1.
Studies on Effects of the Application Rate of Chemical Nitrogen Fertilizer on Yield and Quality and Nitrogen Fertilizer Utilization Ratio of Vegetables;
化学氮肥用量对蔬菜产量、品质及氮肥利用率影响的研究
2.
Effect of Chemical Nitrogen Fertilizer Application Rate and Organic-inorganic Compound Fertilizer on Yields and Quality of Vegetables;
化学氮肥用量及有机无机复混肥对蔬菜产量和品质的影响
3.
The Effects of Neem Seeds Extracts on the Transformation of Chemical Nitrogen Fertilizer in Different Solis;
楝树籽提取物在不同土壤上对化学氮肥转化的影响
4.
The Study on New Technology of Using Fertilizer Nitrogen and Phosphorus Efficiently;
氮、磷化学肥料高效利用新技术探索研究
5.
Effects of Nitrogen Forms on the Chemical Behavior of Heavy Metals in the Soils Amended with Sewage Sludge and the Uptake by Plant;
不同形态氮肥对土壤中重金属化学行为变化及植物吸收的影响
6.
Biological Effects of Organic Materials and Nitrogen on M.hupehensis Rehd;
有机物料和氮素化肥对平邑甜茶实生苗生物学效应的研究
7.
Nutrient Use Efficiency and Stoichiometry of Nitrogen and Phosphorus of Major Coniferous Trees in Hefei
合肥常见针叶树种养分利用效率及氮磷化学计量的研究
8.
Dynamics of nitrogen in double-rice paddy soil under application of chemical fertilizer combined with manure
化肥有机肥配合施用下双季稻田氮素形态变化
9.
A Study on Nitrogen Transformation and NH_3 Emission During Composting;
堆肥化过程中氮素转化和NH_3挥发研究
10.
Mechanism of Soil N Supply in Paddy Soil and Reaching Optimal N Application for Rice;
稻田土壤供氮机理及水稻氮肥优化施用研究
11.
Studies on the Nitrogen Transform and Reducing Nitrogen Loss during Composting;
堆肥氮素转化及原位减少氮素损失的研究
12.
Effect of Nitrogen Application on Nitrogen Assimilation in Strong Gluten Wheat Cultivated on Sand Beach Soil of Huanghe River
氮肥运筹对黄河沙滩地优质麦氮素同化的影响
13.
Where they do use chemical fertilizer, they tend to use nitrogen only, thereby mining the soils.
使用化肥时，只施用氮肥，从而其它养分逐渐耗竭。
14.
Characteristic of Nitrogen Use Efficiency of Central Food Crops under Long-term Fertilization;
长期施肥下我国粮食作物氮肥利用率变化特征
15.
Effect of Chemical Fertilizer Applied Combing with Organic Manure on Yield of Rice and Nitrogen Using Efficiency
化肥有机肥配合对水稻产量和氮素利用的影响
16.
The application impact of bioorganic manure plus nitrogen fertilizer on rice yield
生物有机肥配施氮素化肥对水稻产量的影响
17.
Effects of Partial Mineral Nitrogen Substitution by Organic Fertilizer Nitrogen on the Yields of Rice Grains and Their Proper Substitution Rate
有机肥料氮替代部分化肥氮对稻谷产量的影响及替代率
18.
The optimum ratio of N:P:K should be 2. 1:1: 0. 4.
化肥氮磷钾比例应是2.1∶1∶0.4。