查询词典 nitrifying bacteria

With the increase of continuous cropping year, ammonifying bacteria, azotobacter and cellulolytic bacteria showed the tread of first increases and then decreases and reached the biggest value at continuous cropping for 5 and 3 yr, while the nitrifying bacteria quantity was decreased sharply with the increase of continuous cropping year.

随连作年限的增加，氨化细菌、固氮菌和纤维素分解菌数量呈现先增加后降低的趋势，分别在连作5、3和3年达到最大值，而硝化细菌数量随连作年限的增加急剧下降。

The invention is to carry out heterotrophic nitrifying phenomenon from the biology angle by screening heterotrophic nitrifying bacteria and the technology is the condition precedent to carry out short-range self-synchronous nitration and denitrification.

本发明的目的是采用筛选异养硝化菌的方法，从生物学角度实现异养硝化现象，该技术是实现短程同步硝化反硝化的先决条件。

After years' effort, a new aerobic denitrifier that can deoxidize NO 3 - to N 2 and N 2 O has been isolated from ocean environment. Compound bacterial production is made up of aerobic denitrifying bacteria, nitrifying bacteria and organic compound degrading bacteria.

本项目将好氧还硝化菌、硝化细菌和有机质高效降解菌制成复合微生物制剂，通过多种微生物共同作用，在好氧的条件下能同时进行有机质降解、硝化作用和反硝化作用，可有效降低水中的三氮（ NH 4 +、 NO 2 -、 NO 3 -）。

The mount of germ and fungus quantity in soil are remarkably increased for the continuous cropping about 5 years, puts the trichobacteria quantity always change tendency to reduce;The edaphon total quantity, the bacterium quantity change reduces generally above the continuous cropping 5 years and below 5 years (including 5 years) the change are not obvious;In the nitrogen physiology group by ammoniates the bacterium primarily and the quantity changes are not very big;The nitrifying bacteria quantity is lower than the comparison (non- continuous cropping), the quantity of denitrifying bacteria is opposite;The alkalinity phosphatase, the urease, invertin activeness have a closed relations with the continuous cropping when it will increase less than 5 years or decrease in more than 5 years. The relation between catalase activeness and the continuous cropping is not very big. The reduction of the invertin activeness, the alkalinity phosphatase, urease activeness have slightly elevates, catalase activeness have no the regular changes.

表现为连作条件下土壤真菌数量显著增大，放线菌数量总的变化趋势降低；土壤微生物总量、细菌数量变化在连作5年以上普遍降低，5年以下(包括5年)则变化差异不明显；氮素生理群中以氨化细菌为主，但数量变化不大；硝化细菌数量低于对照组，反硝化细菌数量则相反：多酚氧化酶、转化酶活性在5年之前逐渐上升，5年之后逐渐下降，，脲酶活性随着连作年限增加持续上升，过氧化氢酶活性、碱性磷酸酶活性变化无规律。

The number of heterotrophic bacteria and nitrifying bacteria increased with the time of the hydraulic retention time, contrary to the nitrobacter.

根际细菌和硝化细菌数量随着水力停留时间增加而增加，而根际反硝化细菌数量则减少。

Drought stress changed the correlation of NH4+-N and NO3——N with protease,urease activity,ammonifying bacteria and nitrifying bacteria.

干旱胁迫改变了玉米根际NH4+-N和NO3--N与蛋白酶、脲酶、氨化细菌和硝化细菌的相关性。

Five different selective culture medium were used for sewage microorganisms directional isolated cultivate, advantage compound bacteria of photosynthetic bacteria, ammonifying bacteria, nitrifying bacteria, denitrifying bacteria and phosphate solubilizing bacteria could be gained through enrichment cultivate, then compounded them and used in test wastewater static treatment.

采用5种选择性培养基对水样中的微生物进行定向分离，通过富集培养，可以得到光合细菌、氨化菌、硝化菌、反硝化菌和磷细菌的优势菌群，进行复合后，再对试验污水进行静态处理。

Ammonifying rate, nitrosifying rate,nitrifying rate and denitrifying rate were determined by measurement of conversion efficiency and accumulating rate of nitrogenous matter by ammonifying bacteria, nitrobacteria, nitrifying bacteria and denitrifying bacteria in the surface 0-1.5 cm of pond sediment from the intensive fish culture ponds.

通过对精养鱼池表层淤泥中氨化细菌、亚硝化细菌、硝化细菌和反硝化细菌对含氮物质转化率的测定，定量了解了上述细菌的氨化率、亚硝化率、硝化率和反硝化率。

Drought stress weakened the rhizosphere effect of ammonifying bacteria.Under drought stress,rhizospheric ammonifying bacterium amount of Baidan31 was very significantly different at seedling and jointing,and significantly different at tasseling-anthesis from that of control.Rhizospheric nitrifying bacteria tended to increase under drought stress.

干旱胁迫减弱了玉米氨化细菌的根际效应，与对照根际氨化细菌数量相比，白单31在苗期和拔节期根际氨化细菌数量受干旱胁迫的影响达极显著水平，在抽雄～开花期达显著水平；根际硝化细菌数量在干旱胁迫下有所增加。

This product is composed of high-effect compound bacillus, photosynthetic bacteria, nitrifying bacteria, denitrifying bacteria, sulfurizing bacteria etc.

本品由高效复合芽孢杆菌、光合菌、硝化菌、反硝化菌、硫化菌等有益菌群组成。

The medicinal plant resources of Gentianaceae in Sichuan Province.

四川省龙胆科药用植物资源。

"Some fortuneteller," scoffed the man, I'm the father of THREE children.

" "一些算命"，嘲笑他，"我的父亲有三个孩子。