1.
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
2.
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
3.
given nitrogen rich organic matter in soil
在土壤中施含氮量高的有机质
4.
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。
5.
water content of soil
土壤含水量（土壤含水率）
6.
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
7.
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
8.
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
9.
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
10.
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。
11.
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
12.
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
13.
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
14.
Content and Distribution Characteristics of Soil Organic Carbon and Total Nitrogen of Grassl and in Yunwu Mountain
云雾山草地土壤有机碳全氮含量与分布特征
15.
Contents and Characteristics of Soluble Organic Carbon, Nitrogen in the Arable Soil
农田土壤中可溶性有机碳、氮的含量及特性研究
16.
Effect of Nitrogen Application on Nutrient Content of Soil and Soybean Plant
施氮对土壤和大豆植株养分含量的影响
17.
Characteristics of Nitrogen Content of Rhizosphere and Xerophilous Shrubs
旱生灌木根际及灌丛土壤氮素含量特征研究
18.
Inorganic Nitrogen and Available Phosphorus Concentrations in the Soils of Five Forests at Dinghushan,China
鼎湖山5种森林土壤的无机氮和有效磷含量