• Micro - Kjeldahl method was developed to determine total nitrogen.

    含量测定采用凯氏定氮

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  • Experimental study on the nitrogen of total nitrogen content of soybean.

    实验研究大豆含量影响。

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  • Regress the load of nitrate, ammonium and total nitrogen by MQ equation.

    硝氮氨氮负荷进行MQ回归,提炼回归方程

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  • Organic carbon and total nitrogen in bed load had enrichment phenomenon.

    推移质中有机均有富集现象

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  • The medium grazing favored a increase of content of total nitrogen in root.

    放牧区根系平均含量均高于对照区,中度放牧有利于根系氮贮量的提高

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  • The variation coefficient of total nitrogen(17%) was the smallest and more stable.

    变异系数(17%)最小比较稳定

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  • Soil total nitrogen contents in 77.3 % production units were high, 22.7 % units low.

    含量处于中高水平的生产单位占77.3%,处于水平的生产单位占22.7%;

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  • And the content of total nitrogen in the river is higher than that in the brook every month.

    溪水河水时间变化趋势一致,且各月河水的总氮含量高于溪水。

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  • The methods for determining total nitrogen and basic nitrides content in diesel oil are described.

    介绍了测定柴油碱性含量的各种方法

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  • The contents of total nitrogen had a significant positive relationship with the soil organic carbon.

    人工林土壤土壤有机含量之间呈显著的线性正相关

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  • Total nitrogen and total phosphorus in tobacco field soil were determined with a Skalar flow analyzer.

    利用流动分析仪测定了烟田土壤中的

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  • Maize straw returning to the field can increase the soil total nitrogen and inorganic nitrogen content.

    秸秆还田增加土壤无机含量

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  • Contrast to soil available nitrogen, soil total nitrogen was not influenced by the environmental factors.

    而优势物种和功能群组成对土壤影响作用相对较弱。

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  • The soil organic carbon and total nitrogen contents obviously decreased and shown an upper-accumulated pattern.

    土壤有机质含量也自上而下显著下降表现出明显的表层聚集现象。

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  • Soil organic matter, total nitrogen, total phosphorus, available nitrogen had middle spatial correlation patterns.

    土壤有机质、全、速效氮具有中等空间相关性

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  • Total nitrogen contents of surface soil in three forest types changed with seasons distinctly, and overall extents were not big.

    三个林型表层土壤含量季节变化规律明显不同,总体变化幅度不大

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  • Topdressing nitrogen treatment had no obvious effect to total nitrogen in soil, but it had a stronger effect to alkalined-nitrogen.

    处理土壤没有明显影响对土壤大麦碱解氮的影响比较大。

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  • The results indicate the maximal relative error between simulation values and observation values of total nitrogen concentration is 11.67%.

    结果表明,地下水含量模拟实测值最大相对误差11.67%。

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  • Two alternative methods measuring total nitrogen of aquaculture pond soils, named total Ammonia method and Nitrate method, were established.

    本实验创立了水产养殖池塘底泥含量简易测定分别称为硝酸盐法。

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  • Drought increased, while waterlogging reduced the contents of total nitrogen and free amino acid in stem and sheath, and that of protein in grain.

    干旱处理提高了游离氨基酸含量以及籽粒蛋白质含量,渍水处理则使其降低

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  • Total nitrogen and organic matter contents had the same distributed patterns, which were higher in the north, but lower in the middle and south part.

    有机质含量分布格局基本一致具有北部中部南部的分布特征。

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  • The content of total nitrogen and total phosphorus in every forest runoff is higher than rainfall, and that of Coniferous mixed forest is the highest.

    林分地表径流、总含量高于大气降水樟落混交林的总磷、总氮含量最高。

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  • The result shows that the content of soil organic matter, total nitrogen and different forms nitrogen decreased firstly, then increased by time pasted.

    结果表明区域土壤有机质形态氮素含量呈现后升的趋势。

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  • Meantime it keeps the coefficient of homogeneity of red clover far below the 1.0 level but causes the total nitrogen content of soil to decrease by 0.085%.

    中度放牧并未使草地牧草产量和三叶重要值降低,同时使草地红三叶均质度系数保持在低于1.0水平以下,使土壤含量下降0.085%。

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  • The numbers of individuals and groups of soil fauna were significantly and positively related to contents of organic matter and total nitrogen in the soil.

    土壤动物类群个体数量土壤有机质含量呈明显相关

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  • Applying nitrogen fertilizer at heading stage could enhance contents of total nitrogen, total soluble protein, free amino acids and free lysine in wheat grains.

    抽穗期氮肥提高小麦籽粒含量可溶性蛋白质量及游离态氨基酸游离态赖氨酸量等。

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  • There are several key points including blank value, treatment of sediment and comparison of three kinds of nitrogen when monitoring and analyzing total nitrogen.

    阐述了在水质分析中,应注意空白沉淀物处理比较几个方面的问题

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  • The NWSN /total nitrogen ratio was bigger than 90 % in trifoliolates, higher than that in stems and that in petioles, but they changed hardly with growing stages.

    植株部位非水溶性氮含量占氮的比例,叶片90%以上高于叶柄,随生育时期变动很小

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  • The results showed that:1) The high content of nicotine, the low content of total nitrogen and potassium were found in central and south Henan tobacco-growing areas.

    结果表明1)豫中和豫南两个烟烟叶烟碱含量均偏高,含量偏低

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  • The results showed that:1) The high content of nicotine, the low content of total nitrogen and potassium were found in central and south Henan tobacco-growing areas.

    结果表明1)豫中和豫南两个烟烟叶烟碱含量均偏高,含量偏低

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