相关实验视频

Updated: Jul 28, 2025

A Method to Preserve Wetland Roots and Rhizospheres for Elemental Imaging

A Method to Preserve Wetland Roots and Rhizospheres for Elemental Imaging

Published on: February 15, 2021

米粒中的积累通过吸附和增加氨酸的作用而被草类水合物减轻

Shaoning Chen¹, Junhui Xu², Liang Peng¹

¹Department of Environmental Science & Engineering, Hunan Agricultural University, Changsha 410128, PR China.

The Science of the total environment

|May 31, 2023

概括

同时种植草和米,可使米粒中的含量大幅降低,高达50%. 这项技术还通过固定重金属和提高含量来改善土壤健康,为农业提供可持续的解决方案.

科学领域:

农业科学农业科学
环境科学环境科学
土壤科学土壤科学

背景情况:

米粒中的重金属污染是一个越来越令人担忧的问题.
目前正在探索农业学策略来缓解这一问题.
在米中 (Cd) 积累上,草-水利植物 (DH) -大麦共耕的有效性仍未得到充分研究.

研究的目的:

为了研究三种类似藻类的水生植物物种对大米粒中Cd积累的影响.
为了确定DH对可用的Cd含量和大米田的土壤特性的影响.
评估 DH-合作物的潜力,作为可持续的农业实践.

主要方法:

在田中研究了三种DH物种 (Azolla imbricata,Spirodela polyrrhiza,Lemna minor).
测量了米粒中的Cd含量和土壤中可用的Cd.
分析了土壤中形式 (和酸盐) 和pH值.
评估了参与Cd静止的细菌群落.

主要成果:

联合 DH 种植使米粒的 Cd 含量从 0.40 mg/kg 降低到 0.20 mg/kg 以下,其中 A. imbricata 是最有效的 (0.15 mg/kg).
由于DH的吸收,土壤pH的增加和Cd-不动化的细菌的增强,土壤Cd在耕作阶段后减少了10-35%.
观察到土壤调节,氨增加,酸减少,可能会减少大米的Cd吸收.

结论:

类似草的水利植物共同种植有效地降低了米粒中的度.
这项技术减轻了重金属污染和农业非点源污染.
联合 DH-paddy 种植提供了 Cd 减少和固定的双重好处,减少对肥的依赖.

关键词:

吸收方式吸收方式阿佐拉阿佐拉 Azolla 阿佐拉阿佐拉草是一种草.这是一种重金属,重金属.气气是一种气.帕迪·帕迪 (Paddy Paddy) 是一个

更多相关视频

Hydroponics: A Versatile System to Study Nutrient Allocation and Plant Responses to Nutrient Availability and Exposure to Toxic Elements

Hydroponics: A Versatile System to Study Nutrient Allocation and Plant Responses to Nutrient Availability and Exposure to Toxic Elements

Published on: July 13, 2016

An Anaerobic Biosensor Assay for the Detection of Mercury and Cadmium

An Anaerobic Biosensor Assay for the Detection of Mercury and Cadmium

Published on: December 17, 2018

相关概念视频

Responses to Drought and Flooding

Responses to Drought and Flooding

Water plays a significant role in the life cycle of plants. However, insufficient or excess of water can be detrimental and pose a serious threat to plants.

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.

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.

Inorganic Nitrogen Assimilation

Inorganic Nitrogen Assimilation

Nitrogen is an essential element in biological systems, forming a crucial component of proteins, nucleic acids, and other cellular constituents. Many bacteria and archaea acquire nitrogen in the form of nitrate (NO₃⁻) or ammonia (NH₃), which are then assimilated into biomolecules through specific enzymatic pathways.Assimilatory Nitrate ReductionWhen nitrate enters the cell, it undergoes a two-step reduction process known as assimilatory nitrate reduction. Initially, the enzyme...

Responses to Salt Stress

Responses to Salt Stress

Salt stress—which can be triggered by high salt concentrations in a plant’s environment—can significantly affect plant growth and crop production by influencing photosynthesis and the absorption of water and nutrients.