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- The vertical transport of soil water and nitrate N in main soil groups (yellow fluvo-aquic soils and Aeolian sandy soil) in Huang-Huai-Hai Plain was simulated by HYDRUS-1D model. 应用HYDRUS-1D模型对黄淮海平原的主要土壤(黄潮土和风沙土)中水分与硝态氮的垂直运移规律进行了模拟分析。
- The increase amount of residual nitrate N from third harvesting to fifth harvesting was 51.6% of the total amount of applied nitrogen during this period. 从第三季作物收获到第五季作物收获，残留硝态氮的增加量占这一时期氮肥施用量的比例高达51.;6%25。
- Soil NO3--N concentration and accumulation of intercropped faba bean were lower than that of solecropped faba bean at three nitrogen rate. 在3个氮水平下，蚕豆间作土壤硝态氮含量和累积量都低于单作。
- There are notable differences of N concentration ,P concentration ,C:N ratio and C:P ratio between leaves on the surface and those 5cm below the surface . 林型和时间对N浓度、P浓度、C/N比、C/P比变化趋势产生影响。 同一种林型内地表和地下5厘米处叶片对N浓度、P浓度、C/N比、C/P比变化趋势也会产生影响。
- Apparent difference of CND among all Ntreatments showed before early grain filling stages in Jingdong8, but post-anthesis in Zhongyou9507.There appeared apparent vertical gradients of both leaf N concentration and CND in canopy. 叶片含氮量与籽粒品质指标的相关程度高于茎鞘含氮量，京冬8开花期叶片含氮量与蛋白质含量的相关性最高，9507则灌浆盛期最高。
- This paper probes into the NH 4 + N, NO 3 - N concentration dynamics on DMPP (3,4 dimethylpyrazole phosphate) in vegetable soils under fertilized condition with aerobic cultivation. 为进一步完善蔬菜硝酸盐污染的调控技术体系 ;采用好气培养法研究了新型硝化抑制剂 3;4 -二甲基吡唑磷酸盐 ( DMPP)对菜园土壤 NH4 +- N;NO3- - N含量的影响 .
- Soil NO3-- N concentrations responded N addition in all studied forests and were significantly increased in pine and monsoon evergreen forests. 外加氮处理提高土壤硝态氮水平,其中在马尾松林和阔叶林氮处理效应显著。
- Hydroponic experiments were conducted to study nitrogen (N) uptake of eight rice cultivars under three N concentrations (1, 2 and 4 mmol/L, respectively). 摘要采用溶液培养方法研究了不同水稻品种获取氮能力的差异及其原因。
- Chapter n concentrates on Eileen Chang"s so-called philosophy of ordinary life in her works, showing how she rejects any transcendental ideals and values. 第二章以张爱玲作品中隐含的日常生活哲学为焦点，展示她如何拒斥理想主义和超验价值。
- Nitrate N Accumulation in Vegetable Soil in Guanzhong Area of Shaanxi Province 陕西关中地区蔬菜地土壤的NO_3-N累积
- The effect of N on nodule development of soybean occurs at much lower concentrations than previously reported probably due to the maintenance of constant N concentrations. 氮对大豆根瘤发育影响的最低浓度比过去报告的更低，这可能是由于试验时维持了不变的氮浓度的缘故。
- Overall, soil NO3-- N concentrations were significantly higher in monsoon evergreen broadleaf forest than in mixed or pine forests, but the difference was not significant between mixed and pine forests. 整体而言,阔叶林土壤硝态氮极显著高于马尾松林和混交林,而马尾松林和混交林之间的差异则不显著。
- Overall, soil NO3--N concentrations were significantly higher in monsoon evergreen broadleaf forest than in mixed or pine forests, but the difference was not significant between mixed and pine forests. 整体而言,阔叶林土壤硝态氮极显著高于马尾松林和混交林,而马尾松林和混交林之间的差异则不显著。
- His area of concentration is nuclear physics. 他的专门研究范围是原子物理学。
- Nitrate of soda may be sown on pasture that does not eat off. 可以把硝酸钠撒在牧草还没有吃光的草地上。
- The drug affects one's power(s) of concentration. 这种药影响人精神不能集中。
- There is a concentration of people in big cities. 大城市人口集中。
- He seized every chance to break out of the Nazi concentration camp. 他抓住一切机会从纳粹集中营跑出来。
- A state of mental concentration. 专心致志，全神贯注全神贯注的状态
- A highly explosive mixture of ammonium nitrate and trinitrotoluene. 阿马托炸药一种由硝酸铵和三硝基甲苯组成的烈性混合炸药
