相关实验视频
Updated: Jul 23, 2025

13:23
A Protocol for Collecting and Constructing Soil Core Lysimeters
Published on: June 6, 2016
11.7K
农业石灰价值链的效率,以减少埃塞俄比亚的土壤酸度
Ali M Oumer1,2, Samuel Diro1, Geremew Taye1
1Holetta Agricultural Research Centre (HARC), Ethiopian Institute of Agricultural Research (EIAR), P.O. Box 2003, Addis Ababa, Ethiopia.
概括
埃塞俄比亚 埃塞俄比亚 埃塞俄比亚
科学领域:
- 农业科学 农业科学
- 土壤科学 土壤科学
- 农业学是一种农业学.
背景情况:
- 土壤酸度影响了埃塞俄比亚43%以上的农田,降低了作物产量.
- 农业石灰 (ag-lime) 是土壤酸性管理的关键解决方案.
- 了解农业石灰价值链对于提高农业生产率至关重要.
研究的目的:
- 评估埃塞俄比亚农业石灰价值链的结构和功能.
- 识别农业供应链中的挑战和机遇.
- 为改善农业石灰采用和解决土壤酸度提供见解.
主要方法:
- 定性研究方法.
- 埃塞俄比亚中部地区的案例研究.
- 通过采访关键信息者和与价值链参与者的焦点小组讨论来收集数据.
主要成果:
- 农业石灰生产设施 (公共和私人) 运行低于容量.
- 由于环境不利,私营部门参与农业石灰价值链是有限的.
- 农民们意识到土壤的酸度,但对农业石灰的采用却很少.
结论:
- 埃塞俄比亚农业石灰价值链是分散的,需要显著的改进.
- 加强农业石灰价值链可以弥合供需差距,并促进采用.
- 改善农业石灰的获取和采用对于埃塞俄比亚的作物生产率和粮食安全至关重要.
相关概念视频
The Citric Acid Cycle: Overview
17.8K
In aerobic organisms, the citric acid cycle is the second stage of cellular respiration wherein molecules derived from the breakdown of carbohydrates, proteins, and fats are oxidized into carbon dioxide and energy. This process is also known as the tricarboxylic acid (TCA) cycle as the first product of the cycle, citric acid, contains three carboxyl groups in its structure. Alternatively, this cycle is also referred to as the Krebs cycle, in honor of its discoverer Sir Hans Krebs.
The citric...
The citric...
17.8K
Microorganisms in Agriculture and Food industry
91
Microorganisms play a crucial role in agriculture and the food industry, contributing to soil fertility, crop protection, and food production. Their functions range from nitrogen fixation and biopesticide production to fermentation and food preservation, making them indispensable to sustainable farming and food safety.Role in AgricultureNitrogen-fixing bacteria, such as Rhizobium (symbiotic) and Azotobacter (free-living), convert atmospheric nitrogen into ammonia through biological nitrogen...
91
Aggregate Cement Ratio
273
The Aggregate Cement ratio refers to the weight of aggregate divided by the weight of cement in a concrete mix. Altering this ratio has profound effects on the concrete's properties. This ratio plays a pivotal role in determining the strength, workability, and durability of concrete. When the Aggregate Cement ratio is higher, the mix is leaner, meaning it has less cement paste to lubricate the aggregate, potentially making the concrete less workable. Such mixes, known as lean, enhance the...
273

