Restoring fertility to soils after topsoil stripping for brick production in Bangladesh through harnessing agro-ecosystem waste-streams.

通过利用农业生态系统废物流,在孟加拉国剥离表土用于制砖后恢复土壤肥力。

基本信息

  • 批准号:
    BB/S014489/1
  • 负责人:
  • 金额:
    $ 81.35万
  • 依托单位:
  • 依托单位国家:
    英国
  • 项目类别:
    Research Grant
  • 财政年份:
    2019
  • 资助国家:
    英国
  • 起止时间:
    2019 至 无数据
  • 项目状态:
    已结题

项目摘要

The striping of topsoil is very common in the agronomic regions abutting urban centres in Bangladesh. As urban centres have been growing exponentially in Bangladesh, particularly around the mega-city of Dhaka, the focus of this study, there are concerns regarding food security due to loss of agricultural land, and the degradation of surrounding agronomic land that has had its topsoil removed. Estimates for the amount of land impacted in peri-urban zones of the Indian-sub-continent through topsoil stripping are 10%. Crop yields from the subsoils left after topsoil removal, even with excess fertilization, decrease by over 50%, impacting subsistence farmers. As clay from soil is the only source of building material, it is unlikely that the practice of stripping soils for brick production will stop or decline in Bangladesh, thus there is a great need to find ways of restoring fertility to impacted soils. We proposed to do this by harnessing nutrient rich agronomic waste streams that are common in Bangladesh agri-ecosystems to rapidly restore impacted soil to full cropping potential. These nutrient rich waste streams include manures, oil cake, rice husks & biomass ash. The grant proposal plans to optimise how these waste streams can be applied to subsoils to fully restore soil sustainability, at a low cost to the farmer, & thereby enhancing the food security of the region. The proposal has two stages. The first is to characterize the nutrient content and quantity of waste streams flowing through Bangladeshi substance rice farming communities and then maximize ways in which to redirect these waste-streams back to the land. The second is to trial, through both wet and dry season rice cultivation, across 9 geographically separated Bangladeshi villages, the utility of these wastes for building up soil health and increasing rice yields, testing common Bangladeshi rice cultivars.
在孟加拉国毗邻城市中心的农业区,表土剥离现象非常普遍。由于孟加拉国的城市中心呈指数级增长,特别是在本研究的重点达卡特大城市周围,人们对农业用地的丧失以及周围表土被移走的农业用地退化造成的粮食安全感到关切。据估计,印度次大陆城市周边地区因表土剥离而受到影响的土地面积为10%。去除表土后留下的底土的作物产量,即使过量施肥,也会减少50%以上,影响到自给农民。由于土壤中的粘土是建筑材料的唯一来源,孟加拉国不太可能停止或减少剥离土壤用于制砖的做法,因此非常需要找到恢复受影响土壤肥力的方法。我们建议通过利用孟加拉国农业生态系统中常见的营养丰富的农业废弃物流来实现这一目标,以迅速恢复受影响的土壤以充分发挥种植潜力。这些营养丰富的废物流包括粪肥、油饼、稻壳和生物质灰。该赠款提案计划优化如何将这些废物流应用于底土,以充分恢复土壤的可持续性,对农民来说成本较低,从而提高该地区的粮食安全。该提案分为两个阶段。第一个是确定流经孟加拉国物质稻米种植社区的废物流的营养成分和数量,然后尽可能地将这些废物流重新引导回土地。第二个项目是在孟加拉国9个地理上分散的村庄,通过湿季和旱季水稻种植,试验利用这些废物来建立土壤健康和增加水稻产量,测试孟加拉国的常见水稻品种。

项目成果

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Andrew Meharg其他文献

Rice grain quality alteration through manipulation of parboiling procedures to affect the concentration of macro- and micro- nutrient elements, B-vitamins, inorganic toxicants, and bacterial contamination
通过操纵蒸谷工艺改变大米品质,以影响常量和微量营养元素、B族维生素、无机毒物以及细菌污染的浓度
  • DOI:
    10.1016/j.foodchem.2025.143782
  • 发表时间:
    2025-07-01
  • 期刊:
  • 影响因子:
    9.800
  • 作者:
    Andrew Meharg;Mukhlesur Rahman;Manus Carey;Kathryn Ralphs;Jonathan McComb;Coalain McCreanor;Mahmud Sumon;Rafiqul Islam;Mohammed Uddin;Muhammad Siddique;Saiful Islam;Caroline Meharg
  • 通讯作者:
    Caroline Meharg

Andrew Meharg的其他文献

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{{ truncateString('Andrew Meharg', 18)}}的其他基金

OPTIMIZING RICE NUTRITION THOUGH POST-HARVEST PROCESSING
通过收获后加工优化大米营养
  • 批准号:
    BB/T008822/1
  • 财政年份:
    2020
  • 资助金额:
    $ 81.35万
  • 项目类别:
    Research Grant
MIDST-CZ: Maximising Impact by Decision Support Tools for sustainable soil and water through UK-China Critical Zone science
MIDST-CZ:通过中英关键区域科学,最大限度地发挥可持续土壤和水决策支持工具的影响
  • 批准号:
    NE/S009108/1
  • 财政年份:
    2019
  • 资助金额:
    $ 81.35万
  • 项目类别:
    Research Grant
Household biomass ash as a fertilizer to sustainability improve soil nutrition to enhance rice yields
家庭生物质灰作为肥料,可持续改善土壤营养,提高水稻产量
  • 批准号:
    BB/P022758/1
  • 财政年份:
    2017
  • 资助金额:
    $ 81.35万
  • 项目类别:
    Research Grant
Using Critical Zone Science to Enhance Soil Fertility and Sustain Ecosystem Services for Peri-Urban Agriculture in China
利用关键区域科学提高土壤肥力并维持中国城郊农业的生态系统服务
  • 批准号:
    NE/N007417/1
  • 财政年份:
    2016
  • 资助金额:
    $ 81.35万
  • 项目类别:
    Research Grant
Characterizing genetic & soil induced variation in arsenic uptake translocation & metabolism in rice to mitigate arsenic contamination in Asia.
表征遗传
  • 批准号:
    BB/H531727/1
  • 财政年份:
    2010
  • 资助金额:
    $ 81.35万
  • 项目类别:
    Research Grant
When was Cornish tin mined and processed in prehistory?
康沃尔锡在史前何时开采和加工?
  • 批准号:
    NE/G009880/1
  • 财政年份:
    2009
  • 资助金额:
    $ 81.35万
  • 项目类别:
    Research Grant
Characterizing genetic & soil induced variation in arsenic uptake translocation & metabolism in rice to mitigate arsenic contamination in Asia
表征遗传
  • 批准号:
    BB/F004184/1
  • 财政年份:
    2007
  • 资助金额:
    $ 81.35万
  • 项目类别:
    Research Grant

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