Household biomass ash as a fertilizer to sustainability improve soil nutrition to enhance rice yields

这项建议旨在改善孟加拉国自给自足农民的命运，通过回收农业和自然环境废物，主要是家庭烹饪燃料的灰烬，为他们提供可持续的高产量水稻。孟加拉国的农用土壤种植过度，因为它们往往一年收获两次，大量施用氮磷钾和锌肥料以保持这种种植强度。这使得未施肥的营养物质（B、Ca、Co、Cu、Mg、Mo、Ni、Se、Si）在作物中年复一年地被去除。在孟加拉国，人们用稻草喂牛，牛粪在家里用作燃料。只有零星的家庭灰烬被添加到土地上。家用燃料也从分散的半天然森林和果园中收集，这些森林和果园是孟加拉国农业景观的典型特征，这些灰烬提供了额外的矿物资源。除了堆肥的生活垃圾、碾米厂废物、动物垫料和园艺作物废物外，还有许多营养丰富的废物流可供开发，用作水田肥料。如果将这些水流重新导向土地，就可以可持续地提高水稻产量，为孟加拉国各地自给自足的稻农提供更多财富和资源。这种为孟加拉国开发的回收方法可以在世界各地使用，适应当地的水稻种植管理和社会实践。该提案分为四个阶段。首先是描述流经孟加拉国物质水稻种植村庄的废物流的营养成分和数量。第二项任务是最大限度地将这些废物流重新导向土地。第三个是通过在孟加拉国20个地理上分开的村庄进行旱季和雨季水稻种植试验，利用这些废物来建立土壤健康和提高水稻产量，测试孟加拉国常见的水稻品种。第四，也是最后，将制定一项管理协议，在孟加拉国的水稻农场传播，以教育利用当地回收资源可持续管理稻田的最佳方法。

This proposal is to improve the lot of the subsistence farmers of Bangladesh by giving them sustainably higher yields of rice, through recycling of agronomic and natural environment wastes, primarily as ash from household cooking fuels. Bangladesh agronomic soils are over cropped as they tend to be harvested twice a year, with the heavily application of NPKS and Zn fertilizers to maintaining this cropping intensity. This leaves the nutrients not fertilized (B, Ca, Co, Cu, Mg, Mo, Ni, Se, Si) being removed year on year in the crop. In Bangladesh rice straw is fed to cattle and the resulting cattle dung used for fuel in the home. Only sporadically is household ash added back to land. Domestic fuel is also collected from the interspersed semi-natural forests and orchards that typify the Bangladesh agronomic landscape, with this ash providing additional mineral resource. Along with composted household waste, rice-mill waste, animal bedding and horticultural crop waste, there are many nutrient rich waste streams to be tapped with respect to use as paddy field fertilizers. If these streams are redirected back to the land enhanced yields of rice can be obtained sustainably, giving more wealth and resources to subsistence rice farmers throughout Bangladesh. This recycling approach developed for Bangladesh can be used throughout the world, adapting to local rice growing management and societal practices. The proposal has four stages. The first is to characterize the nutrient content and quantity of waste streams flowing through Bangladeshi substance rice farming villages. The second task is to maximize ways in which to redirect these waste-streams back to the land. The third is to trial, through both wet and dry season rice cultivation, across 20 geographically separated Bangladeshi villages, the utility of these wastes for building up soil health and increasing rice yields, testing common Bangladeshi rice cultivars. Fourthly, and finally, a management protocol will be derived for dissemination across the rice farms of Bangladesh to educate what are the best ways to sustainably manage paddy fields using local recycled resources.