The content of soil microbial biomass nitrogen(B_N) and its affecting factors were reviewed,the important roles of soil microbial biomass nitrogen in soil nitrogen cycling were described,and the relationships of soil microbial biomass nitrogen with soil mineralizable nitrogen,mineral nitrogen,organic nitrogen and fixed ammonium were emphatically discussed in this paper.
简述了土壤微生物生物量氮的含量及其影响因素,阐述了其在土壤氮素循环中的重要作用,着重讨论了其与可矿化氮、矿质氮、有机氮和固定态铵之间的关系,指出土壤微生物生物量氮与供氮因子间的关系在氮素循环研究中有非常重要的作用,可为调控土壤氮素的供应状况,减少氮素损失,提高氮肥利用率提供科学依据,并提出了需要深入研究的问题。
The content of mineralizable nitrogen (MAN), total nitrogen (TN) and organic matter (OM) at different depth of soils were analysed to study the relationships between these three indices and crop uptake of nitrogen (CUN).
在具有典型半干旱气候特征的陕西永寿选取6种不同肥力水平的田块,分层采集0～100cm土样,测定各土层可矿化氮、全氮及有机质含量,研究其与作物吸氮量之间的关系。
The factors affecting soil microbial biomass nitrogen and the relationship between soil microbial biomass nitrogen and mineralizable nitrogen are reviewed.
综述了影响土壤微生物体氮的因子,以及微生物体氮与可矿化氮之间的关系。
THE ESTIMATION OF ENDOGENOUS EXCRETION OF ROGEN FROM ANGORA RABBITS AND ITS INFLUENCE ON THE MEASUREMENT OF NITROGEN DIGESTIBILITY OF FEEDS
毛兔内源氮排出量的估计及其对饲料氮消化率测定的影响
Variance of Dry Matter Digestibility among Lines and Its Response to Nitrogen Application in Italian Ryegrass;
多花黑麦草干物质消化率的品系间差异及对追施氮肥的响应
The Effect of Urease Inhibitors on Nitrogen Metabolism and Rate of Nutrient Digestion in Goat Rumen;
脲酶抑制剂对山羊瘤胃氮代谢及营养物质消化率的影响
Effects of Soybean Trypsin Inhibitors on Nitrogen Balance and Apparent Digestibility of Feed Nutrients in Rex Rabbits
大豆胰蛋白酶抑制因子对獭兔氮平衡和养分消化率的影响
Effects of Tannin Content in Sainfoin(Onobrychis viciifolia)Hay on Digestibility of Nutrients and Utilization of Nitrogen in Sheep Diets
红豆草单宁含量对绵羊养分消化率及氮利用的影响
Measures of hydrocarbon reactivities have been obtained based on the rates of both hydrocarbon consumption and ??production.
基于烃的消耗和二氧化氮的产生两种速率，已经获得烃活动性的量度。
Effect of Small Peptide on Nitrogen Retention, Digestibilities of Nutrients and Concentrations of Glucose, Ammonia, Total Amino Acid of Portal Veinous Plasma in Goats;
小肽对山羊氮存留、营养物质的消化率以及门静脉血糖、血氨和总氨基酸浓度的影响
Effects of Glycerol on Rumen Fermentation, Urinary Excretion of Purine Derivatives, Digestibility, Energy Metabolism and Nitrogen Balance in Simmental Steer
丙三醇对牛瘤胃发酵、尿嘌呤衍生物、消化率、能量代谢及氮平衡的影响
The characteristic indexes of Daqu aroma-producing capability include ammoniacal nitrogen and the specific consumption of amylum.
氨态氮和淀粉消耗率为大?生香力的特徵指标。
dry-matter digestibility of a feed
饲料干物质表观消化率
The fall in digestibility is quite rapid.
其消化率下降是很快的。
Technical modification of denitrification enhancement in T type oxidation ditches
T型氧化沟提高脱氮效率的技术改造
Partial Nitrification of Digested Sludge Liquor with Low C/N and High-concentration Ammonia
低C/N高氨氮消化污泥脱水液部分亚硝化研究
Selection of Optimization Process of Denitrification in Piggery Wastewater Treatment by SBR
SBR处理猪场废水厌氧消化液脱氮工艺的优化
Influence of Urbanization on the Nitrogen Flow in Food Consumption System and Nitrogen Cycling in Agro-Ecosystem of China;
城镇化对我国食物消费系统氮素流动和农田氮素循环的影响
Dynamics of dry deposition velocities of atmospheric nitrogen compounds in a broadleaf forestland
阔叶林地大气氮化物干沉降速率动态变化研究
Studies on Effects of the Application Rate of Chemical Nitrogen Fertilizer on Yield and Quality and Nitrogen Fertilizer Utilization Ratio of Vegetables;
化学氮肥用量对蔬菜产量、品质及氮肥利用率影响的研究
Effects of Partial Mineral Nitrogen Substitution by Organic Fertilizer Nitrogen on the Yields of Rice Grains and Their Proper Substitution Rate
有机肥料氮替代部分化肥氮对稻谷产量的影响及替代率