相关实验视频

Updated: Jun 17, 2025

Author Spotlight: Unraveling the Role of Earthworms in Enhancing Mineral Weathering for CO2 Removal

Author Spotlight: Unraveling the Role of Earthworms in Enhancing Mineral Weathering for CO2 Removal

Published on: November 10, 2023

在马里气候变化下优化有机棉花的堆肥施肥类型,日期和剂量:一项建模研究

Ginette Dembélé¹, Romain Loison^2,3,4, Amadou Traoré¹

¹Regional Agricultural Research Center, Institute of Rural Economy (IER), Sotuba, Bamako, Mali.

|August 14, 2024

概括

尽管气候变化,马里的有机棉花农业可以得到改善. 在5月中旬以每公7.5的速度应用小反动物堆肥,可以在各种气候情景下优化未来的产量.

科学领域:

农业科学农业科学
适应气候变化适应气候变化
农业学是一种农业学.

背景情况:

由于气候变化,土壤退化和低于最佳的管理实践,马里有机棉花产量正在下降.
将有机农业系统适应预计的气候变化对于粮食安全和该地区的经济稳定至关重要.

研究的目的:

在未来的气候变化情景下,确定最佳的堆肥应用策略 (类型,日期,剂量) 以提高马里有机棉的产量.
评估DSSAT CSM-CROPGRO-Cotton模型在不同气候条件下模拟有机棉花生长和产量的性能.

主要方法:

利用2021年的实验数据进行DSSAT CSM-CROPGRO-Cotton模型的校准和验证.
在RCP4.5和RCP8.5场景下使用的GFDL-ESM2M气候模型数据用于未来的天气预测 (2020-2079).
评估模型性能,使用表现和收益率的规范化根平均平方误差 (nRMSE) 等指标.

主要成果:

DSSAT模型准确地模拟了棉花的现象学 (化,成熟度),nRMSE<4%.
模拟种子棉花产量模型具有中等准确性 (nRMSE 26%校准,20.3%评估).
从5月中旬开始,在每公7.5的小型反动物堆肥中应用,在各种气候场景中持续提高了产量,超过75%的模拟超过2000公斤/公.

结论:

最佳的堆肥管理,特别是5月中旬的小反动物堆肥7.5t/ha的应用,可以显著提高马里有机棉的产量.
DSSAT作物模型是预测气候变化和管理策略对有机棉花生产的影响的宝贵工具.
积极的适应战略对于维持和提高有机棉花农业在马里气候变化中的适应能力至关重要.

更多相关视频

Simulating Temperature in a Soil Incubation Experiment

Simulating Temperature in a Soil Incubation Experiment

Published on: October 28, 2022

Assessment of Labile Organic Carbon in Soil Using Sequential Fumigation Incubation Procedures

Assessment of Labile Organic Carbon in Soil Using Sequential Fumigation Incubation Procedures

Published on: October 29, 2016

相关概念视频

Adaptations that Reduce Water Loss

Adaptations that Reduce Water Loss

Though evaporation from plant leaves drives transpiration, it also results in loss of water. Because water is critical for photosynthetic reactions and other cellular processes, evolutionary pressures on plants in different environments have driven the acquisition of adaptations that reduce water loss.

What is Climate?

What is Climate?

Climate refers to the prevailing weather conditions in a specific area over an extended period. As the saying goes, “Climate is what you expect. Weather is what you get.” Climate is influenced by geographic factors, such as latitude, terrain, and proximity to bodies of water.

The Calvin Benson Cycle

The Calvin Benson Cycle

Ribulose 1,5- bisphosphate carboxylase/oxygenase (RuBisCo) is a critical enzyme that catalyzes carbon dioxide assimilation during photosynthesis. However, it is an inefficient enzyme, having an extremely slow catalytic rate. A typical enzyme can process about a thousand molecules per second; however, RuBisCo fixes only around three-carbon dioxides per second. Photosynthetic cells compensate for this slow rate by synthesizing very high amounts of RuBisCo, making it the most abundant single...

Key Elements for Plant Nutrition

Key Elements for Plant Nutrition

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...