1.
Studies on Changes of Nitrogen and Phosphorus in Surface Water and Soil Profile of Paddy Fields Affected by Fertilization and Nutrient Management on Chengdu Plain;
施肥对成都平原稻田土、水层氮磷变化特征的影响及养分管理研究
2.
CHANGES IN [N], [P] AND SPECIFIC LEAF AREA OF GREEN LEAVES OF LEYMUS CHINENSIS ALONG NITROGEN, PHOSPHORUS AND WATER GRADIENTS
羊草绿叶氮、磷浓度和比叶面积沿氮、磷和水分梯度的变化
3.
Research on Varying Laws of the Content of Nitrogen, Phosphorus and Potassium in Dioscorea nipponica in Growth Period
生长期穿龙薯蓣氮、磷、钾养分含量变化规律研究
4.
Effects of Dissolved Oxygen Concentration on Phosphorus and Nitrogen in the Sediments from Shallow Lakes;
浅水湖泊溶解氧变化对沉积物磷、氮的影响
5.
Study on Temporal and Spatial Variation of Soil Nitrogen and Phosphorus in an Intensive Managed Phyllostachys Praecox Stands;
集约经营雷竹林土壤氮、磷时空变化的研究
6.
The Transformation of Nitrogen and Phosphorus Forms during Co-Composting of Sewage Sludge and Straw Biomass.;
污泥与秸秆堆肥过程中氮、磷形态变化研究
7.
Seasonal Variation and Output of C、N、P in Jialing River
嘉陵江水体中碳、氮、磷季节变化及其输出
8.
Seasonal dynamics of nitrogen-and phosphorus absorption efficiency of wetland plants in Minjiang River estuary
闽江河口湿地植物氮磷吸收效率的季节变化
9.
Evolution Trend of Soil Available N, P and K Contents in Xinmin District
新民市农田土壤有效氮、磷、钾含量变化分析
10.
Variation Rules of Water Quality and Budget of Nitrogen and Phosphorus in Ponds with Grass Carp as the Dominant Cultured Species
主养草鱼池塘水质指标的变化规律和氮磷收支
11.
By using plot experiment, the paper studied nutritional effects of N P K fertilizers and the effect on seasonal changes in concentrations of N P K and their distribution patterns on sugarbeet.
研究了淋溶黑钙土土壤施用氮磷钾肥对甜菜体内氮磷钾浓度的变化和分布模式的效应。
12.
The Changes of Inorganic Nitrogen、Active Phosphorus and Chemical Oxygen Demand(COD) at Guanhe River Estuary in the North of Jiangsu Province
苏北灌河口海域水体中氮、磷及化学耗氧量（COD）的变化研究
13.
Changes of Humic Acid,N and P During Incubation of Leonardite with Maize Straw
风化煤与玉米秸秆发酵过程中腐植酸及氮磷的变化
14.
Nitrogen and Phosphorus Removal Characteristics of Denitrifying Polyphosphate-accumulating Organism C18
反硝化聚磷菌C18脱氮除磷特性研究
15.
Photosynthetic characteristics and N, P, K contents of Cyclamen persicum during the summer dormancy stage
仙客来夏季休眠期叶片光合速率和植株氮磷钾质量分数的变化
16.
Effects of returning maize straw into field on dynamic change of soil microbial biomass C,N and P under different promoted decay condition
不同促腐条件下秸秆还田对土壤微生物量碳氮磷动态变化的影响
17.
Effects of N, P, K and their combinations on dry matter accumulation of Paspalum notatum
氮磷钾配施对百喜草干物质积累及其动态变化的影响
18.
STUDIES ON CHANGES OF CONTENTS OF N, P, K AND PROTEIN OF DIFFERENT PARTS IN ZIZANIA LATIFOLIA
茭白地上部氮磷钾及蛋白质含量变化规律的研究