生态农业知识中心

效率:创新型生态农业方法用更少的外部资源带来更高的产出

提升资源利用效率是生态农业系统的一项新属性,通过仔细规划和管理多样性,在系统各构成部分之间形成协同效应。比如,效率方面的一项关键挑战在于全球农田中施用的氮肥仅有不到50%转化为收获产品,其余部分损失在环境中,导致严重的环境问题。

生态农业系统改善对自然资源,尤其是丰富和免费资源的利用,如太阳辐射、大气中的碳和氮元素等。通过促进生物过程以及生物质、营养素和水的循环使用,生产者能够用更少的外部资源,降低成本并减轻资源利用所产生的负面环境影响。最终,减少对外部资源的依赖能够通过提升生产者的自主能力和应对自然或经济冲击的抵御力来赋予其权能。

衡量综合性系统效率的一种方法是土地当量比。土地当量比对比了两种或以上品种(如作物、林木、家畜)共同种养时的单产以及通过单作实现的单产水平。综合性系统往往展示出更高的土地当量比。

因此,生态农业通过必要的生物、社会经济和机构多样性,以及与时空的匹配来推动农业系统,支持提高效率。

 

Database

On June 23, Wednesday, at 11:00 GMT, will be held the second session of the webinar ‘’Agroecology in Community of Portuguese Language Countries: State of Art and Perspectives’’. The webinar will ensure a space for knowledge building to portray the current situation of agroecology in the Community of Portuguese Language...
Guinea-Bissau - Mozambique - Portugal - Sao Tome and Principe
活动
2021
FAO and the International Fertilizer Association (IFA) are pleased to announce the webinar "Fertigation – a tool to simultaneously improve water and nutrient use efficiency", as part of the new series focused on sustainable plant nutrition.Following a successful first event on microbials, this new webinar will focus on fertigation, a...
活动
2021
The co-organizers of the Community of Practice on Family Farming and Agroecology in Latin America and the Caribbean are presenting a Capacity Building Program to contribute to the transformation of more efficient, inclusive, resilient, and sustainable agri-food systems for Better production, Better nutrition, a Better environment, and a Better life,...
活动
2021
The course ''Agroecology: transition towards sustainable food systems'' is a joint effort of FAO and the Latin American Scientific Society of Agroecology (SOCLA). The course stimulates the exchange and promotion of agroecological principles and approaches in the context of territorial development, sustainability and resilience, governance and empowerment of communities and...
活动
2021
NAPPC's mission is to encourage the health of resident and migratory pollinating animals in North America. This year, NAPPC partners will gather virtually from throughout North America and beyond on 19-21 October 2021. KEYNOTE SPEAKERS INCLUDE: 1. ABRAM BICKSLER, PH.D., FOOD AND AGRICULTURE ORGANIZATION OF THE UNITED NATIONS The intersection of sustainable food systems and pollinator...
活动
2021