氮损失

结果表明，免疫应激显著降低肉仔鸡采食量（P0.05）、增加内源氮损失（P0.01），但对日粮能量及氮消化率没有显著影响（P0.05）。

Immunological stress decreased the feed intake ( P0.05 ) and increased the endogenous nitrogen loss significantly ( P0.01 ), but dietary digestibility of energy and nitrogen was not affected significantly by immunological stress ( P0.05 ) .

试验过程中产生约20%氮损失，这与氨氧化和厌氧氨氧化相互耦合产生气态含氮产物（N2、NO、N2O）有关。

About 20 % maximum N loss produced in the test process ; this was related with the production of gaseous products containing N ( N2 , NO and N2O ) due to coupling ammonia oxidation and anaerobic ammonia oxidation .

农田氮损失及其阻控对策研究

Study on Loss of Nitrogen Fertilizer from Agricultural Fields and Countermeasure

石灰性稻田土壤上化肥氮损失的研究

Investigations on nitrogen losses from fertilizers applied to flooded calcareous paddy soil

单级好氧和限氧污水处理系统中总氮损失的微生物学机理

Microbiological Mechanism of Nitrogen Loss in Aerobic or Oxygen-limited Wastewater Treatment System

猪内源氮损失的调控

Control to endogenous nitrogen losses of pigs

农作物的气态氮损失

Gaseous N Losses from Agricultural Crops

跟空白堆体相比，添加竹醋酸的堆体氮损失率降低10%。

Compared with the blank pile , N-loss of the piles with bamboo vinegar can be reduced by 10 % .

Lfsp-肥料和土壤氮损失量与作物从耕层土壤有效氮中吸收氮总量（kg.hm-2）；

Lfsp ( kg · hm-2 ), sum of lost nitrogen from fertilizer , soil nitrogen and nitrogen absorbed by crop ;

与反硝化作用相比，硝化作用对亚高山针叶林土壤氮损失的影响可能更大。

Results from this research suggest that gross nitrification is more responsible for the nitrogen loss from soils as compared with denitrification .

今后堆肥过程中的氮损失调控将向各方法的优化和集成方面发展。

The control of nitrogen loss during the composting will be developed in the pattern of optimization and integration of various methods and techniques .

在培养发酵过程中，尿素、赖氨酸、蛋氨酸和酪蛋白水解物的氨态氮损失分别占粗蛋白质的72.9%、22.8%、55.2%和70.3%。

E. urea , lysine , methionine and casein hydrolysate were 72.9 % , 22.8 % , 55.2 % and 70.3 % ( DM ), respectively .

对内环流颗粒污泥床硝化反应器的氮损失现象进行了研究，结果表明氨逃逸是氮损失的主要致因。

The nitrogen loss in internal-loop granular sludge bed nitrifying reactor was studied , and the results indicated that ammonia escape is an important factor causing nitrogen loss .

气态氮损失受温度、土壤特性、施肥类型、方式与施肥量、地下水埋藏条件等因素综合制约，NO-3N是氮淋失的主要形式。

Gaseous losses are mainly influenced by temperature , soil property , fertilizer type , the method and amount of fertilization , as well as the groundwater conditions .

同时生物质炭具有较大的孔隙度和比表面积，因此，本文将生物质炭加入猪粪中进行堆肥，探讨其对温室气体排放的影响及对堆肥过程中氮损失的影响。

As it has larger porosity and specific surface area , so we add biochar to pig manure composted , study effects of greenhouse gas emission and nitrogen losses .

根据蛋白质降解程度和总氮损失程度，通过正交试验确定三种饼肥最佳发酵条件，其中大豆饼肥降解效果最好但总氮损失偏多，而芝麻饼肥蛋白氮降解程度最低。

According to the degree of protein degradation and the level of total nitrogen loss , the best fermentation conditions for three kinds of cake had determined by means of the orthogonal test .

外源微生物处理可促进发酵前期全氮与酸解性氮损失，但发酵结束后，与不加微生物处理相比，并没有引起氮素的过多损失。

The results are as follows : 1 , The loss of total nitrogen and acid hydrolyzed nitrogen under treatments with inoculating microbes were significantly higher than that of the treatment without inoculating microbes , but the difference was not significant after the fermentation process .

复混肥配方设计采用的原料，如果不加以技术处理，常会出现物理性状变坏、吸湿性大、挥发严重、氮损失高、易结块等，给生产使用和保管造成困难。

If the materials for compound mixed fertilizer production are not treated properly , many problems will occur , such as physical property going bad , high hygroscopicity , easily volatile , higt ammonia loss , caking etc , which will bring about difficulty in production and storage .

结果表明：反刍动物专用甜菜碱对奶牛机体抗氧化指标有一定作用，同时，可降低氮的损失，添加量以5g·d-1较佳。

The results showed that Betaine have an effect on antioxidant for dairy cattle , while reducing nitrogen loss . The best amount of additives is 5 g / d.

结果表明：2%的活性炭用量、pH3、脱色温度50℃、吸附时间3h，大豆多肽脱色效果明显，肽氮的损失率为18.88%。

The result showed that high degree of discolouration could be obtained under the following conditions : activated carbon concentration 2 % , solution pH value 3 , temperature 50 ℃, absorption time 3h , and the loss rate of soybean peptide was 18.88 % .

稻田控制排水对减少氮磷损失的影响

Effect of Controlled Drainage on Loss of Nitrogen and Phosphorous from Paddy Field

氮肥在中国农业发展中的贡献和农业中氮的损失

Contribution of nitrogen fertilizer to the development of agriculture and its loss in China

湖南典型土壤类型和耕作方式的氮磷损失特征研究

Study on Nitrogen and Phosphorus Loss Character of Typical Agrotype and Cultivation in Hunan

露地栽培条件下大白菜氮肥利用率与硝态氮淋溶损失研究

Study on N use efficiency of chinese cabbage and nitrate leaching under open field cultivation

化肥用量和有机无机复混肥对浙江海涂区氮磷损失的影响

Effects of Amount of Chemical and Organic-Inorganic Compound Fertilizer on N & P Loss in Coastal Saline Region , Zhejiang Province

稻田排水是南方地区氮磷损失和面源污染的主要途径。

Surface drainage from paddy field is the major way for loss of nitrogen ( N ) and phosphorus ( P ) and widespread pollution in south region .

计算结果表明，唐山农业区灌溉施肥引起根区以下硝态氮渗漏损失可造成浅层地下水的污染。

The results indicate that the nitrate-N leakage loss under the root zone caused by fertilizer irrigation could creat the pollution of shallow groundwater in Tangshan agricultural area .

NH4+-N在渭河渗滤系统中的环境行为包括阳离子交替吸附作用、硝化作用、反硝化作用，三者对氮的损失都有一定的贡献作用，其中反硝化作用引起氮损失量较大。

The difference of mechanism and effect is great in different filtration system . ( 1 ) Environment behavior of ammonium-nitrogen in river filtration system includes cation exchange reaction , nitrification , denitrification , all of which have contribution to nitrogen loss .

EM能显著提高堆肥中有机质和氮素的保留率，减少氮的气态损失。

Contents of residual organic matter and nitrogen in the compost with EM were increased significantly and N gaseous loss was reduced .

湖南农业面源污染中氮、磷损失的影响因素研究

Studies on Influence Factors of Nitrogen and Phosphorus Loss of Agricultural Non-point Source Pollution in Hunan Province