固氮的 meaning in English
nitrogen-fixing
Examples
- Among the blue-green algae are many species of nitrogen fixation .
许多种蓝藻有固氮的能力。 - The paper reviews home and overseas research works on exhumation and use of nitrogen - fixing resource , genetics engineering of nitrogen fixation , and biochemistry of nitrogenase and chemical modeling of biological nitrogen fixation , and describe the prospect of biological nitrogen - fixing research
本文从固氮资源的发掘和利用、固氮的遗传工程以及固氮酶生物化学和化学模拟生物固氮三方面对国内外的研究进展进行了全面的阐述，并对生物固氮研究的前景进行了展望。 - Effects of diverse environmental factors on the growth rate ( od4oo ) and nitrogenase activity ( ara ) of the strain w12 hi nitrogen - free culture were investigated in our experiments . the results implied that the strain w12 could easily adapt to different cultural conditions : it could use various carbon sources ( especially glucose , sucrose , malic acid , mannitol ) , propagate quickly and fix nitrogen at a temperature range of 15 ? to 40 ? and at 25 - 35 ? for optimum , at a ph range of 4 to 8 . 5 , at a saline concentration range of 0 . 01 % to 1 . 5 % ; low nlv " concentration had little effect on its nitrogenase activity . ara could also be detected when it grow in the culture media with 5mmol / l ntv "
W12菌株对环境因子的适应性研究：无氮培养条件下，测定温度、碳源、酸碱度、渗透压对w12生长及固氮能力的影响，结果表明，在15 - 40下均能生长并表达固氮酶活性，其最适生长及固氮的温度为25 - 35 ；能利用葡萄糖、蔗糖、苹果酸、甘露醇等多种碳源生长并固氮，当培养基中同时存在蔗糖和苹果酸时，细菌生长和固氮活性最强；在偏酸和偏碱的条件下( ph4 . 5 - 8 . 5 )均能保持较强的生长势和较高的固氮酶活性，并能通过调节自身代谢平衡并适应环境的酸、碱性变化，使培养液趋于中性：能耐受较高的渗透压，培养液中卜、 5 naci浓度对其生长和固氮酶活性影响不大，当naci浓度升至2时，菌株的生长势及固氮酶活性才有所下降：低浓度的铰对其固氮酶活性影响不大，在0 - In this study , 5 rhizosphere soil samples of wheat , maize , ryegrasses and willow tree were collected from campus of china agricultural university and beijing chaoyangqu , respectively . a total of 29 isolates were selectively obtained from these rhizosphere soli samples based on their growth on nitrogen - free medium and their resistance to 100 for 10 - 15 min
本文在中国农业大学科学园区采集了小麦和玉米的根际土，从北京市朝阳区洼里分别选择不同环境采集2个黑麦草根际土壤样品和1个柳树根部的土壤样品，分别从这5个土壤样品中分离固氮的芽孢杆菌。 - Advances in mycorrhizal research on nitrogen - fixing plants were introduced . the universality of mycorrhizal formation in nitrogen fixing plants , the reciprocal promotion effect of symbiosis , and the application prospect of mycorrhizal techniques under stressed conditions were summarized and reviewed . the mechanism of enhancing nitrogen fixation of n - fixing plants by mycorrhizal fungi in symbiosis was preliminary discussed
综述了固氮植物菌根研究的概况，并对固氮植物形成菌根的普遍性、固氮植物联合共生的增效作用及逆境条件下菌根技术在固氮植物上的应用前景进行了总结和评述，初步探讨了联合共生体中菌根菌促进固氮植物结瘤固氮的机理