p2o5

Paying attention to rational use of N , P2O5 is a good way to improve water use efficiency and soil water use ratio .

注重肥料配合施用，适当增施有机肥、N肥和P2O5能明显改善水分利用效率和底墒利用率。

The results showed that the decomposition rate increased as P2O5 concentration in phosphoric acid increased and the temperature moved up .

研究结果表明：反应速率常数随温度的升高和磷酸中P2O5质量分数的增加而增加。

The total nutrient content ( i.e. N + P2O5 + K2O ) could meet the standard of organic fertilizer .

各处理堆肥结束后的总养分含量（N+P2O5+K2O）均能满足有机肥料标准。

The main factors affecting the removal results ( P2O5 concentration in solution , temperature , dose of precipitant , time ) and filter conditions are presented .

介绍影响脱镁率的主要因素（沉淀系统P2O5浓度、温度、沉淀剂的用量、沉淀时间）及沉淀浊相的过滤条件。

The modification of synthesizing processes of phosphates with P2O5 and testing method of the content of monoester and diester were introduced briefly .

简要介绍了使用五氧化二磷作为磷酸化试剂合成磷酸酯的工艺过程改进，以及磷酸单双酯含量检测的常用方法。

The results shows that the proper contents of Al2O3 , P2O5 , CaO is good for obtaining ideal phase structure and effects the properties of the final products greatly .

结果表明，适当含量的Al2O3，P2O5，CaO的引入，有助于获得理想的分相结构，对最终产品的性能将起到重要作用。

Absorption efficiency of exhaust gas of sulphuric acid equipment could maintain 80 % within 653 min and P2O5 % mass concentration attained 1.2 % in the pulp .

工厂现场试验结果表明，采用磷矿浆吸收净化硫酸尾气，SO2脱除率≥80%的反应时间可达到653min，矿浆过滤后澄清液中的P2O5质量百分含量可达1.20%。

The main results were as follows : soil Olsen-P concentration significantly increased with long-term high P fertilization [ P2O5 135 kg / ( ha · a ) ] .

结果表明，长期施用磷肥[P2O5135kg/（hm2.a）]导致土壤有效磷含量逐年提高；

The mathematical model of planting density , applied amount of N , P2O5 and K2O for plot yield of maize variety Kenyu No.6 was established .

通过四因素二次旋转回归正交试验，建立了垦玉6号玉米品种籽粒产量与种植密度、施氮量、施磷量、施钾量的数学模型。

This paper briefly recounts that a new leather fatliquoring agent was synthesized by reacting castor oil and modified castor oil acid with P2O5 at65 ~ 75 ℃ .

以蓖麻油和改性后的蓖麻油醇酸为主要原料，与磷酸化试剂五氧化二磷在65～75℃进行酯化反应，合成了一种具有较好加脂作用的磷酸酯加脂剂。

As the major economical and technical indexes in WPA production , sulfuric acid consumption is reduced alone with the decrease in the loss of the water soluble P2O5 in the WPA filtering system .

硫酸消耗是磷酸生产的主要经济技术指标，降低磷酸过滤系统水溶磷的损失是降低硫酸消耗最有效的途径。

, Ltd. The pilot experiments have shown that the purification cost for each ton products ( P2O5 ) which meet industrial standards on furnace-process phosphoric acid is about 250 Yuan .

的工业化中试装置，中间实验证明，获得的净化磷酸能达到工业级热法磷酸的标准，每吨产品P刃。

Modification of phosphorous gypsum with two inorganic non-metallic materials was conducted through the formation of hard-to-dissolve calcium salt from the P2O5 、 F - 、 SO42 - .

用两种无机非金属材料对磷石膏进行改质，使磷石膏中P2O5、F-、SO42-生成难溶于水的钙盐。

31P nuclei are used as probes in the NMR studies of xLi2O · P2O5 · yCdO glass samples with different molar ratio ( x , y ) .

以~（31）P核为探针对具有不同摩尔比（x，y）的xLi2O·P2O5·yCdO玻璃样品进行了核磁共振研究。

The technological indexes were reached of > 95 % overall desul-phurization efficiency , > 90 % phosphate extraction and > 35 % total nutrient ( N + P2O5 ) content in the product fertilizer .

目前，总体技术达到：总脱硫效率≥95%，磷矿石的萃取率>90%，肥料总养分含量（N+P2O5）≥35%。

The results show that both B2O3 and P2O5 can facilitate the formation of phase-separation in glazes , and very low surface tension of the phase-separation droplets facilitates the growth of droplets .

研究表明：B2O3和P2O5能促进分相形成，并且由于分相具有很小的表面张力而使其液滴易于长大。

It was showed that crops in intercropping system and had the highest yield under the treatment of middle irrigation ( 1050m3 / hm2 ) and high phosphorus ( 150 kg P2O5 / hm2 ) .

同时，在所有的处理中，中灌（1050m3/hm2）和高磷（纯P2O5150kg/hm2）处理的经济产量最高。

Through repeated research and innovation , Honghe Phosphate Fertilizer Factory has stabilized the daily production volume of the 60 kt / a HDH process phosphoric acid plant at 5 000-5 500 tons ( P2O5 ) . process indexes basically meeting design requirements .

红河磷肥厂反复摸索、整改，使60kt/a半水&二水物法磷酸装置的月产量稳定在5000～5500t（P2O5计），各项工艺指标已基本达到设计要求。

Urea phosphate is the product of addition reaction between phosphoric acid and urea , and usually obtained from reaction of phosphoric acid [ w ( P2O5 ) > 40 % ] with urea . As a fodder additive and a high-concentration compound fertilizer .

磷酸脲是磷酸与尿素的加合产物，通常多用ω（P2O5）>40%的磷酸与尿素反应制得，既是饲料添加剂，又是高浓度复肥，用途广。

The result showed that invertase activity , active organic carbon , available N , available P ( P2O5 ), CEC , physical clay ( < 0.01 mm ), heavy fraction carbon and undisturbed soil complex quantity were as the indexes to indicate the soil matrix of plough layer .

研究表明：蔗糖酶、易氧化碳、速效氮、速效磷、阳离子代换量、＜0.01mm的物理性粘粒、重组碳、原上复合量8个指标是反映耕层土壤肥力的体质指标；

Through the potassium fertilizer test on eggplant , the result demonstrates : when the optimum fertilizer ratio of N ∶ P2O5 ∶ K2O is 450 ∶ 300 ∶ 300kg / ha , the eggplant 's output is up to 93015kg / ha ;

通过在茄子上的钾肥试验，结果表明茄子最佳氮磷钾配比为4503∶003∶00kg/ha，茄子产量可达93015kg/ha。

Loratadine was synthesized from 2-cyano-3-methylpyridine via Ritter reaction , alkylation and cyanidation to give 2-cyano-3 - [ 2 - ( 3-chlorophenyl ) ethyl ] piperidine , which subjected to cyclization in presence of PPA / P2O5 and then coupling with N-ethoxycarbonyl-4-piperidone . The overall yield was 39 % .

2-氰基-3-甲基吡啶经Ritter反应、烷基化、氰化得到2-氰基-3-[2-（3-氯苯基）乙基]吡啶，在PPA/P2O5作用下闭环后和N-乙氧羰基-4-哌啶酮偶合制得氯雷他定，总收率39%。