用于可可生产的肥料中的:哥伦比亚的案例研究
Santiago López-Zuleta1, Edwin E A Cifuentes2, Ruth Quiroga-Mateus2
1Corporación Colombiana de Investigación Agropecuaria - AGROSAVIA, Corregimiento San José del Nus, municipio de San Roque, Antioquia, Colombia.
概括
哥伦比亚可可作物中的 (Cd) 是一个令人担忧的问题. 这项研究发现有机肥料含有更多的Cd,而化学肥料具有更高的生物可用Cd,因此需要更好的肥料管理和监管.
科学领域:
- 农业科学
- 环境化学
- 土壤科学
背景情况:
- 对于哥伦比亚来说,
- 可可豆中的 (Cd) 污染是一个重大问题.
- 肥料是土壤Cd的潜在来源,但它们的Cd含量没有得到充分研究.
研究的目的:
- 在哥伦比亚可可种植中使用的有机物,化学肥料和石灰中的 (Cd) 度量.
- 确定这些输入中的Cd的生物可用分量.
- 评估Cd从肥料到土壤中的流动性.
主要方法:
- 分析了来自哥伦比亚八个省份的133个肥料样本.
- 从10种选定的肥料中顺序提取Cd,分为五种分量 (水溶性,可交换,可减少,可氧化,残留).
- 化实验评估Cd从肥料到土壤的流动性.
主要成果:
- 有机肥料的总Cd含量最高.
- 化学肥料显示出更高的可移动和生物可用Cd分数.
- 在土壤中Cd的保留受肥料类型的影响.
结论:
- 肥料管理需要提高认识和合理化.
- 当局加强监测和对最大Cd限值的新规定至关重要.
- 了解可可种植中的Cd来源对于食品安全至关重要.
更多相关视频
09:13Hydroponics: A Versatile System to Study Nutrient Allocation and Plant Responses to Nutrient Availability and Exposure to Toxic Elements
Published on: July 13, 2016
32.0K
05:52Author Spotlight: Tissue Culture-Free Agrobacterium-Mediated Transformation in Large Woody Plants
Published on: November 17, 2023
2.8K
相关概念视频
02:35Key Elements for Plant Nutrition
21.2K
Like all living organisms, plants require organic and inorganic nutrients to survive, reproduce, grow and maintain homeostasis. To identify nutrients that are essential for plant functioning, researchers have leveraged a technique called hydroponics. In hydroponic culture systems, plants are grown—without soil—in water-based solutions containing nutrients. At least 17 nutrients have been identified as essential elements required by plants. Plants acquire these elements from the...
21.2K
01:27C4 Pathway and CAM
46.2K
Most plants use the C3 pathway for carbon fixation. However, some plants, such as sugar cane, corn, and cacti that grow in hot conditions, use alternative pathways to fix carbon and conserve energy loss due to photorespiration. Photorespiration is the process that occurs when the oxygen concentration is high. Under such conditions, the rubisco enzyme in the Calvin cycle binds O2 instead of CO2, which halts photosynthesis and consumes energy.
C4 Pathway
The C4 pathway is used by plants such as...
C4 Pathway
The C4 pathway is used by plants such as...
46.2K