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词语固氮拆分为汉字：
固字的拼音、笔画、偏旁部首、笔顺、繁体字，固字字源来历，固字演变
结实，牢靠：坚～。稳～。巩～。凝～。加～。坚定，不变动：～执。～定。～本。本，原来：～有。～步自封（亦作“故步自封”）。鄙陋（见识浅少）。姓。……
氮字的拼音、笔画、偏旁部首、笔顺、繁体字，氮字字源来历，氮字演变
一种气体元素，无色、无臭、无味，化学性质不活泼。是植物营养的重要成分之一：～肥。……
汉语拼音：gù dàn
These strains were used for further study for influence of nitrogen levels on their nodulation and nitrogen fixation efficiency.
研究了接种根瘤菌时，氮肥水平对大豆结瘤固氮和产量影响的小区试验。Rhizobia are able to induce the organogenesis of root nodules on leguminous plants and reduce atmospheric nitrogen into ammonia.
根瘤菌与豆科植物共生固氮而在农业和生态环境中具有重要作用。The soil nitrogen status is a function of the processes of nitrogen fixation, microbial decomposition, nitrification and denitrification.
土壤氮状况是一个固氮、微生物分解、硝酸化和脱氮过程的作用。However, bacteria fix the gas only when their population is high enough to trigger the quorum-sensing machinery.
然而，只有在细菌（根瘤菌）达到一定数量时引发群体感应机制才能进行固氮。Symbiotic nitrogen fixation of legumes with azotobacteria was a hot topic of scientific research, but less focus on alpine meadow community.
豆科植物的共生固氮作用一直是科学研究的热点问题，但在高寒草甸上研究的比较少。A preliminary study of economic characters of mulberry planted within contour hedgerows of nitrogen fixing plants.
固氮植物篱梯埂套种桑树效益初探。Scientists were working with a microbe called Azotobacter vinelandii, which is found around the roots of various food plants.
科学家利用的微生物名叫棕色固氮菌（Azotobactervinelandii），它们存在于各种粮食作物的根系。Some reports indicate reduction of legume BNF by mineral N is dependent on host species and form of N available.
一些报告还指出，通过矿质氮引起的豆类作物生物固氮的减少与寄主品种和有效氮的形态有关。As a critical tool, BNF models play irreplaceable roles in predicting nitrogen fixation of soybean quantitatively.
生物固氮模型作为一种重要工具，在定量预测大豆生物固氮速率方面具有不可替代的作用。