固氮

From the points of lignin separation and utilization, this paper dealt with the problems of environment control and utilization of reproducible resource and tried to solve the utilization of lignin and pollution of pulp waste water by means of reducing the cost of lignin separation and making wide usage, marketable, valuable ammonified lignin slow-release fertilizer and lignin biological fertilizer.

本论文研究针对当前环境保护和可再生资源利用领域的热点问题，从造纸废液木质素分离和木质素利用这两个关键问题入手，以降低木质素分离成本和木质素资源化利用为手段，研制用途广、需求大、附加值高的木质素缓释肥和生物肥料，进而探讨生物固氮的工程问题，试图达到利用木质素和治理造纸废水的双重目的。

Often there are poor or no responses to Azospirillum inocula.

也经常有关于固氮螺菌接种剂效果不好或没有效果的报道。

Roger and co-authors （1992） compiled data from more than 100 inoculation trials （ Table 5）, that indicate that on average, Azospirillum inocula have not been beneficial to rice crop yield.

Roger 和他的合作者（1992）整理了100多个接种试验的数据，认为固氮螺菌接种剂在总体上对水稻产量没有作用。

Roger and co-authors （1993） suggest that in some instances inoculation may be useful, particularly since the inocula produced with high levels of P may have an advantage over P-limited indigenous strains; however, they suggest management practices that enhance the proliferation of native cyanobacteria to increase the N-fixing potential of these organisms.

Roger 和他的合作者们（1993）认为在某些时候接种剂是有用的，特别是高磷条件下培养的菌种对于低磷土著品系来说有一定的优势；但他们建议采用增强固有兰细菌生长繁殖的管理措施以提高这些微生物的固氮能力。

Furthermore, green manures have important effects on ecological environment, as well as energy and cost saving, carbon sequestration and emission reduction.

绿肥的主要作用包括提供养分、合理用地养地、提供饲草等传统意义上的作用，还有改善生态环境的重要作用，更有固氮吸碳和节能减耗作用。

Research areas include biological nitrogen fixation in sustainable production, nutritional value of clover and grass, plant pathogens and overwintering problems, feeding hygiene etc.

研究领域包括可持续生产的生物固氮作用、苜蓿和草的营养价值、植物病原体和越冬问题以及饲养卫生学等。

This effect of mineral N assumes there is adequate numbers of effective rhizobia available to the crop to maximize BNF.

矿质氮的这种效果是假定有大量的有效根瘤菌可使作物的生物固氮达到最大。

The symbiosis formed by rhizobia and legume host plays an important role in agriculture.

根瘤菌与豆科植物形成的共生固氮体系在农业生产中具有重要作用。

Laboratory cultures of the rhizobia can fix ??only under special cultural conditions.

实验室培养的根瘤菌只有在特殊培养条件下才能固氮。

To ensure N available from BNF does not limit legume yield, many farmers inoculate their crops with rhizobia.

为确保来自生物固氮的有效氮不限制豆科作物的产量，许多农民用根瘤菌接种他们的作物。

Do you know, i need you to come back

你知道吗，我需要你回来

Yang yinshu、Wang xiangsheng、Li decang,The first discovery of haemaphysalis conicinna.

1〕 杨银书，王祥生，李德昌。安徽省首次发现嗜群血蜱。