1.
Fertilizers--Determination of nitrate nitrogen content--Nitron gravimetric method
GB/T3597-1983肥料中硝态氮含量的测定氮试剂重量法
2.
Effects of Different Nitrogen Fertilization Levels on Yield of Cucumber,the Soil Nitrate-N Accumulation and the Soil Solution Nitrate-N Concentrations
不同氮肥水平对黄瓜产量、土壤硝态氮累积及土壤水溶液硝态氮含量的影响
3.
Effect of Different Nitrogen Fertilization Rate and Irrigation Rate on Nitrate Nitrogen Concentration in Wheat-Maize Interplanting System
施氮量和灌溉量对小麦/玉米间作土壤硝态氮含量的影响
4.
Analysis on Nitrate Nitrogen Content of Soils for Planting Vegetable in Different Areas of Yangtze River Delta
长三角不同地区蔬菜种植土壤硝态氮含量分析
5.
Nitrate Content and the Influence Factors of Groundwater in Ningxia
宁夏地下水中硝态氮含量状况及其影响因素
6.
Effects of irrigation with piggery wastewater on nitrate nitrogen dynamics in fluvio-aquatic soil
猪场废水灌溉对潮土硝态氮含量变化的影响
7.
Effect of Different Levels N Application on the Nitrate Accumulation in Cucumber and Soil in Sunlight Greenhouse
氮肥用量对日光温室黄瓜和土壤硝态氮含量的影响
8.
The concentrations of ammonia and nitrate in water-sediment interface varied seasonally.
水－沉积物界面氨氮和硝态氮含量呈现明显季节性变化。
9.
The nitrate concentration below the root absorption area was obviously higher than that in the root absorption area.
其中根系吸收区下的硝态氮含量明显高于吸收区;
10.
Effects of Combined Application of Organic and Inorganic Fertilizers on Soil Ammonia Volatilization and Nitrate Accumulation in Winter Wheat Field;
有机无机肥料配施对麦田土壤氨挥发和硝态氮含量的影响
11.
GIS-based Analysis of Spatio-temporal Variability of Groundwater Nitrate Concentration in High-yield Region in North China Plain
基于GIS的华北高产粮区地下水硝态氮含量时空变异特征
12.
Analysis on the Current Situation of Nitrate-N Concentration in Groundwater and Its Causes in Bohai Rim of Hebei Province
河北省环渤海地区地下水硝态氮含量现状及其成因分析
13.
Effect of Land Use Pattern on Content of NO_3~--N in Shallow Groundwater in Guiyang City
贵阳市城郊区不同土地利用方式下浅层地下水硝态氮含量的变化
14.
Effects of irrigation amount and stage on nitrogen accumulation,distribution,translocation and soil NO_3~--N content in high-yield wheat
灌水量和时期对高产小麦氮素积累、分配和转运及土壤硝态氮含量的影响
15.
Effects of nitrogen fertilization on nitrate content of radish(Raphanus sativus L.) and soil nitrate leaching
施氮量对白萝卜硝酸盐含量和土壤硝态氮淋溶的影响
16.
Effects of Different Nitrogen Concentration and Form on Nitrate in Radish Leaf;
氮素浓度及形态对叶用萝卜硝酸盐含量的影响
17.
The Experimental Research on the Influence of Initial Moisture Content to the Transport of Nitrate in Red Soil;
初始水分含量对红壤硝态氮运移影响的实验研究
18.
Exogenous NO_3~- Enhanced Sugar Contents and Sucrose Correlated Enzymes Activity in Roots of Sweet Cherry Under Waterlogging Condition
外源硝态氮提高淹水甜樱桃根系糖含量及蔗糖相关酶活性