中文摘要：

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。

英文摘要：

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.