首页> 外文期刊>Water, air and soil pollution >Phosphorus Losses to Surface Runoff Waters After Application of Digestate to a Soil Over Fertilised with Phosphorus
【24h】

Phosphorus Losses to Surface Runoff Waters After Application of Digestate to a Soil Over Fertilised with Phosphorus

机译:磷损失在用磷施用的土壤中施用消化后的表面径流水域

获取原文
获取原文并翻译 | 示例
       

摘要

Anaerobic digestates from biogas plants can be used as agricultural fertilisers providing recycling nitrogen (N) and other nutrients for crop needs. It is still unclear the impact on phosphorus (P) losses to runoff waters of digestates as sources of N instead of inorganic N fertilisers in over fertilised soils with P. A field experiment was done in a sandy and acidic soil high in P. The experimental design was completely randomised with five treatments. The inorganic N fertilisation (90 kg ha(-1)) was done in four treatments, those with past P inputs of the following: (i) inorganic N and P fertilisers (Ni/MF), (ii) organic amendments (pig or duck dry slurry-Ni/PS and Ni/DS or cattle manure compost-Ni/CM). Digestate was applied in plots with past P input of cattle slurry (DG/CS) providing also 90 kg N ha(-1). Ryegrass was sowed as cover crop. The concentration of total dissolved P in runoff waters was high in all treatments and ranged between 0.5 (Ni/PS) and 2.6 mg L-1 (DG/CS). These runoff waters pose a risk of non-source P pollution for fresh waters. In soils with low P sorption capacity and over fertilised with P, the fertilisation with anaerobic digestate as the only source of N to crops increased the risk of P losses to runoff waters compared with inorganic N fertilisation. Therefore, the amount of digestate applied to soil must be calculated considering its N:P ratio in order to not exceed the crop P requirement.
机译:来自沼气植物的厌氧消化可用作农业肥料,提供循环氮(N)和其他营养物的作物需求。仍然不清楚对消化物的径流(P)损失的影响(P)损失为N的径流,而不是通过P的受精土壤中的无机N肥料。在P的砂质和酸性土壤中进行了田间实验。实验设计完全随机随机分为五种治疗方法。无机N施肥(90kg ha(-1))在四种处理中完成,具有以下P输入的方法:(i)无机N和P化肥(Ni / MF),(ii)有机修正(猪或鸭干浆料-NI / PS和NI / DS或牛粪堆肥 - NI / cm)。消化用过去P输入的牛浆(DG / CS)的PLOTS施用,提供了90kg N HA(-1)。黑麦草被播种为封面作物。径流水中总溶解P的浓度在所有处理中高,范围为0.5(Ni / PS)和2.6mg L-1(DG / CS)。这些径流水域对新鲜水域构成了非源P污染的风险。在具有P的土壤中和对P施用的土壤中,用厌氧消化的施肥作为N对作物的唯一来源增加了与无机N施肥相比的P损失对径流水域的风险。因此,必须考虑其N:P比率来计算施用于土壤的消化量,以便不超过作物P要求。

著录项

  • 来源
    《Water, air and soil pollution》 |2021年第10期|439.1-439.12|共12页
  • 作者单位

    Polytech Inst Castelo Branco Sch Agr Quinta Sra Mercules P-6001909 Castelo Branco Portugal|Polytech Inst Castelo Branco CERNAS IPCB Res Ctr Nat Resources Environm & Soc P-6001909 Castelo Branco Portugal;

    Polytech Inst Castelo Branco Sch Agr Quinta Sra Mercules P-6001909 Castelo Branco Portugal|Polytech Inst Castelo Branco CERNAS IPCB Res Ctr Nat Resources Environm & Soc P-6001909 Castelo Branco Portugal|Polytech Inst Castelo Branco QRural Qual Life Rural World Res Unit Castelo Branco Portugal;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Anaerobic digestate; Eutrophication; Organic fertilisation; Soil legacy phosphorus; Water quality;

    机译:厌氧消化;富营养化;有机施肥;土壤遗传磷;水质;

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱:kefu@zhangqiaokeyan.com

京公网安备:11010802029741号 ICP备案号:京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有
  • 客服微信

  • 服务号