黑土团聚体有机磷及其组分对长期不同施肥措施的响应
Responses of Organic Phosphorus and Its Fractions to Long-Term Fertilization in Black Soil Aggregates
张秀芝 1牛铭晨 1高纪超 1彭畅 1李强 1焦云飞 1朱平 1高洪军1
作者信息
摘要
以国家黑土肥力与肥料效益监测基地的长期定位施肥试验为平台,从土壤团聚体微环境的角度研究施肥对黑土团聚体有机磷含量及其组分的影响.结果表明,施有机肥显著增加不同粒级团聚体有机磷含量以及活性有机磷(LOP)、中等活性有机磷(MLOP)和中稳性有机磷(MROP)含量.黑土有机磷主要分布在＜0.25 mm的微团聚体中,团聚体中等活性有机磷是团聚体有机磷的主体,有机物料的施入可以促进土壤有机磷向活性较高的形态转化,有利于提高土壤磷素的有效性.
Abstract
This study investigated the influence of long-term localized fertilization on the content and fractions of organic phosphorus in black soil aggregates from the perspective of soil aggregate microenvironment.The results showed that the application of organic fertilizer significantly increased the content of organic phosphorus,labile or-ganic phosphorus(LOP),moderate labile organic phosphorus(MLOP)and moderate resistant organic phosphorus(MROP)in different size aggregates.Organic phosphorus was mainly distributed in microaggregates(＜0.25 mm).MLOP was the main organic phosphorus in aggregates.The application of organic materials can promote the transfor-mation of soil organic phosphorus into more active forms,thereby enhancing the availability of soil phosphorus.
关键词
玉米/长期定位施肥/黑土/团聚体/有机磷Key words
Maize/Long-term localized fertilization/Black soil/Aggregate/Organic phosphorus引用本文复制引用
基金项目
国家重点研发计划项目(2022YFD1500101)
东北植物营养与农业环境重点实验室开放项目(KYJF2023DX018)
农业农村部"科研设施专项运行维护费"(G2022-07-2)
出版年
2024
NETL
NSTL
万方数据