1) N input
氮素输入
1.
Results show that the N input was mainly through chemical fertilizer,organic manure,rainfall,irrigation,biological fixation and seeds in the system,contributing 545 kg hm-2 yr-1,68 kg hm-2 yr-1,21 kg hm-2 yr-1,15 kg hm-2 yr-1,and 5 kg hm-2 yr-1,respectively,totaling N input was 669 kg hm-2 yr-1,while the N output with harvested crops was only 311 kg hm-2 yr-1.
对华北地区冬小麦-夏玉米轮作体系农田氮素输入输出的数量特征、平衡状况进行了分析,并评估其优化潜力。
2) nitrogen fertilization
氮输入
1.
To understand the influence of nitrogen fertilization on the carbon balance in the freshwater marshes,we measured the CO_2 and CH_4 emissions as well as net ecosystem exchange(NEE) of CO_2 using the static chamber and gas chromatogram technique in situ over Deyeuxia angustifolia wetland in Sanjiang Plain.
以小叶章沼泽化草甸为对象,利用静态箱-气相色谱法,在三江平原进行野外原位试验,研究氮输入对沼泽湿地碳平衡及其各分量的影响。
3) nitrogen input
氮输入
1.
Responses of marsh wetland plant Calamagrostis angustifolia to exogenous nitrogen input;
湿地植物小叶章对外源氮输入的响应
2.
The enzyme activity of Calamagrostis angustifolia litter decomposition affected by exogenous nitrogen input in a freshwater marsh
氮输入对沼泽湿地小叶章枯落物分解过程中酶活性的影响
3.
The notable change of nitrogen input is resulted from human activity,which simultaneously caused forest decline and some environmental problems after industrial revolution.
自工业革命以来,人类活动已经显著改变了全球的氮素输入,造成了森林衰退及一系列严重的环境问题,所以森林土壤氮贮量及氮输入过程的研究已成为当前研究的热点。
4) nitrogen export
氮素输出
1.
Influence of land use on nitrogen exports in Xitiaoxi typical sub-watersheds.;
西苕溪典型小流域土地利用对氮素输出的影响
2.
of 2004 within these sub-watersheds,to analyses temporalspatial characteristics of nitrogen concentrations and the effects of land use on nitrogen export.
在2004年分3次(7月、9月、12月)监测了各个小流域出口的总氮浓度,用以表征流域氮素输出强度。
6) Nitrogen translotation
氮素传输
补充资料：计算机输入/输出控制系统(见计算机输入/输出系统)
计算机输入/输出控制系统(见计算机输入/输出系统)
computer input/output control system
iisuanii shuru/shuehu kongzhi xitong计算机输入/输出控制系统(com-puter inPut/ou中ut eontrol system)见计算机输入/输出系统。
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