Determination of nitrate nitrogen in fertilizer by reduction of sodium thiosulphate instead of chromium power;
用硫代硫酸钠代替铬粉还原测定肥料中硝酸态氮
Regulation effect of nitrate nitrogen on chromium toxicity to Brassica campestris L.ssp.chinensis(L.);
硝态氮对小白菜铬污染毒性的调控作用
Determination of nitrate nitrogen in fertilizer by high efficiency liquid Chromatographic method;
高效液相色谱法测定肥料中硝态氮含量
Horizontal movement rule of nitrate nitrogen in Xianghai marsh wetland soil;
向海沼泽湿地土壤中硝态氮的水平运移规律
A stochastic-convective transfer function model simulating resident nitrate-nitrogen concentration distribution in soil profile;
土壤剖面硝态氮浓度分布的随机—对流传递函数模拟
Losses of nitrate-nitrogen from a wheat-Corn rotation in north China;
华北地区小麦—玉米种植制度下硝态氮淋失量研究
Simulation and prediction of nitrate-nitrogen leaching from soils under the growth period of winter wheat using transfer function model;
冬小麦生长条件下土壤硝态氮淋洗的传递函数模拟和预报
Relationship between soil nitrate,nitrogen balance and utilization in rainfed land
旱地土壤硝态氮与氮素平衡、氮肥利用的关系
Molecular Regulation for Uptake and Utilization of Ammonium and Nitrate in Plant
植物吸收利用铵态氮和硝态氮的分子调控
The valence of cation combined with nitrate had basically no influence on the nitrate vertical transport.
与硝态氮结合的阳离子价数对硝态氮的垂直运移没有影响。
Dynamic simulation of ammonia-and nitrate N leakage from paddy field under different N supply
不同施氮水平下稻田铵态氮和硝态氮淋溶量的动态模拟
Removal of Nitrate from Industrial Wastewater by Use of Denitrifying Bacteria
反硝化细菌对造纸工业废水硝态氮去除的研究
Nitrite Accumulation During the Denitration Process in SBR at Low Temperature
低温SBR反硝化过程亚硝态氮积累试验研究
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
Effect of Hydrilla verticillata Decomposition Biomass on Nitrogen Content in Water Containing High Concentration of Nitrate
腐解黑藻生物量对高硝态氮水体氮素的影响
Influences of Cropping System on Soil Nitrate Nitrogen and Tobacco Nitride
种植制度对土壤硝态氮及烟叶氮化物的影响
Nitrate-N Leaching in 23-Year Winter Wheat Field Combined with Application of Nitrogen and Phosphorus
小麦氮磷肥长期配施对土壤硝态氮淋溶的影响
Study of Nitrogen Fertilization on Summer Maize Based on Soil Nitrate Nitrogen Test
基于土壤硝态氮测试的夏玉米氮肥施用研究
Nitrite Accumulation and Influential Factors of in Soil Nitrogen during Nitrification Process
土壤氮素硝化过程中亚硝态氮的累积及其影响因素研究
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
Effect of Different Nitrogen Fertilizer Levels on Vertical Distribution of NH_4~+-N and NO_3~--N in Rubber Plantation Soil
施氮量对橡胶园土壤铵态氮和硝态氮垂直分布的影响
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
Effects of Nitrogen Fertilizer Regulation on Vegetables Nitrogen Utilization and Soil Nitrate-N Residue
氮肥调控对蔬菜氮素利用及土壤硝态氮残留的影响研究
Effect of Different Nitrogen Rates on Nitrogen Utilization and Residual Soil Nitrate of Spring Maize
不同施氮水平对春玉米氮素利用及土壤硝态氮残留的影响
Effects of Models of N Application on Greenhouse Tomato N Uptake,Utilization and Soil NO_3~--N Accumulation
施氮模式对番茄氮素吸收利用及土壤硝态氮累积的影响