1) methane emission
CH4排放
1.
The results were shown that water is the base of the wetlands methane emission,the seasonal variety of methane flux from Carex lasiocarpa marsh is isochronous with the air temperature,methane flux from Deyeuxia angustifolia wet meadow is control by water condition.
用密闭不透明箱-气相色谱法对三江平原典型类型湿地-毛果苔草沼泽和小叶章湿草甸CH4排放进行了观测研究,结果表明:水分条件是决定湿地CH4产生与排放的基础,在充分积水的条件下,毛果苔草沼泽CH4排放与气温的季节变化同步,小叶章湿地CH4排放受水分条件的限制;毛果苔草沼泽CH4主要产生在5 cm以下的深层,与地下5 cm地温显著相关,小叶章湿草甸CH4主要产生在土壤浅层,与气温和地表温度相关性较高;毛果苔草沼泽和小叶章湿草甸贴地气层中植物冠层附近CH4浓度相对比较高。
2.
5 × 105km2 of wetland, in addition, of all the countries with wetland in the world, only China has plateau wetland, so studying methane emission from China's wetlan.
通过对二者常年积水的沼泽湿地CH4排放进行的同步观测,表明三江平原沼泽湿地CH4排放通量平均值是若尔盖高原的4。
3.
The conversion of marsh into paddy field changed intrinsic characters of the soil, which resulted in the change in methane emission.
2 0 0 1年 5～ 10月 ,在三江平原对毛果苔草沼泽湿地和由沼泽湿地开垦后稻田的CH4排放通量进行了同步观测。
2) CH4 emission
CH4排放
1.
CH4 emission from paddy fields plays an important role in global CH4 emission,which has been given special concern since industrial revolution.
结果表明在水稻生长期CH4排放通量的季节变化峰值出现在拔节孕穗期,且只有1个典型的排放峰。
2.
The results showed that CH4 emissions of different aeration.
通过温室盆栽试验研究相同施肥条件下,不同水分管理(持续淹水,分蘖肥后提前烤田、正常烤田和推迟烤田)对水稻生长期CH4排放的影响。
3.
【Result】The peak of CH4 emission appeared a.
【结果】间歇灌溉稻田CH4排放峰值主要集中在水稻分蘖前期和中期,N2O排放峰值出现在水稻分蘖前期和成熟期。
3) CH_4 emission
CH4排放
1.
To investigate the effect of different urea incorporation amount in different soils on CH_4 emission, a pot experiment was carried in 2002.
鉴于氮肥施用对农田CH4排放的影响还有很大不确定性,室外盆栽试验于2 0 0 2年在南京农业大学实施。
2.
The results show that CH_4 emission from paddy fields varies remarkably and seasonally during the rice-growing season,and the peak value of methane emission is presented in the metaphase of rice bearing stage.
利用静态箱/气相色谱法对川中丘陵区水稻油菜轮作稻田进行水稻全生长季CH4排放观测。
4) CH 4 emission
CH4排放
1.
Seasonal average rate of CH 4 emission fromthe MF treatment ranged from0.
结果表明,无论施用秸秆与否,不同土壤间CH4排放具有很大的差异。
5) N2O and CH4 emissions
N2O和CH4排放
1.
To evaluate the effect of cropping system on N2O and CH4 emissions and to identify the key factors controlling the emissions,a field experiment was carried out in 2003 at Jiangsu Academy of Agricultural Sciences.
研究结果表明,作物类型对农田N2O和CH4排放具有显著的影响。
6) CH4 and N2O emission
CH4和N2O排放
1.
To investigate impact of environmental factors and crop- growing on CH4 and N2O emissions, a field experiment with different levels of organic matter application under conditions of normal irrigation and permanent flooding was performed at a county of Jiangning near Nanjing during 2000 rice- growing season.
5t·hm-2)条件下各环境因素(包括土壤温度、灌溉水层深度和土壤Eh)对CH4和N2O排放的影响以及水稻生长与CH4排放的关系。
2.
5t/hm2) of organic matter (wheat straw) on CH4 and N2O emissions from rice field was studied under the conditions of conventional irrigation and permanent flooding inrice-growing season.
5t/hm2)对稻田CH4和N2O排放的影响。
补充资料：“飞行车厢”ch-47
国别：美国
类型：直升机
型号：ch-47
美国陆军特种部队在选用直升机时，看上了波音公司生产的ch-47支努干”直升机。这 是一
种独具特色的直升机，它不像我们常见的那种单旋翼直升机，它有两副旋翼，分别安装在机头上
方和机尾上方，所以这种直升机又叫“纵列式双旋翼直升机”。它的机身就像一节火车的车厢，
这也是它得名飞行车厢”的缘由。
在ch-47的基础上，波音直升机公司又动了一些“内脏手术”，改进后(编号mh-47e) 的直升机电子系统有了很大提高，最主要的特点是，在驾驶舱中增设了一个由4部多功能显 示器组成的任务管理系统和一个任务辅助系统。
mh-47e可以利用副油箱和空中加油设备进行远距离飞行或快速越海飞行。改进后的mh- 47e除装有两挺12.7毫米机枪外，还可以携挂空对空导弹。它的旋翼可以折叠，并安装有 旋翼刹车装置。机舱外安装了悬吊回收装置。它的最大载重为6512千克，最大平飞速度 297千米/小时，实用升限2900米。目前，美国陆军特种部队已装备了50架mh-47e。
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