nh -n 氨氮
rumen nh-n 瘤胃nh＿3
nh n content 氨氮含量
nh -n excretion 氨氮排泄
nh-n wastewater nh3n废水
nh-n degradation 氨氮降解
nh -n wastewater 氨氮废水
nh -n concentration 氨氮浓度
nh -n removal rate 氨氮去除率
This paper probes into the NH 4 + N, NO 3 - N concentration dynamics on DMPP (3,4 dimethylpyrazole phosphate) in vegetable soils under fertilized condition with aerobic cultivation.
采用好气培养法研究了新型硝化抑制剂3，4-二甲基吡唑磷酸盐（DMPP）对菜园土壤养分肥力的影响。
The selective exchange process was used in the treatment of wastewater containing NH 3 N from catalyst production.
用铵离子选择交换工艺对催化剂生产过程排出的含氨氮废水进行处理。
The effect of N forms and NO-3-N/NH+4-N ratio on iron nutrition in hydroponically grown lettuce were investigated.
研究了硝态氮与氨态氮及其不同配比对水培生菜铁素营养的影响。
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