1) soil N_2O
土壤N2O
2) N2O emission from soil
土壤N2O排放
1.
A laboratory soil incubation experiment, was conducted using soil from a wheat field in Shaanxi Province,to study, the influence of wheat roots soil moisture and temperature on N2O emission from soil.
以冬小麦田耕作层原状土为研究对象,采用了室内培养实验的方法,观测了小麦生长期不同阶段根系对土壤N2O排放的影响,及对土壤N2O排放的水、热效应的影响。
2.
The N2O emission from soil was measured during the growth of soybean and maize in a pot experiment.
测定了盆栽试验条件下大豆和玉米生长期间的土壤N2O排放。
3) Soil N2O flux
土壤N2O通量
1.
Soil N2O flux was measured for a whole year in winter wheat-summer maize rotation system in the North China Plain to determine its sources and changes in the soil,by using close chamber method.
采用静态箱/气相色谱法对华北平原冬小麦/夏玉米轮作田土壤N2O通量进行周年观测,研究轮作田土壤N2O源的大小及其变化规律,分析土壤温度、水分、有效氮含量对土壤N2O通量的影响。
4) soil N2O discharge flux
土壤N2O排放通量
5) accumulated amounts of soil N 2O emission
土壤N2O排放累积量
6) Nitrous oxide
N2O
1.
In the study, a train of thoughts was put forward with the purpose of achieving the N_2O production decrement control by using DNA probe and PCR technology for quantitative analysis on nitrous oxide reductase in biological denitrification.
N2O是一种重要的温室气体,针对污水处理生物脱氮过程中N2O的产生量、产生机理、影响因素及减量化控制等进行了综述。
2.
Nitrous oxide in atmosphere has been increasing continuously due to human activity and it will influence the environment severely, so study on the emission of nitrous oxide is more and more important.
N2O不仅是一种重要的温室气体,而且还可以破坏臭氧层。
3.
Flux of nitrous oxide and methane were measured in the lower reaches of Liaohe Plain by using static chamber-gas chromatographic techniques in thawing period.
应用静态箱/气相色谱法对下辽河平原典型农田(大豆地、玉米地、水稻田)土壤融化期N2O和CH4排放通量进行了研究。
补充资料：γ射线土壤湿度计
γ射线土壤湿度计
γ-ray soil moisture meter
7射线土壤湿度计(了ray 5011 moisturemeter)应用了射线通过土壤及所含水分之后强度减弱的原理以测定土壤含水量的仪器。土壤中的固体颗粒和水分都能吸收了射线而使射线强度减弱。在土壤固体部分不变的情况下，y射线穿过土壤后，其强度变化主要取决于土壤含水量的变化。在实际工作中，将探测器埋入被测点后，测得的7射线强度为I。，并立即用烘干法取样测定该点的上壤含水量作为初始值W。。经过时间t后，土壤水分发生了变化，其含水量用W，表示，所测出的了射线强度为I‘，则土壤水分的变化量为△W，△W可用下式求出△W(毫米)=Inlo一Inl‘ M式中M为水的吸收系数，故环飞一W。+△W。 这类仪器可测定较大范围内的土壤含水量，误差一般为1%一2%。测定结果不受土壤紧密度等物理结构的影响，但仪器较复杂，使用时需有防护设备，多用于某些研究工作。另一方面，土壤中常有放射性物质存在，也会影响测定结果。(杨正明)
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