1) N_2O emission rate
N2O排放速率
1.
The results showed that meadow marsh soil and humus marsh soil had a similar change range of N_2O emission rate(0.
应用C2H2抑制原状土柱培育法研究了三江平原典型小叶章湿地土壤N2O排放速率及反硝化速率的变化,分析了它们与环境因子的关系,并估算了N2O排放量及反硝化损失量。
2) N2O emission rate
N2O释放速率
1.
The results showed: soil N2O emission rate increased with increase of soil water regime (from 3% to 22% ), and it turned weaker and weaker when water content exceeded the soil water capacity (40% ) in the drab soil of northwestern arid and semiarid areas.
结果表明,西北干旱半干旱地区褐土在较低的湿度范围内(3%～22%),土壤中N2O释放速率与土壤湿度呈正相关;土壤湿度接近田间持水量(22%)时,释放速率最大;超过田间持水量(40%)时,N2O释放速率越来越弱。
3) N2O emission
N2O排放
1.
Two uplands of different reclamation years(since 1987 and 1993,respectively) were selected in our study to research the effect of cultivation years, precipitation,soil moisture and plant on N2O emission.
以三江平原沼泽湿地不同开垦年限(1987年、1993年开垦)的旱田(种植方式为大豆-冬闲)为研究对象,探讨了种植年限、降雨、土壤湿度以及植物参与对旱田N2O排放的影响。
2.
N2O emission was measured in rape growing season of a rice-rape rotation system in the Chengdu plain from November 2004 to May 2005.
利用静态箱—气相色谱法测定了成都平原2004年11月至2005年5月水稻—油菜轮作系统油菜季N2O排放通量。
3.
The results showed,1) Nitrogen fertilizer application enhanced the N2O emission significantly.
通过不同施氮水平与不同氮肥品种2个田间试验,结合静态箱-气相色谱法研究了川中丘陵区2005年5~9月石灰性紫色土-玉米根系系统的N2O排放变化。
4) n2o emission
N2O排放量
1.
The intact soil core-acetylene inhibition technique was used to study the effects of N-fertilizer application rates and types on the denitrification losses and N2O emissions in a calcareous purple soil-maize crop system in the upland area of central Sichuan Basin.
利用原状土柱-乙炔抑制法对不同施氮量和不同氮肥品种下紫色土种植玉米期间的N2O排放量和反硝化损失量进行测定。
5) Nitrous oxide emission
N2O排放
1.
Study on its economic significance and nitrous oxide emission of this practice can provide theoretical and practical basis for further development and utilization of this classical agricultural technique.
稻鸭共作技术是中国传统农业的精华,研究稻鸭共作生态系统中N2O排放产生的环境效应并对其经济价值进行评价,为进一步开发利用这一经典农艺提供理论基础和实践依据。
2.
The new research progress of nitrous oxide emission from agricultural soil was summarized and analyzed,including the key influencing factors(soil moisture,pH value,soil temperature,soil texture and fertilization),mitigation measures and models.
对农田土壤N2O排放的主要影响因素(包括土壤含水量、土壤pH值、土壤温度、土壤质地和肥料施用等)、已有农田土壤N2O排放减排措施及估算模型的研究进展进行了总结分析,并指出了今后研究的重点和方向:(a)探究农田土壤N2O排放的内在机制;(b)提高预测模型的精度;(c)提出科学合理的减排措施。
6) N 2O emission
N2O排放
补充资料：《大气污染物综合排放标准》(GB16297—1996)
《大气污染物综合排放标准》(GB16297—1996)
Integrated Emission Standard of Air Pollutants
、产切‘沪，‘，丫lO闪iwuronwuZonghe而而ngBicozhun《大气污染物综合排放标准)( GB 16297一19%)(加吨哪翻召动‘3fon及翔舰么rd ofA介护bll~)该标准于1卯7年l月1日起实施，是在原有工业“三废”排放试行标准废气部分和有关行业大气污染物排放标准的基础上制定，在技术内容上与原有各标准有一定的继承关系，亦有相当大的修改和变化。规定了二氧化硫、氮氧化物、颗粒物等33种大气污染物的排放限值，其指标体系为最高允许排放浓度、最高允许排放速率和无组织排放监控浓度限值。大气污染物综合排放标准主要控制对象为工业生产过程中排放的工艺尾气。按照综合性排放标准与行业性排放标准“不交叉执行”的原则，除锅炉、工业炉窑、火电厂、炼焦炉、水泥厂、恶臭物质、机动车执行各自的大气污染排放标准外，其他大气污染物排放均执行本标准。 (葛大陆膝静)
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条