不同磷水平配施有机物料对潮土无机磷组分的影响  

Effects of different phosphorus levels combined with organic materials on the morphology of inorganic phosphorus in fluvo-aquic soil

作　　者：边思文 章可奕 王亚萌 田秀平 Bian Siwen;Zhang Keyi;Wang Yameng;Tian Xiuping(College of Agronomy and Resources Environment,Tianjin Agricultural University,Tianjin 300392,China)

机构地区：[1]天津农学院农学与资源环境学院,天津300392

出　　处：《天津农学院学报》2024年第2期6-11,共6页Journal of Tianjin Agricultural University

基　　金：财政部和农业农村部“国家现代农业产业技术体系”项目(CARS-22)。

摘　　要：采用盆栽试验,在配施油菜绿肥、有机肥和玉米秸秆的4个磷水平潮土上种植冬小麦,采用顾益初-蒋柏藩法对冬小麦种植前和收获后土壤中无机磷组分含量进行测定,研究了有机物料对潮土无机磷组分转化的影响。结果表明:随着施磷量的增加,土壤中无机磷各组分含量均显著增加,不同磷水平配施有机物料,土壤中无机磷各组分含量除Fe-P降低外,其余各组分含量均增加,增施有机物料降低了土壤C_(a10)-P的比例,土壤有效磷含量与C_(a2)-P、C_(a8)-P、Al-P呈极显著正相关(P<0.01),无机磷各组分对有效磷含量的直接贡献顺序为:C_(a2)-P>Al-P>C_(a8)-P>O-P>C_(a10)-P>Fe-P,说明在本区域C_(a2)-P作为主要的有效磷源,与单施磷肥相比,磷肥与有机物料配施显著增加了冬小麦产量及地上部磷含量。In this paper,a pot experiment was conducted to plant winter wheat on four phosphorus levels of aquic soil combined with rape green fertilizer,organic fertilizer and corn straw.The contents of inorganic phosphorus components in soil before planting and after harvest of winter wheat were determined by Gu Yichu-Jiang and Baifan method,and the effects of organic materials on the transformation of inorganic phosphorus components in aquic soil were studied.The results showed that the content of inorganic phosphorus increased significantly with the increase of phosphorus application rate,the content of inorganic phosphorus in organic materials increased at different phosphorus levels except for the decrease of Fe-P,the content of other inorganic phosphorus components increased,and the increase of organic materials reduced the proportion of soil C_(a10)-P.Soil available P was positively correlated with C_(a2)-P,C_(a8)-P and Al-P(P<0.01).Path analysis showed that the direct contribution order of all forms of inorganic phosphorus to available phosphorus was C_(a2)-P>Al-P>C_(a8)-P>O-P>C_(a10)-P>Fe-P,indicating that codomain C_(a2)-P was the main available phosphorus source.Compared with P fertilizer alone,P fertilizer combined with organic materials significantly increased the yield and above-ground P content of winter wheat.

关 键 词：磷肥 有机物料 无机磷组分 

分 类 号：S513[农业科学—作物学]