haohan菜地N 2O、CO 2与CH 4排放测定填充柱3M*1/8

浩瀚色谱（山东）应用技术开发有限公通过盆栽模拟试验,探究玉米秸秆生物炭施用对菜地温室气体N2O、CO2与CH4排放及土壤理化性质的影响。结果表明,生物炭施用抑制了菜地N2O排放,NB1(施N 400 kg·hm-2,生物炭20 t·hm-2)和NB2(施N 400kg·hm-2,生物炭40 t·hm-2)的N2O累积排放量分别比N处理(施N 400 kg·hm-2)低76.4%和70.7%,但抑制效应并未随生物炭用量的增加而加强。生物炭施用增强了CO2排放,但对CH4排放影响不显著。NB1和NB2累积CO2排放量分别为N处理的1.8和2.1倍,不容忽视的是,这2种处理同时增加了土壤中有机碳含量,分别比N处理高15.2%与21.3%。NB1和NB2在不降低甚至提高蔬菜产量的基础上,提高了土壤中NH4+-N含量与p H值,降低了NO3--N含量。p H值和NH4+-N含量分别平均比N处理高0.265和34.9%,NO3--N含量平均比N处理低12.7%,因此生物炭具有减排N2O与改良菜地土壤质量的巨大潜力。但生物炭引起的CO2排放以及对土壤有机碳增加的净影响效应尚需进一步研究。

名称：填充柱
规格：3m*1/8
型号：HH-N2O-III
应用：甲烷，二氧化碳和一氧化二氮的测定
Haohan Chromatographic (Shandong) Application Technology Development Co., Ltd. explored the effects of biochar application of corn straw on greenhouse gas N2O, CO2 and CH4 emissions and soil physical and chemical properties through pot experiments. The results showed that biochar application inhibited N2O emissions from vegetable fields. The cumulative N2O emissions of NB1 (application of N 400 kg · hm-2, biochar 20 t · hm-2) and NB2 (application of N 400 kg · hm-2, biochar 40 t · hm-2) were 76.4% and 70.7% lower than that of N treatment (application of N 400 kg · hm-2), respectively, but the inhibition effect did not increase with the increase of biochar amount. Biochar application enhanced CO2 emissions, but had no significant impact on CH4 emissions. The cumulative CO2 emissions of NB1 and NB2 were 1.8 and 2.1 times of that of N treatment respectively. It should not be ignored that these two treatments simultaneously increased the organic carbon content in soil, 15.2% and 21.3% higher than that of N treatment respectively. NB1 and NB2 increased NH4+- N content and pH value in soil, and decreased NO3 - N content on the basis of not reducing or even increasing vegetable yield. The pH value and NH4+- N content were 0.265 and 34.9% higher than that of N treatment on average, respectively, and the NO3 - N content was 12.7% lower than that of N treatment on average. Therefore, biochar has great potential to reduce N2O and improve vegetable soil quality. However, the CO2 emission caused by biochar and its net effect on the increase of soil organic carbon need further study.



Name: Filled column

Specification: 3m * 1/8

Model: HH-N2O-III

Application: Determination of methane, carbon dioxide and nitrous oxide