氮的
- 与 氮的 相关的网络例句 [注:此内容来源于网络,仅供参考]
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In nitrogen and phosphorus mixed pollution water, in thewater that the concentration of nitrogen is 21mg/L and the concentration of phosphorus is155mg/L, Eichharnia crassipes and Hosta ventricosa can grow normally. In the water that theconcentration of nitrogen is 210mg/L and the concentration of phosphorus is 31mg/L, thephysiological indicators of Hosta ventricosa is good but the physiological indicators of Eichhomiacrassipes is worse than the other treatment and the root of Eichharnia crassipes was rot when itwas planted in the 7th day, and on the 11th day the plants wilt symptoms, it noted that thistreatment affected the growth of Eichharnia crassipes.
在氮磷复合污染的水体中,凤眼莲和紫萼玉簪在氮浓度21mg/L,磷浓度155mg/L水体中都能够正常生长,而在氮浓度210mg/L,磷浓度31mg/L水体中,紫萼玉簪生长正常,而凤眼莲的生理指标比在其它处理中要差,并且凤眼莲在种植的第7天出现根部腐烂,11天时植株枯萎的症状,说明氮浓度210mg/L,磷浓度31mg/L复合污染在一定程度上影响植物的正常生长。
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The maximum nitrogen content in leaf and leafstalk of all three treatments appeared in late September; N values in leaf were 23.1、26.5 and 26.2 mg·g-1, and in leafstalk were 14.4、12.4 and 13.2 mg·g-1 respectively, but the contents of nitrogen in the stem of P.
其中,T1、T2和T3的叶片和叶鞘中氮含量的峰值出现在9月底,叶片氮含量的峰值分别为23.1、26.5和26.2mg·g-1,叶鞘氮含量的峰值分别为14.4、12.4和13.2mg·g-1;而茎氮含量的峰值出现在10月底,其峰值为9.5、9.1和9.0 mg·g-1。
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Fourthly, taking three groups of water quality data of Jinhe River as original data, prediction to water quality of the river was made. Compared with real monitored value, the error of predicted value of all of simulating terms, including dissolved oxygen, bio-chemical oxygen demand, chlorophyll a, organic nitrogen, ammonia nitrogen, nitrite nitrogen, nitrate nitrogen, organic phosphorus, dissolved phosphorus and temperature, were basically within error limit of 20%, which validated the validity of the model.
第四,以津河三组水质数据为原始数据,通过建立的模型对津河水质进行预测,水质变量溶解氧、BOD、叶绿素、有机氮、氨氮、亚硝酸盐氮、硝酸盐氮、有机磷、溶解性磷和温度的预测值与实际监测值均在所设定的误差范围20%之内,验证了模型的有效性。
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The rate of spatial variability of available N, available K, total N, total P, total K content and pH value in 2007 were all less than 20%, and their area rate of relative uniformity were 100%. The rate of spatial variability of available P and organic matter were large than 20%, and their area rate of relative uniformity were individually 91.34% and 95.70%, which large than 80%.
结果表明,2006年试验地中碱解氮、全氮、全磷、全钾、有机质含量和pH值的空间变异程度都小于20%,相对均匀面积比都为100%,速效磷和速效钾的空间变异程度大于20%,但相对均匀面积比分别为82.18%和94.99%,都大于80%。2007年试验地中碱解氮、速效钾、全氮、全磷、全钾含量和pH值的空间变异程度都小于20%,相对均匀面积比都为100%,速效磷和有机质的空间变异程度大于20%,但相对均匀面积比分别为91.34%和95.70%,都大于80%。
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Abnormity sampling method was adopted and there was 128 sampling points in this field.The statistical laws of soil pH,organic matter,total phosphorus,total nitrogen,alkaline hydrolyzable nitrogen,available potassium and available phosphorus were analyzed, and the results indicated that the variation coefficient of soil nutrients was between 6.3% and 356.1%,pH was 5.3%.Using the geostatistica...
