氮

The results showed that the best carbon and nitrogen sources for xylanase production were lactose combined with beef extract.

结果表明，里氏木霉产两种酶的最佳碳源和氮源各异，其中木霉产木聚糖酶的最佳碳源为乳糖，氮源为牛肉膏；而产β-葡聚糖酶的最佳碳源为麸皮，氮源为硫酸铵。

On the other hand, in order to contact to practical application and combine the actual experimental condition, we can make some elementary research on the application of boron nitride which has been synthesized.

将合成的纳米氮化硼材料进行表面改性，改善纳米粉体表面的润湿性，增强了其在介质中的界面相容性，使氮化硼纳米粒子容易在有机化合物中分散，提高了氮化硼纳米粉体的应用性能。

The dormant bud of apple variety Gala was smeared with potassium nitrate at 1%, 3%, 5%, 7% and 9%, and the dormant bud of grape variety Jufeng was smeared with calcium cyanamide diluted at 2,5 and 8 times (weight ratio of calcium cyanamide to water was 1:2). The effects of potassium nitrate and calcium cyanamide with different concn. on breaking natural dormancy of fruit tree were studied.

方法用浓度为1%、3%、5%、7%和9%的硝酸钾涂抹苹果品种嘎拉的休眠芽，用浓度为2倍液（石灰氮与水的重量比为1：2，下同）5、倍液和8倍液的石灰氮涂抹葡萄品种巨峰的休眠芽，研究不同浓度的硝酸钾、石灰氮打破果树自然休眠的效果。

Both CaCN2 and urea inhibited the chlamydospore germination, mycelial growth and sporulation of the pathogen, but CaCN2 by using at the rates of 0.5 and 1.0%, had two inhibition zones for chlamydospore germination with time while urea had only one. Calcium cyanamide was also more effective on reducing mycelial growth and sporulation of the pathogen than urea did. Therefore, the suppression of pea wilt might be due to fungicidal effect of the intermediate products including hydrogen cyanamide and urea from calcium cyanamide.

由氰氮化钙（0.5及1.0%处理者）之抑制曲线在不同的时间出现两个抑制区，而尿素则仅有一个，及氰氮化钙对萎凋病菌菌丝生长及产胞的影响远较尿素为甚，显示氰氮化钙之所以能有效抑制萎凋病的主要因子，或许是来自其中间产物，包括尿素及氟酸的杀菌作用。

Camphorate, in which the corn powder was best, while the yam powder and lactic acid were comparatively poorer. The utilization of nitrogen sources by A. camphorate was diverse. The organic nitrogen sources were better than inorganic ones. The best result was achieved when (NH4)2SO4 and wheat bran was co-added, but (NH4)2CO3 could be hardly used when added solely.

樟芝对碳源利用较广，其中以玉米粉效果最好，而对山芋粉和乳糖的利用较差；樟芝对氮源的利用具有差异性，其中对有机氮源的利用较无机氮源好，以硫酸铵＋麸皮复合培养效果最佳，而对碳酸铵几乎不利用。

The research on the conditions of chlamydospore production for the liquid fermentation showed that, the better single factors were oat liquid media, 30℃, 120r/min surge culture, sucrose as carbon source,(NH_4)_2SO_4 as nitrogen source and the ratio of 20 to 1 for C/N. Under the better single factors mentioned above, the largest quantity of chlamydospore, i.e.3.05×10~7spores/ml, was obtained on the 10th day after culture.

木霉T-33菌株产生厚垣孢子的发酵条件研究表明，采用燕麦粉培养液、30℃、120r/min振荡培养、250ml三角瓶装入80ml培养液、接种5片活化2d的5mm直径的菌片，碳氮源选择蔗糖和硫酸铵，C/N为20/l，足适合T-33菌株产孢的最佳单因素条件(碳氮源实验基于Czapek培养基)；用这些最佳单因素组合(不包括碳氮源和C/N结果)培养木霉T-33绘制了产孢曲线，发现在培养第10d得到最大的厚垣孢子产量3.05×10~7个/ml。

The results of N/P ratio test show that the removal of nitrogen and phosphorus by immobilized Chlorella is influenced by N/P ratio.

氮磷比试验结果表明，固定化小球藻对氮磷的去除受氮磷比的影响。

The study is carried out that the comparison of fine root production, decomposition and distribution along with Korean pine and broad-leaved climax forest succession; the fine root contribution to the belowground C and N storage along with Korean pine and broad-leaved climax forest succession; and the comparison of belowground C and N storage among the Korean pine and broad-leaved climax forest, three dark-conifer forests, a betula ermanii forest along altitude.

研究内容包括：原始阔叶红松林及其不同演替阶段的次生林中细根的生长和周转、分解与分布的特征，阐明在不同演替阶段细根的变化；原始阔叶红松林及其不同演替阶段的次生林中细根对根系、土壤和林地地下的碳、氮贮量的影响，分析在不同演替阶段细根周转对地下碳、氮贮量的贡献；以及对不同垂直海拔高度分布的不同类型的原始森林中细根和根系生物量的变化，及细根对根系、土壤和林地地下碳、氮贮量的贡献进行了研究。

Although all vegetation is secondary in character, the mature forests can be thought as the climax monsoon EBLF partly because forest area around a Buddhist temple in the centre of the park is believed to have been protected from complete clearance.

对有机碳库(-37.71％)、氮库(-48.39％)和磷库(-35.17％)削减效应最大的退化类型为成熟常绿阔叶林退化为次生林，其余退化类型也都不同程度的导致了土壤有机碳库和氮磷养分库含量的下降，唯一特别的是，在次生林退化为灌丛时土壤氮库含量有所增加(+1.31％)，以及灌丛退化为灌草丛时土壤磷库含量有所增加(+4.56％)。

The results revealed that the denitrification optimal pH and temperature was at pH 7.5 and 30℃.

在实验结果中，最佳脱氮的酸碱度为 pH 7.5、而脱氮菌最适生长温度为30℃，在持续反应96 小时每12 小时检测一次，硝酸氮从 3500 ppm 降至240 ppm ，其脱氮率为90﹪以上。

In the negative and interrogative forms, of course, this is identical to the non-emphatic forms.

。但是，在否定句或疑问句里，这种带有"do"的方法表达的效果却没有什么强调的意思。

Go down on one's knees;kneel down

屈膝跪下。。。下跪祈祷