小麦生长早期吸附铵的吸收和淋失

IF 1.2 Q4 ENVIRONMENTAL SCIENCES
B. Foereid, E. Alvarenga, J. Szőcs, M. Makádi
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引用次数: 2

摘要

目的:吸附可能是一种将营养物质浓缩在稀释后的废物流中,从而将更多营养物质带回农业的方法。本研究的目的是通过在沸石吸附剂中添加氮(N)来模拟废液流中吸附的NH4+含量的命运,并研究其对早期生长和潜在浸出损失的影响。方法以小麦为试验作物,采用两种土壤类型进行盆栽试验。测定了土壤中矿质氮含量,并进行了淋溶试验。将15N标记的铵吸附到沸石上。并与常规方式施用铵肥、添加和不添加沸石的效果进行了比较。结果与常规施用铵相比,吸附铵的早期吸收量降低了56%,土壤吸收量只在很早就得到补偿。沸石吸附氮后,砂质土壤渗滤液中硝酸盐浓度降低12%。然而,当氮吸附于沸石时,水通过剖面的浸出量增加了71%,因此,当氮吸附于沸石时,只有降低N损失的趋势。结论吸附在沸石上的氨氮比常规施氮的植物可利用性更低,但也不容易浸出损失。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Uptake and leaching of sorbed ammonium during early growth of wheat
Purpose Sorption could be a way to concentrate nutrients in diluted waste streams to bring more nutrients back to agriculture. The aim of this work was to model the fate of sorbed NH4+ content in liquid waste streams by adding nitrogen (N) sorbed to a sorbent, zeolite, and study its effect on early growth and potential leaching losses. Methods A pot experiment with two soil types and wheat as test crop was conducted. Mineral N in soil was measured, and a leaching experiment performed. 15N labelled ammonium was sorbed to zeolite. The fertilizer effect was then compared to ammonium fertilizer applied the conventional way, with and without zeolite. Results Early uptake of sorbed ammonium was reduced by 56% compared to ammonium applied conventionally, and soil uptake compensated only very early. Nitrate concentration in leachates was reduced by 12% in sandy soil when N was applied sorbed to zeolite. However, leaching of water through the profile increased 71% when N was applied sorbed to zeolite, so that there was only a tendency to lower N losses when N was applied sorbed to zeolite. Conclusion Ammonium-N sorbed to zeolite is less plant available than conventionally applied N but may also be less prone to leaching losses.
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来源期刊
CiteScore
2.10
自引率
26.70%
发文量
0
审稿时长
13 weeks
期刊介绍: The International Journal of Recycling of Organic Waste in Agriculture is an open access journal that publishes high-quality solicited and unsolicited articles, in all areas of Recycling of organic waste including: -Solid waste reuse in agriculture -Waste water reuse in agriculture -Utilization of organic wastes: composting -Ways to reduce, reuse and recycle organic waste -Social and economic impact of reduction, reuse and recycling of organic waste in agriculture -Methods to raise the public awareness of recycling and reuse of organic waste in agriculture -Organic waste utilization in animal and poultry nutrition -Urban food waste composting
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