氮的

In this paper, as a case of Karamay, we have studied on space-time changement of soil quality in oasis of arid area. We measured quality for different land use types and years in same type by combinativing field sampling for Karamay in Xinjiang and analysis in laboratory, which is directed by former theory of soil quality. Then we did integrated evaluation of soil quality for different land use types, and had drew some conclusions as followed: In four land use types, the soil bulk density of layers(0～15cm) for farmland and tree land is bigger than the other land use types.The organic matter of every layer in manpower Tamarix Bulrush land is bigger; organic matter of Tamarix Bulrush land release efficiency nitrogen which result ration of C/N is higher; total nitrogen of all layers in farmland variety great as being effected by mass use of nitrogen in agriculture; deadwood and defoliation of tree、shrub and bulrush pooled in 5cm layer to result that quick nitrogen is the biggest among all layers. The total salt of nature shrub tree land for every layer being bigger than farmland explain that nature shrub thee land strongly stand salt and farmland for basification in this area; that the nutrient of face layer is bigger than the ground layer may be explained by that vegetation gather nutrient to be stored in deadwood and defoliation.

本文对以克拉玛依为例，对干旱区绿洲土壤质量的时间空间变化进行研究，在有关土壤质量的研究理论指导下，通过田间调查取样和室内分析相结合的方法，对新疆克拉玛依市农业开发区的不同土地利用方式及同一土地利用方式下不同利用年限土样土壤理化性质进行测定，从而对新垦绿洲不同土地利用类型土壤质量进行综合评价，结果如下：四种土地利用方式中，农地、乔木林地表层(0-15cm)土壤容重较大；各土层人工柽柳芦苇地的土壤有机质含量均较大；柽柳芦苇地的有机质在矿化过程中所释放出有效氮，导致柽柳芦苇地的C/N比例较高；受到农业耕作使用大量氮肥的影响，农地各土层全氮含量变异较明显；乔木、灌木及芦苇的枯枝落叶主要集中在5cm范围之内，导致几种土地利用方式类型下该层土壤速效氮最大；天然灌木林地的土壤总盐在各层均较大，其次是农地，说明天然灌木林地的高耐盐能力，以及该区农业生产用地的土壤盐碱化程度较重。

This paper indicates that applying Phosphorus fertilizer quantity was remarkable positively interrelated with the soil content of quick-acting P.in the soils of white serosity rice.

减少磷肥施用量水稻植株体内的全磷和全氮含量依次下降，全钾则依次逐增；提高磷肥施用量可使水稻植株体内全磷含量递减，全氮递增。

The research results indicated that the automatic Kjeldahl apparatus method was an accurate and reliable method for determination of ammoniacal nitrogen in silage.

研究结果证明，自动凯氏定氮仪法是一种准确可靠的青贮饲料中氨态氮检测方法。

The results indicated that nitrate-N accumulation increased significantly in 0~400 soil profile with N rates increasing.

结果表明，0~400 cm硝态氮累积量随着施氮量的增加而显著增加。

Determination of nitrite nitrogen and nitrate nitrogen and the sum of both by flow analysis and spectrometric detection.

用流量分析法和光谱检出法测定亚硝酸氮和硝酸氮及两者的总含量CFA和

Objective To study the change of nitric oxide, nitric oxide synthetase, malondialdehyde and superoxide dismutase level in cerebrospinal fluid of children with viral encephalitis.

目的 探讨病毒性脑炎患儿脑脊液中一氧化氮、一氧化氮合酶、丙二醛和超氧化物歧化酶的变化特点。

Increased topdressing of nitrogen fertilizer, especially at the booting stage, had significant effect on the development and structures of amyloplasts and protein bodies.

通过盆栽试验研究了相同施氮量下不同施氮时期对扬稻6号颖果发育及稻米品质的影响。

However, the conditions of solid state phase transformation of BN nanoparticies are still rather harsh.

尽管如此，以六方氮化硼纳米粉为原料制备立方氮化硼时，仍需要使用很高的温度和压力。

Melamine, a triazine heterocyclic organic compounds, it is important to ring nitrogen organic chemical raw materials.

三聚氰胺（英文名Melamine），是一种三嗪类含氮杂环有机化合物，重要的氮杂环有机化工原料。

In this paper, varied factors which influenced the synthesis of epoxypropyl trimethyl ammonium chloride by the reaction of epichlorlhydrin with trimethylamine were studied.

研究了由环氧氮丙烷与三甲胺反应合成环氧丙基三甲基氮化铵沥青乳化剂中间体的各种影响因素。

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。