grass (A3); pigeon pea (A4); and a control area (A5), maintained with natural vegetation. The subplots were formed by three relief positions: top, middle and slope. The physical-chemical variables of the soil were analyzed: pH, potassium, magnesium, calcium, phosphorus, aluminum, potential acidity, base sum, base saturation, total CEC, effective CTC, PST and soil density. Results: It was observed that the top areas have greater amounts of nutrients. Studies of this nature can provide indications about the evolution of pedogeomorphological systems in landscapes and enable the planning of the most appropriate and sustainable agricultural exploration. Conclusion: The top area presents nutrients in greater quantities, compared to the middle and slope, which may indicate that, although this region is more susceptible to leaching, this still occurs initially, to the point of not affecting soil fertility in the area. local.
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来源期刊
Revista de Gestao Social e Ambiental
Revista de Gestao Social e Ambiental Social Sciences-Geography, Planning and Development
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