以土壤的pH、有机质、全磷、全氮、碱解氮、速效钾和速效磷含量为研究对象,研究其相应的统计规律,结果表明土壤各养分属性的变异系数在6.3%~35.61%之间,pH为5.3%;采用地统计的半方差函数分析,发现有机质,全氮,碱解氮和速效钾在一定范围内存在空间相关性;采用克立格方法进行最优内插,绘制了养分含量分布图,并对其空间变异进行了初步分析。
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The chemical analysis of N, P and K in organic fertilizer is presented: sample is decomposed by sulfuric acid-hydrogen peroxide and prepared to be a solution. N can be determined by NC-2 model quick N analysis set, P by chinoline molybdic acid method and K by tetraphenylboron potassium, needless of spectral photometer and flame photometer, the method is available when the content of N, P or K is over 0.1% with desired accuracy and precision.
介绍用化学分析方法测定有机肥料氮、磷、钾的含量,即样品经硫酸-过氧化氢消化后,制备待测溶液,分取待测溶液用NC-2型快速定氮仪测定氮,用磷钼酸喹啉重量法测定磷,用四苯硼酸钾重量法测定钾,不需使用分光光度计和火焰光度计,适宜一般复混肥料厂采用,对含氮、磷、钾分别达0.1%以上的样品均可用本法测定,方法的准确度和精密度能满足生产的要求。
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Our work reported here are aiming at improving nitrogen and water use efficiency in wheat/maize, faba bean/maize, pea/maize and soybean/maize intercropping through field experiment.The main results obtained were as the following:(1) Land equivalent ratio was greater than 1.0 for faba bean (Viciafaba L.)/maize (Zea mays L.) intercropping regardless of nitrogen fertilizer application or not. Based on grain yields production, LER of pea (Pisum sativum L.)/maize intercropping was over 1.0 in spite of nitrogen fertilizer application, while LER was higher than 1.0 only when nitrogen fertilizer was applied based on biomass production. However, LER in soybean (Glycine max L.)/maize intercropping was smaller than 1.0 both nitrogen applicationa and no nitrogen application. In wheat Triticum aestivum L.
本文通过田间试验,对小麦/玉米、蚕豆/玉米、大豆/玉米和豌豆/玉米间作种植下作物对氮素和水分利用的影响进行了系统比较,获得的主要结果如下:(1)蚕豆/玉米间作的土地当量比都大于1;豌豆/玉米间作以籽粒产量为基础的LER无论施氮还是不施氮都大于1,而以生物学产量为基础的LER只有施用氮肥时才大于1;大豆/玉米间作无论施氮还是不施氮LER均小于1。
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The absorption characteristics of three kinds of wetland plants,including Iris pseudacorus,Pontederia cordata and Scirpus validus,for removing nitrogen and phosphorus from wastewater resembling secondary effluent were studied by lab and pilot tests.
结果表明:短期内,各种湿地植物污水中氮、磷的吸收速率比较稳定,但在整个生长周期内,各种植物对氮、磷的吸收速率却有较大变化,4月份,水葱对氮、磷的吸收速率最大,8月份,梭鱼草对氮、磷的吸收速率最大。
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The effects of the ratio of carbon source,nitrogen source and concentration of ethanol in the medium on the productivity of polysaccharide-peptide by Coriolus versicolor were studied during the shaking flask liquid fermentation.
通过液体发酵的摇瓶实验,考察碳源、氮源、碳氮比和乙醇浓度对云芝糖肽的产率影响,确定葡萄糖和玉米淀粉为适宜碳源,蛋白胨和黄豆饼粉为适宜氮源,合适的碳氮比为20∶1,适宜的乙醇体积分数为1.5%。
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The motive of this paper is to investigate the effect of processing parameters on the properties of silicon nitride and the coverage performance of insulator layer, and the effect of the film thickness of interface layer on the conduction current performance of thin film transistor.
本文旨在研究探索工艺参数对氮化硅薄膜的性能(如光禁带宽度、相对介电常数、折射率等)和钝化层氮化硅薄膜台阶覆盖性能的影响,以及栅界面层氮化硅薄膜厚度对薄膜晶体管导通电流性能的影响,制备性能优良的氮化硅薄膜。
- 推荐网络例句
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This one mode pays close attention to network credence foundation of the businessman very much.
这一模式非常关注商人的网络信用基础。
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Cell morphology of bacterial ghost of Pasteurella multocida was observed by scanning electron microscopy and inactivation ratio was estimated by CFU analysi.
扫描电镜观察多杀性巴氏杆菌细菌幽灵和菌落形成单位评价遗传灭活率。
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There is no differences of cell proliferation vitality between labeled and unlabeled NSCs.
双标记神经干细胞的增殖、分化活力与未标记神经干细胞相比无改变。