土壤全氮

施用化肥（N、NPK）比不施肥的农田（CK）具有较高的土壤全氮含量水平；

Application of chemical fertilizer ( N , NPK ) could increase soil total N content compared with CK .

相关分析表明，CPMI与土壤全氮、全磷、碱解氮、速效磷、速效钾、pH相关或极相关。

Correlation analysis indicated CPMI was not only related or extremely related to total N , total P , hydrolyzable N , readily available P , K and pH , but also sensitive to agricultural practices .

施用有机肥的土壤全氮、全磷、重组磷及C/N比均呈提高趋势，pH值降低，其原土和重组复合体的阳离子交换量较高。

The contents of total nitrogen , total phosphorus , content of exchangeable cation ( CEC ) and C / N specific ratio were all improved .

结果表明：紫色土氮素矿化势（No）占土壤全氮量的12.85%19.44%，矿化速率常数（K值）为0.10930.2005W（－1）；

The No value of soil accounted for 12.85 % - 19.44 % of total soil nitrogen content . The nitrogen mineralization rate ( K ) ranged from 0.1093 to 0.2005 W ￣( - 1 ) .

相关分析表明：土壤全氮和硝态氮含量影响20cm土层中硝态氮的淋失量，三者之间呈显著正相关关系；

Total soil nitrogen content and nitrate content significantly influenced nitrate leaching amount from 20 cm depth soil , they had significant positive correlation .

灵敏度分析表明，在输入参数变化±10%时，CropC-对6个主要输入参数响应的敏感性依次为温度>光合有效辐射>大气CO2浓度>土壤全氮含量>施氮量>降水。

Model sensitivity analysis suggests that the sensitive significance of Crop-C to input parameters is in descending order of temperature , PAR , atmospheric CO2 concentration , soil nitrogen concentration , rate of nitrogen application and precipitation when the input parameters vary at-10 % and 10 % , respectively .

土壤全氮、微生物量氮和K2SO4浸提氮的含量，皆是灌溉耕地土壤最高，草地最低；

The content of total N ( TN ), microbial biomass N ( MBN ), K2SO4 extractable N ( K2SO4-N ) of the soil and aggregates were all highest in irrigated arable and were lowest in grassland .

而1～0.25mm团聚体与土壤全氮含量以及硝态氮含量呈显著负相关关系。说明5～2mm团聚体是土壤有机质、全氮和硝态氮的主要载体。

However , the correlation between the percentage of mass of soil macro-aggregates with the size of 1-0.25 mm and the contents of total nitrogen and nitrate nitrogen is significantly negative .

通过分析测试，研究了陕西12种农业土壤全氮（Nt），矿质态氮（Nmin）和土壤有机态氮（Norg）的组成。

The composition of total soil nitrogen ( Nt ), mineral soil nitrogen ( Nmin ) andorganic soil nitrogen ( Norg ) of twelve different kinds of loessial soil in Shaanxi pro-vince were studied through soil testing technique .

土壤全氮的季节变化规律基本上呈单峰曲线，峰值出现在7月份为445.8g·m~（-2），最低值在9月份为333.7g·m~（-2）。

The dynamic of total N in soil showed single-hump curve by and large . The maximum and minimum were 445.8g m-2 and 333.7 g m-2 which happened in July and September respectively .

土壤全氮含量平均为0.082%，有效氮含量平均为57.7mg/kg，有76.3%的土壤有效氮在30～65mg/kg之间；

The average contents of total N and rapidly available N were 0.082 % and 57.7mg/kg respectively while the contents of rapidly available N of 76.3 % soil samples were among 30 ~ 65mg / kg .

土壤全氮、有效磷的含量与土壤吸附Cry1Ab蛋白呈正相关，土壤全氮、有效磷和速效钾的含量与解吸均呈负相关。

The correlation between the adsorption and the content of total nitrogen or readily available phosphorus was positive , while it was negative between the desorption and the content of total nitrogen , readily available phosphorus or readily available potash .

全氮含量有所下降，占总面积50.81%的地区土壤全氮含量下降了0～0.1g/kg，下降幅度大于0.1g/kg的区域占总面积的24.91%；

The total N has decreased and reduced by 0 ~ 0.1 g / kg covers the 50.81 percent of total area , reduced range larger than 0.1 g / kg covers the 24.91 percent of total area .

结果表明，试验区土壤全氮含量平均为0.4g/kg，土壤碱解氮为16.76mg/kg，氮素水平低，供氮能力差。

Results showed that soil nitrogen content in the experiment area are much lower than those in other similar areas and the nitrogen supplying potential of soils is low ( total N 0.4 g / kg averaged and alkali-hydrolyzable N 16.76 mg / kg averaged ) .

滨河湿地土壤全氮含量及其与含水率相关性分析

Correlation between soil total nitrogen content and water content in riparian wetland

矿化势与土壤全氮、有机质、无定形氧化铁等密切相关。

So were total N , organic matter and amorphous iron oxide .

多水平贝叶斯模型预测森林土壤全氮

Hierarchical Bayesian model for predicting the soil nitrogen of forest

氨气敏电极法测定土壤全氮

Total nitrogen in soils determined by means of the ammonia & sensing electrode

土壤全氮含量在不同土地利用方式下显著性差异不明显。

The difference of TN contents under different land use patterns is not significant .

土壤全氮含量逐渐减少；

The contents of total N decreased gradually ;

这表明土壤全氮和有机质存在高度的相关性。

This also shows that the soil nitrogen and organic matter has the high correlation .

土壤全氮的快速测定

Rapid determination of total nitrogen in soil

氮磷钾化肥与有机肥料结合施用，显著提高了土壤全氮含量。

The application of organic manure had significant effect on increasing soil total N content .

太原市农业土壤全氮和有机质的空间分布特征及其影响因素

Spatial characteristics and impact factors of soil total nitrogen and soil organic matter in Taiyuan

新果园土壤全氮背景值为：0.97×10~3mg。

New orchard soil the whole nitrogen background value is 0.97 × 10 ~ 3mg .

草酸含量与土壤全氮、全磷成负相关。

The oxalic acid content and soil total nitrogen , total phosphorus are negatively correlated .

相反，施用磷肥对土壤全氮和有机氮各组分影响较小。

In contrast , P application did not significantly affect total N and organic N forms .

江汉平原典型区农田土壤全氮空间变异的多尺度套合

Multi-scaled nesting of spatial variability of soil total nitrogen in farmland soils typical of Jianghan Plain

不同施肥处理下土壤全氮含量和碱解氮含量之间的相关关系均达到极显著正相关。

The correlation between STN content and SAN content were significant positive correlation under different fertilization .

太湖流域典型地区土壤全氮的空间变异特征

Characteristics of spatial variability of total soil nitrogen in the typical area of Taihu Lake basin