1.
Extracting of Soil Nitrogen,Phosphorus and Potassium with 0.5 mol L~(-1) NaHCO_3
0.5mol L~(-1) NaHCO_3提取土壤氮磷钾的研究
2.
Studies on Abundance and Deficiency Index of Nitrogen, Phosphorus and Potassium for the Soil Based on the Experiment of "3414";
基于“3414”试验的土壤氮磷钾丰缺指标制定与应用研究
3.
Study on the Effects of Nitrogen and Potassium on Muskmelon in the Soil of Rich Phosphorus;
富磷土壤条件下厚皮甜瓜氮、钾施肥效应研究
4.
Effects of Drought Stress on Rhizosphere Enzyme, N, P, K and Root Organic Acid
干旱对根际土壤酶、氮磷钾及根部有机酸的影响
5.
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
6.
Nitrogen,Phoshorus and Potassium Adsorption Characteristics of Peat,Sandy Soil,Loamy Soil and Their Mixture
草炭及其改良土壤对氮、磷、钾的吸附特性
7.
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。
8.
Using NIRS to Predict the Content of Available Nitrogen, Phosphorus and Potassium in Soil
近红外光谱法快速测定土壤碱解氮、速效磷和速效钾含量
9.
Treatments of manure, lime, N, P, and K are necessary to maintain nutrient levels and productivity of the soil.
需要粪肥、石灰、氮、磷和钾处理以维持土壤养分水平和生产力。
10.
Effect of soybean yield and soil water in semiarid district of northeast under the different ratios of N, P and K
不同氮磷钾配比对东北半干旱区大豆产量及土壤水分的影响
11.
The Relationship between Topographic and Soil Organic Matter、Total Nitrogen、Phosphorus、Potassium in the Xianshuihe Valley;
鲜水河上游流域地形因子与土壤有机质、氮、磷和钾相关性研究
12.
Status of Soil Organic Matter and Nitrogen, Phosphorus, Potassium and Their Influence Factors in Tibet;
西藏土壤有机质和氮磷钾状况及其影响因素分析
13.
Effects of Different Nitrogen, Phosphorus and Potassium Fertilizers on Availability of Soil Cadmium and Cadmium Uptake by Wheat
不同氮磷钾肥对土壤镉有效性和小麦吸收镉的影响
14.
Effect of different planting years on the yield of alfalfa and content of N,P,K in soil
种植年限对紫花苜蓿栽培草地草产量及土壤氮、磷、钾含量的影响
15.
Effects of Lanthanum on Biomass and Plant Nitrogen,Phosphorus,Potassium Content of Green Stuff and Soil Enzyme Activities
镧对青菜生物量、植株氮磷钾含量及土壤酶活性的影响
16.
Effect of Different N,P and K Fertilizers on Soil pH and Available Cd Under Waterlogged Conditions
淹水条件下不同氮磷钾肥对土壤pH和镉有效性的影响研究
17.
Analysis of Correlations Between Forms of Nitrogen,Phosphorus and Potassium in Soil and Tobacco Compositions
土壤氮、磷、钾形态与烟叶主要化学成分相关性研究
18.
The status and changes of organic matter,nitrogen,phosphorus and potassium under different soil using styles of Shouguang of Shangdong Province
山东寿光不同利用方式下农田土壤有机质和氮磷钾状况及其变化