相关实验视频

Updated: Jul 8, 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

甘/大豆交叉种植,减少添加的作用,促进了光合作用碳在土壤中被封存

Tantan Zhang^1,2,3, Hu Tang^1,2,3, Peng Peng^1,2,3

¹Key Laboratory of Agro-Environments in Tropics, Ministry of Agriculture and Rural Affairs, South China Agriculture University, Guangzhou, China.

Frontiers in plant science

|December 18, 2023

概括

甘/大豆交叉种植,减少添加气,可以增强土壤的碳捕获. 这种可持续的做法增加了植物生物质,并促进了光合作用碳流入土壤,从而提高了农业生态系统的碳吸收能力.

科学领域:

农业科学农业科学
土壤科学土壤科学
生态生态学生态生态学

背景情况:

在中国,用减少 (N) 添加的甘/大豆杂交作物提高了土壤肥力.
了解植物土壤系统中的碳 (C) 分配在交叉作物和不同含量下至关重要,但有限.

研究的目的:

研究交叉作物模式和N添加对植物-土壤系统中光合作用C分配的影响.
在不同的农业管理实践下量化C封存和微生物利用.

主要方法:

使用13CO2脉冲标记来追踪甘单种 (MS) 和甘/大豆交叉作物 (SB) 系统中的C运动.
与传统的 N 添加 (N2) 水平相比,减少了 N 添加 (N1).
在植物生物质,根排泄物和土壤有机物池 (微生物生物质C,溶解有机C) 中分析了C的分配.

主要成果:

与减少N的交叉作物增加了甘生物质和根生物质,促进了13C流向土壤根系沉积物.
在一天内,超过40%的保留的13C进入了不稳定的土壤池 (微生物生物质C,溶解的有机C).
在第27天之前,插合作物显著增加了微生物生物质C和土壤有机物中的13C含量.
交叉作物也提高了土壤的碳和含量.

结论:

甘/大豆交叉种植减少了N添加,有效地增加了光合作用C在土壤中的封存.
这种做法提高了土壤作为碳汇的能力,为可持续农业做出了贡献.
耕作模式通过根基生物质和不稳定土壤C和N的变化显著影响C封存.

关键词:

13C脉冲标签的使用方法在C循环中,C循环是根的生长根的生长根的生长土壤生物化学土壤生物化学甘/大豆插合作物的插合作物

更多相关视频

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

Author Spotlight: On-Site Biochar Production for Woody Debris Incineration in Forestry

Author Spotlight: On-Site Biochar Production for Woody Debris Incineration in Forestry

Published on: January 5, 2024

相关概念视频

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...

Overview of Nitrogen Metabolism

Overview of Nitrogen Metabolism

Nitrogen is a very important element for life because it is a major constituent of proteins and nucleic acids. It is a macronutrient, and in nature, it is recycled from organic compounds and stored in the form of ammonia, ammonium ions, nitrate, nitrite, or nitrogen gas by many metabolic processes. Many of these metabolic processes are carried out only by prokaryotes.
The largest pool of nitrogen available in the terrestrial ecosystem is gaseous nitrogen (N2) from the air, but this...

C4 Pathway and CAM

C4 Pathway and CAM

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...

Overview of Metabolism

Overview of Metabolism

Living cells constantly carry out various chemical reactions which are necessary for their proper functioning. These reactions are interlinked to one another via multiple pathways. The collection of these chemical reactions is known as metabolism.
Plant Metabolism
Sunlight, the primary source of energy in plants, is first absorbed by the chlorophyll pigments present in their leaves. Plants then use this energy to carry out photosynthesis, where water is oxidized into oxygen and carbon dioxide...

Bioremediation

Bioremediation

Bioremediation is the use of prokaryotes, fungi, or plants to remove pollutants from the environment. This process has been used to remove harmful toxins in groundwater as a byproduct of agricultural run-off and also to clean up oil spills.

The Nitrogen Cycle

The Nitrogen Cycle

Nitrogen atoms, present in all proteins and DNA, are recycled between abiotic and biotic components of the ecosystem. However, the primary form of nitrogen on Earth is nitrogen gas, which cannot be used by most animals and plants. Thus, nitrogen gas must first be converted into a usable form by nitrogen-fixing bacteria before it can be cycled through other living organisms. The use of nitrogen-containing fertilizers and animal waste products in human agriculture has greatly influenced the...