推广等高固氮植物篱技术。
人类活动，如燃料燃烧、氮肥生产、固氮植物的培育和畜牧业的集约经营等是引起全球活性氮增加的主要原因。
Human activities such as fossil fuel combustion, nitrogen fertilizer production and cultivation of nitrogen fixing crops are the main sources of reactive n.
等这块泥土逐渐成为一块狭窄的小土地以后，就可以用来种植耐旱的沙漠植物——如金合欢树，它能在土壤中固氮。
Into them farmers plant tough desert trees — like the faidherbia albida, a type of acacia — that fix nitrogen into the soil.
一些浮游植物可以通过固氮在硝酸盐含量较低的地区生长。
Some phytoplankton can fix nitrogen and can grow in areas where nitrate concentrations are low.
氮素是植物必要的营养元素之一，其主要来源有：生物固氮作用、降雨和灌溉水以及人工施肥。
Nitrogen for plant nutrition is mainly obtained from three sources: nitrogen-fixing plant, rain water and manure.
放线菌根瘤植物是自然界中一类重要的固氮资源，作为先锋树种和伴生树种在造林中有重要的应用价值。
Actinorhizal Plants are a kind of important natural nitrogen-fixing resources, and they have high value in reforestation as pioneer and accompanying species.
举例来说，有几篇新闻报道过固氮作用——这是使植物锁定自身的氮气，从而减少对化肥需求的过程？
For example, how many news articles have been written about nitrogen-fixation — the process by which plants can be made to "fix" their own nitrogen, thus reducing the need for fertilizer?
供试菌随寄主植物的改变，侵染能力及所建立的共生系统固氮活性有所降低。
If the original host plant was replaced by others, both these Frankia 'infective ability and nitrogenase activity in new symbiotic system were lower.
生物固氮为全球的植物提供75%的氮素，是生命科学中的重大课题。
Biological nitrogen fixation (BNF), which provides all the plants on the globe with 75% of fixed nitrogen, is one of the important projects in life science.
以油茶、杉木、杨树为研究对象，探讨木本植物根际联合固氮体系。
Tea-oil tree~. Chinese fir and poplar wcre tested to determine whether nitrogen fixation occurred in these woody plants.
环境因子的限制一直是豆科植物-根瘤菌共生固氮体系没有在农业生产中充分发挥作用的重要原因之一。
Environmental factors are always one of the major reasons why the symbiotic nitrogen-fixing system of rhizobia and legumes cannot come into full play in agricultural production.
虽然在地球表面每英亩空气柱中有34,500吨气态氮，但是如果这些气态氮不被固氮菌和藻类固定，是不能被植物利用的。
Although there is 34,500 tons of gaseous nitrogen in the air column above each acre of the earth's surface, this cannot be used by plants until it has been fixed by nitrogen-fixing bacteria and algae.
近年来，蓝藻在渔业生产、生物固氮、环境保护和监测以及植物分类系统的研究中，表现出愈来愈重要的作用。
Recently, blue algae become more and more important in fishery, biological azotification, environmental protection and the research of classifying system.
根瘤内的固氮菌将游离氮转化为硝酸盐，被宿主植物在发育中利用。
Within the nodules the bacteria convert free nitrogen to nitrates, which the host plant USES for its development.
豆科植物的根瘤固氮占生物固氮总量的40%。
Nitrogen fixed by legume root nodules accounts for 40% of total biological nitrogen fixation.
豆科植物由于其高的粗蛋白含量，良好的适口性，较高的生产力及经济有效的固氮价值越来越受到人们的重视。
Leguminous plant has been thinking highly because its high protein content, good palatability, higher productivity, economic and high-performance nitrogen fixation is attracted increasing attention.
共生的固氮菌侵袭宿主植物的根毛，并在此繁殖和促进根瘤的形成、植物细胞和亲密共生细菌的扩大。
Symbiotic nitrogen-fixing bacteria invade the root hairs of host plants, where they multiply and stimulate the formation of root nodules, enlargements of plant cells and bacteria in close association.
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。
Symbiotic nitrogen fixation of legumes with azotobacteria was a hot topic of scientific research, but less focus on alpine meadow community.
其中研究的较早的生物固氮菌是与豆科植物共生固氮的根瘤菌。
Early study object of the biological nitrogen fixation bacterium is the Rhizobium which related to the nitrogen fixation of the Leguminosae.
氨基酸的生产过程与植物固氮有关。
Seperation of Amino Nitrogen and Fruit Acid (malic acid) in Apple Juice;
氨基酸的生产过程与植物固氮有关。
Seperation of Amino Nitrogen and Fruit Acid (malic acid) in Apple Juice;
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