1.
Effects of NH_4~+/NO_3~-ratio on nitrogen distribution,photosynthetic parameter and yield of potato
不同形态氮素比对马铃薯氮素分布、光合参数及产量的影响
2.
Study on Adjustment of the Ratio of C to N by Adding N During Straw Turnover
秸秆还田添加氮素调节碳氮比的研究
3.
Effect of Different Nitrogen Forms and Ratioes on Carbon-Nitrogen Metablism of Flue-Cured Tobacco Leaves;
不同氮素形态配比对烤烟叶片碳氮代谢的影响
4.
Nutrient leaching characteristics of bulk blending fertilizer of controlled release nitrogen with different controlled nitrogen ratio
不同控释氮比例的控释氮掺混肥氮素淋失特征研究
5.
Studies on the Effect of Nitrogen Forms and Nitrogen Proportion on Growth and Development of Blueberry;
氮素形态及氮素配比对越橘生长发育影响的研究
6.
The Effects of Light Intensity and Nitrogen Ratios on Metabolism of Nitrogen of Grape Plantlets in Vitro;
光照强度和氮素配比对葡萄试管苗氮素代谢的影响
7.
Contents of Nutrient Elements in NH_4~+-N Fertilizer and Urea
铵态氮肥和尿素中植物营养元素含量比较分析
8.
Impact of Wastewater C: N Ratio on Nitrogen Transport and Transformation in Wastewater Irrigation System
污水碳氮比对污灌系统氮素迁移转化影响的试验研究
9.
Comparative Studies on Characteristic of Nitrogen Uptake and Utilization and Differences of Nitrogen Use Efficiency of Different Oilseed Rape Cultivars;
不同油菜品种氮素吸收利用特性与氮效率差异的比较研究
10.
Difference in N Efficiency Among Maize Inbred Lines and Response of Maize to N Supply;
不同玉米自交系氮效率差异的比较及对氮素供应的反应
11.
Effect of Different Nitrogen Fertilizer Rate and Different Ratio of Base and Topdressing on Nitrogen Utilization, Yield and Quality in Winter Wheat;
施氮量和底追比例对小麦氮素利用和产量、品质的影响
12.
Evaluation of Two Models to Estimate Urinary Nitrogen Excretion by Milk Urea Nitrogen Content
乳尿素氮估测奶牛尿氮排泄量的两个模型比较研究
13.
Effects of AMF on key enzymes of nitrogen assimilation in maize Under different ammonium to nitrate ratios
不同氮素形态比例条件下接种AMF对玉米氮同化关键酶的影响
14.
Determination and significance of serum NO/BUN ratio in patients with epidemic hemorrhagic fever
流行性出血热患者血清一氧化氮/尿素氮比值的测定及其临床意义
15.
Organic Materials and Inorganic Minerals Comparative Study for Nitrogen Slowly Releasing Effect;
有机物和无机矿物对氮素缓释效应的对比研究
16.
Effect of Different Nitrogen Forms and Ratioes on Growth and Development of Flue-Cured Tobacco Root System;
不同氮素形态配比对烤烟根系生长发育的影响
17.
Study on Effects of Different Nitrogen Forms and Ratioes on Yield and Quality of Ligusticum Chuanxiong;
氮素形态及其配比对川芎产量与品质的影响
18.
Reaserch on Effective Factors in Determination of Ammonia-Nitrogen by Nessler's Reagent Colorimetry Method
纳氏试剂比色法测定水中氨氮影响因素的研究