长期甘蔗收获制度对巴西林哈雷斯- es台地土壤作物生产性能、微量元素有效性和土壤有机碳的影响

IF 2 3区 农林科学 Q2 AGRONOMY
Giovane Leal de Souza Silva, Margarida Gorete Ferreira do Carmo, Eduardo Lima
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引用次数: 0

摘要

在巴西,不燃烧的甘蔗收获已经成为现实,对甘蔗种植带来的影响仍未完全了解。本研究评估了不同的甘蔗收获系统——燃烧(B)、未燃烧(U)及其交替——对作物生产力、果汁和秸秆技术参数、土壤微量元素和有机碳(OC)水平的长期影响(32年)。这项试验始于1989年,覆盖了Espírito Santo-Brazil的四个种植周期。实验区由五个街区和四个地块组成。处理包括未烧采、烧采及其在周期内的交替。评估于2021年进行,即第四个周期的第5个月。对其汁和茎的生产效率和工艺质量进行了分析。在不同深度采集土壤样品,分析OC含量和微量元素B、Cu、Fe、Mn和Zn。收获方式组合不影响干叶、干顶和干茎的产量,也不影响技术参数。平均B和Fe含量充足,而Cu、Mn和Zn低于推荐水平。不同采伐制度下,铜、铁、锰含量差异显著。32年采收方式对作物的产量和技术参数没有影响,但不同采收方式对除B和Zn外的微量元素和有机碳含量有影响。虽然燃烧系统显示出一些积极的反应,但由于环境问题,不建议继续使用。应优先考虑可持续替代品,以确保土壤长期健康和甘蔗的生存能力。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Impact of a long-term sugarcane harvesting system on crop performance, micronutrient availability, and soil organic carbon in tableland soils of Linhares-ES, Brazil

Unburned sugarcane harvesting has become a reality in Brazil, bringing impacts on sugarcane cultivation that are still not fully understood. This study evaluates the long-term impact (32 years) of different sugarcane harvesting systems—burned (B), unburned (U), and their alternation—on crop productivity, juice and stalk technological parameters, and soil micronutrient and organic carbon (OC) levels. The experiment, initiated in 1989, covered four cultivation cycles in Espírito Santo—Brazil. The experimental area comprised five blocks with four plots. Treatments included unburned harvesting, burned harvesting, and their alternations during the cycles. Evaluations were carried out in 2021, on the 5th ratoon of the fourth cycle. Productivity and technological quality of the juice and stalk were analyzed. Soil samples were collected at different depths and analyzed for OC content and the micronutrients B, Cu, Fe, Mn and Zn. Harvesting method combinations did not affect the productivity of dry leaves, tops, or stalks, nor the technological parameters. Average B and Fe contents were adequate, while Cu, Mn, and Zn were below recommended levels. The contents of Cu, Fe and Mn varied significantly between harvesting systems. While the harvesting systems over 32 years did not influence the productivity and technological parameters of the crop, the levels of micronutrient, except for B and Zn, and OC were affected by the different harvesting approaches. Although burned systems showed some positive responses, their continued use is not recommended due to environmental concerns. Sustainable alternatives should be prioritized to ensure long-term soil health and sugarcane viability.

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来源期刊
Sugar Tech
Sugar Tech AGRONOMY-
CiteScore
3.90
自引率
21.10%
发文量
145
期刊介绍: The journal Sugar Tech is planned with every aim and objectives to provide a high-profile and updated research publications, comments and reviews on the most innovative, original and rigorous development in agriculture technologies for better crop improvement and production of sugar crops (sugarcane, sugar beet, sweet sorghum, Stevia, palm sugar, etc), sugar processing, bioethanol production, bioenergy, value addition and by-products. Inter-disciplinary studies of fundamental problems on the subjects are also given high priority. Thus, in addition to its full length and short papers on original research, the journal also covers regular feature articles, reviews, comments, scientific correspondence, etc.
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