摘要
选择安徽省淮南市上窑镇粉煤灰处置场覆土复垦地为研究区域,测定覆土厚度和土壤剖面各层的容重、pH、含水量、有机质等理化性质,土壤总氮、有效磷、速效钾等养分含量,以及冬小麦抽穗期的生物量,研究粉煤灰处置场复垦土壤理化性质及其与土壤养分的相关性,不同覆土厚度复垦地冬小麦生长的差异性。结果表明,粉煤灰场复垦地土壤总氮含量约0.90 g/kg,有效磷和速效钾含量分别为12～76 mg/kg、114～135 mg/kg,土壤肥力与作物生长状况和自然农业土壤相比差异不显著;除复垦土壤厚度、容重、含水量对有效磷含量影响显著外,其余土壤养分与土壤理化性质和表土厚度的相关性不强。
The reclaimed field of fly ash disposal sites was selected as the research area in Shaoyao,Huainan.The cover soil thickness,some soil physico-chemical properties(bulk density,water content,pH and organic matter),soil nutrients(total nitrogen,available phosphorus and available potassium) and winter wheat biomass in heading stage were determined,and the correlation of the reclaimed soil physico-chemical properties and its nutrient was analyzed in fly ash disposal sites.The winter wheat growth differences were also studied under different coversoil thickness conditions.The results showed that the total nitrogen content was about 900 mg/kg in reclaimed soil of fly ash disposal sites,the content of available phosphorus and available potassium was 12-76 mg/kg and 114-135 mg/kg respectively.The soil fertility and crop growth conditions were not significant difference with natural agricultural soils.The available phosphorus content and reclaimed soil bulk density,water content had a significant correlation.In addition,the response relationship between the reclaimed soil fertility and its properties,topsoil thickness was not obvious.
出处
《湖北农业科学》
北大核心
2013年第6期1273-1276,共4页
Hubei Agricultural Sciences
基金
国家自然科学基金项目(51274013)
安徽省国际合作项目(10080703026)
关键词
复垦土壤
养分
理化性质
表土厚度
粉煤灰场
reclaimed soil
nutrients
physico-chemical properties
topsoil thickness
fly ash disposal sites
