期刊论文

Effects of organic and inorganic nitrogen fertilizer on soil carbon dioxide and methane emissions of lettuce(Lactuca ativa L.)

中文

中国土壤与肥料

1673-6257

2019

2019

3

29-35

10.11838/sfsc.1673-6257.18262

国家科技支撑计划项目(2018YFD0800500) 湖南省重点研发计划项目(2016JC2030)。

本校为第一机构

采用静态箱—气相色谱法研究不同种类有机无机肥料配合施用对盆栽莴苣土壤二氧化碳(CO_2)和甲烷(CH4)排放规律及排放量的影响。以等氮(N)用量为基准,磷(P)、钾(K)用量相应折算,分别以猪粪、沼渣沼液、猪粪堆肥与化肥进行配施,且各处理N、P、K总施用量一致。共设置6个处理:不施肥(CK);不施氮肥(PK);施纯化肥(NPK);有机无机肥配施1(20%猪粪N+80%化肥N,NPKM1);有机无机肥配施2(20%沼渣沼液N+80%化肥N,NPKM2);有机无机肥配施3(20%猪粪堆肥N+80%化肥N,NPKM3)。结果表明:莴苣全生育期内土壤CH4排放各处理呈现“源”、“汇”交替现象,各时间测点排放通量在每次施肥后均呈现升降波动趋势,直至总体趋于平...

The objective of this study was conducted to investigate the effects of different organic and inorganic nitrogen(N) fertilizer applications on soil carbon dioxide(CO_2)and methane(CH4)emissions of lettuce(Lactuca sativa L.)by static box-gas chromatographic method using pot experiment.Applying N as a standard,pig manure,biogas manure and pig manure composting were combined with chemical fertilizers in the same total N,phosphorus(P),potassium(K)contents. There were six treatments,including no fertilizer(CK),no N fertilizer(PK),pure inorganic fert...