摘要
采用生活污泥、牛粪和中药渣3种有机物料作为有机肥源改良新围垦滩涂土壤,对改良过程中黑麦草的生长及滩涂土壤理化性质的变化进行比较研究。结果表明:施用生活污泥、牛粪和中药渣均能改善新围垦滩涂土壤的理化性状,降低滩涂土壤pH及盐分含量,增加土壤有机质含量,改善滩涂土壤氮、磷养分的供应,且促进所种植物黑麦草的生长。在这一试验条件下,生活污泥用量75t·hm-2处理促进黑麦草生物量累积的效果最好;对黑麦草根系生长的促进效果由大到小依次为生活污泥、牛粪、中药渣。
Land resources are relatively deficient in China.Mudflats after organic amendment can be an important alternative cropland reservoir in China.In mudflat reclamation,organic matter amendment is an essential step for soil maturation before crops can be grown.The objective of the present work was to investigate and compare the impacts of dairy manure（DM）,traditional Chinese medicine dregs（TCMD）and municipal sewage sludge（SS）amendments at 0,30,75,150,and 300t·hm-2 rates on physicochemical properties of mudflat soil.The results showed that the application of DM,TCMD and SS obviously improved physicochemical properties of mudflat soil by decreasing the pH and salinity,increasing organic matter,and improving fertility of N and P of mudflat soil,which led to an enhanced ryegrass growth in mudflat soil.In this study,the highest biomass of ryegrass was observed in SS amendment treatment,and the increment in root growth of ryegrass were in the order of SS DM TCMD.
出处
《扬州大学学报（农业与生命科学版）》
CAS
北大核心
2015年第2期51-56,共6页
Journal of Yangzhou University：Agricultural and Life Science Edition
基金
国家自然科学基金资助项目(31101604)
中国科学院土壤与农业可持续发展国家重点实验室开放课题(Y412201402)
江苏省高校自然科学基金资助项目(12KJB210008)
住房与城乡建设部科学技术计划项目(2014-K6-009)
关键词
滩涂土壤
有机物料
理化性质
黑麦草
mudflat soil
organic materials
physicochemical properties
ryegrass
