摘要
为揭示生物炭和猪场沼液节水、保肥的性能机理,以黄淮海平原高产农田定位试验为基础,研究了施用生物质炭和猪场沼液对潮土团聚体及氮库形态的影响。结果表明,生物炭和猪场沼液改善了土壤团聚体及密度状况,总孔隙度分别比对照提高了13.63%和6.14%。生物质炭处理下,土壤pH值、全氮及有机质均有所提高;沼液处理下pH值下降,而全氮和有机质显著增加。全氮和有机氮均与粒径5mm以上团聚体正相关,而矿质氮与粒径5mm以上团聚体负相关。
Field experiments with randomized block design in Huanghuaihai plain were conducted to study the effects of biochar and piggery biogas slurry on aquatic soil aggregates andnitrogen forms.The results showed that biochar and piggery biogas slurry could improve soil aggregates and bulk density.Compared with CK,total porosity of biochar and piggery biogas slurrytreatments increased by 13.63% and 6.14%,respectively.The pH,total nitrogen and organic matter all increased under biochar treatmentwhile only organic matter increased under biogas slurry treatment.There was a positive correlation between TN and soil aggregates over 5mm size but a negative correlation between TN and soil aggregates over 5mm size.
出处
《灌溉排水学报》
CSCD
北大核心
2015年第9期20-23,27,共5页
Journal of Irrigation and Drainage
基金
国家自然科学基金青年基金项目(51209209
51209208)
国家高技术研究发展计划(863计划课题)(2012AA101404)
基本科研业务费预算增量项目(2014ZL013)
关键词
生物质炭
猪场沼液
团聚体
氮素形态
biochar
piggery biogas slurry
soil aggregates
nitrogen forms
