期刊论文

Effects of Combined Application of Organic and Inorganic Nitrogen Fertilizers on Soil Nitrous Oxide Emission from Lettuce (Lactuca sativa L.) Fields

中文

土壤

0253-9829

2019

51

4

641-647

10.13758/j.cnki.tr.2019.04.003

国家重点研发计划项目(2018YFD0800500) 湖南省重点研发计划项目(2016NK2112)资助。

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氮肥配合施用对盆栽莴苣土壤N_2O排放规律及排放量的影响。试验设置不施肥(CK)、不施氮肥(PK)、施纯化肥(NPK)、有机无机肥配施1(20%猪粪氮+80%化肥氮,NPKM1)、有机无机肥配施2(20%沼渣沼液氮+80%化肥氮,NPKM2)和有机无机肥配施3(20%猪粪堆肥氮+80%化肥氮,NPKM3)共6个处理。结果表明:莴苣生育期各处理施肥后土壤N_2O排放出现多个峰值,出峰时间和大小不一;累积排放量随着生育期的进程逐渐增加,处理间差异更为明显。莴苣生育期各处理土壤N_2O平均排放通量及累积排放量范围分别为0.10 ~ 0.25 mg/(m~2 h)和1.37 ~ 3.42 kg/hm~2,大小均表现为NPK>NPKM2>PK>...

A pot experiment was conducted with static box-gas chromatographic method to investigate the effects of different combined application of organic and inorganic nitrogen (N) fertilizers on soil N_2O emissions from lettuce (Lactuca sativa L.) field. There were six treatments, including 1) no fertilizer (CK), 2) no N fertilizer (PK), 3) pure fertilizer (NPK), 4) organic and inorganic fertilizer 1 (20% pig manure N + 80% chemical fertilizer N, NPKM1), 5) organic and inorganic fertilizer 2 (20% biogas manure N + 80% chemical fertilizer N, NPKM2), and 6) organic and inorganic fertilizer 3 (20% pig m...