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的可用性和与长期污水泥和肥的平衡 在玉米单一栽培下的切尔诺泽姆土壤中
Dinkayehu Alamnie Asrade1, Martin Kulhánek1, Jiří Balík1
1Department of Agroenvironmental Chemistry and Plant Nutrition, Faculty of Agrobiology, Food and Natural Resources, Czech University of Life Sciences, 165 00 Prague, Czech Republic.
Plants (Basel, Switzerland)
|August 10, 2024
概括
长期种植玉米显示矿物耗尽了土壤,有可能出现缺乏. 然而,污水污泥改善了的可用性,并积累了土壤储量,表明了可持续的替代方案.
科学领域:
- 土壤科学 土壤科学
- 农业学是一种农业学.
- 环境科学 环境科学
背景情况:
- 持续 27 年的玉米单一栽培影响了土壤 (P) 动态.
- 了解P的可用性,平衡性和吸收性对于可持续农业至关重要.
- 切尔诺泽姆土壤需要特定的营养循环管理策略.
研究的目的:
- 评估矿物和污水污泥对切尔诺泽姆土壤中P的可用性和平衡的长期影响.
- 评估在玉米单一栽培下对干物质 (DM) 产量和P吸收的影响.
- 确定P吸附参数,并确定影响P保持的关键因素.
主要方法:
- 一个持续27年的玉米单一栽培实地实验.
- 处理包括未受精的对照,两剂矿物 (N120,N240) 和两剂污水污泥 (SS120,SS240).
- 分析地面生物质 (DM) 产量,P吸收,土壤P可用性,P平衡和P吸附参数 (包括的作用).
主要成果:
- 随着营养应用而增加的DM产量:Con < SS120 < SS240 < N120 < N240.
- 矿物 (N120,N240) 处理增加了DM产量,但导致了负P平衡,冒着P缺乏的风险.
- 污水污泥 (SS120,SS240) 处理提高了P的可用性和伪总P (P_AR),使P和度超过环境值. 被确定为一个关键的P吸附因子.
结论:
- 在长期的玉米单一栽培中,矿物化肥消耗了土壤的P储量.
- 污水污泥的应用改善了土壤P的可用性,并可能导致P的积累,可能超过环境限制.
- 在切尔诺泽姆土壤中的P吸收中起着重要作用,影响P的可用性和保留.
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