1.
Experimental Study on Total Nitrogen Concentration in Soil by VNIR Reflectance Spectrum;
利用可见光/近红外反射光谱估算土壤总氮含量的实验研究
2.
soil quality - determination of total nitrogen - modified method
土壤质量-总含氮量的测定法-修改的hjeldahl法
3.
Nitrogen content in soil and total nitrogen content of flue-cured tobacco and their relationships in Enshi tobacco-growing areas
恩施烟区土壤和烤烟总氮含量及其关系研究
4.
Distribution and Relationship of Nitrogen Content in Flue-cured Tobacco Leaf and Soil in Sanmenxia Tobacco Districts
三门峡烟区烤烟总氮与土壤氮素含量的分布特点及关系分析
5.
Real-time Analysis of Soil Total N and P with Near Infrared Reflectance Spectroscopy
土壤中总氮与总磷含量的近红外光谱实时检测方法
6.
Contents of Active Organic Carbon, Nitrogen and Its Relationship with Nitrogen Mineralization of Soil on the Loess Plateau;
黄土区几种土壤中活性有机碳、氮含量及其与土壤氮素矿化的关系
7.
given nitrogen rich organic matter in soil
在土壤中施含氮量高的有机质
8.
Maize straw returning to the field can increase the soil total nitrogen and inorganic nitrogen content.
秸秆还田增加了土壤全氮和无机氮含量。
9.
water content of soil
土壤含水量（土壤含水率）
10.
Soil Nitrogen Content and Enzyme Activity in Different Utilization Types of Land in the Upper Reaches of Lancang River
澜沧江上游不同土地利用类型土壤氮含量与土壤酶活性研究
11.
Influence of Glutin on the Number of Microbial Population and Mineral Nitrogen Content in Soil
明胶对土壤微生物数量及矿质氮含量的影响
12.
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
13.
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
14.
In summary, under zero till crop response to nitrogen levels in the spring was approximately twice as large compared to conventional till.
总之，在免耕地条件下，春季作物对土壤含氮量的反应大约是常规耕作的2倍。
15.
Soil drought reduced moisture content and nitrogenase activity of nodules.
土壤干旱降低田菁根瘤的含水量和固氮活性。
16.
Study on the Content of N_2O and Its Dynamics in Soils.
土壤中一氧化二氮的含量及其动态的研究
17.
Influence of Soil Nutrient Content Supplement Apply by N,K and Zn Fertilizer on Maize Field
玉米氮钾锌肥配施对土壤养分含量的影响
18.
Contents and Changes of Soluble Organic Nitrogen in the Different Soils;
土壤中可溶性有机氮含量及影响因素研究