nitrogen supply unit 供氮设备
instrument nitrogen supply system 仪表用氮气供应系统
soil nitrogen supply 土壤供氮
Tank Nitrogen Supply 贮罐氮气供应
The analysis of apparent nitrogen balance in the year-round greenhouse tomato cultivating system showed that apparent nitrogen loss increased with nitrogen supply level.
对日光温室番茄生产系统氮素平衡的分析表明，表观氮素损失随施氮量增加而升高，在总氮素供应水平处于200-800 kg·hm-2 N之间时，表观氮素损失量与总氮素供应水平呈正相关。
参考来源 - 日光温室番茄的氮素追施调控技术及其效益评估Additional nitrogen supply significant increased needle,stem and root nitrogen concentration in larch seedling,and needle nitrogen concentration was highest and have the most change extent with the increase of nitrogen supply.
在不同的氮、磷营养水平条件下,施氮显著提高了落叶松幼苗叶、茎、根的氮浓度,其中叶氮浓度最高,且随氮供给水平的增加,变化幅度也最大。
参考来源 - 氮磷营养对落叶松幼苗生长的调控·2,447,543篇论文数据，部分数据来源于NoteExpress
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