1)available nitrogen速效氮
1.A grazed hillslope with four types of vegetation in the Majiasongpo catchment,Xichang,Sichuan Province was investigated to understand the effects of grazing on surface soil organic carbon(SOC),available nitrogen(N) and bulk density.为了评价表层土壤有机碳和养分对放牧和不同植被类型互作的反应,选择四川省西昌市西溪乡牛郎村马家松坡放牧丘陵坡地,分别在坡顶、上、中、下部各层采集有乔木(桉树)、灌木(米油枝)、草本3种类型植被覆盖以及无植被覆盖的0—5 cm表层土壤,测定分析了土壤容重、土壤有机碳、速效氮含量。
2.16 g·kg~(-1),available nitrogen decreased 7.选取经济发达区原锡山市作为研究区域,以土壤全氮和速效氮作为研究对象,探讨土地利用变化对土壤氮含量的影响,以表明人类活动对生态系统的影响。
3.The experiments in pot culture were conducted to study the effects of Anaerobic Fermentation Residues (AFR) on nitrate accumulation in rape and available nitrogen in soil in order to provide new way for the comprehensive utilization of biogas engineering.研究沼气发酵产生的厌氧发酵残余物 (沼液、沼渣 ,以下简称沼肥 )在培肥土壤过程中土壤速效氮的变化及对油菜硝酸盐含量的影响 ,为沼气综合利用提供新的理论和技术依据。
英文短句/例句
1.Effects of Water and Fertilizers on Available N and P of Protected Soils Planting Capsicum水肥处理对辣椒保护地土壤速效氮、磷的影响
2.Effect of Return of Total Wheat Straw on Soil Mineral Nitrogen Dynamics and Rice Yield小麦秸秆全量还田对土壤速效氮及水稻产量的影响
3.Advance in comparison on determination of available nitrogen, phosphorus,potassium in soil by ASI method and its correlation with fertilizer absorptionASI法测定土壤速效氮磷钾的方法比较及相关性研究进展
4.Spatial variability of soil available N,P and K and influencing factors土壤速效氮、磷、钾含量空间变异特征及其影响因子
5.Surface effects of W18Cr4V high speed steel substrate irradiated by Nitrogen ion beams氮离子束轰击W18Cr4V高速钢的表面效应
6.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
7.The soil organic matter and total N stabilize basically, available P increase while alkaline hydrolyze N decrease obviously in the cornrice rotation.玉米、稻连作土壤有机质和全氮基本稳定，有效磷呈上升趋势，碱解氮和速效钾下降趋势明显。
8.Comparison Study on the Methods for Determination of Available N、P and the Organic Matter in Forest Soil;森林暗棕壤碱解氮、速效磷和有机质测定方法的比较研究
9.Study on nitrogen-rich layer fast plasma nitriding process and mechanism富氮层快速离子渗氮工艺及机理研究
10.Study on fast plasma nitriding technology of 40Cr steel with nitrogen-rich layer40Cr钢富氮层快速离子渗氮技术的探索
11.apparatus for rapid determination of nitrogenoxide氧化亚氮快速测定器
12.A Fast Method for Recoverying Small Molecule DNA Fragment by Quick-Frozen in Liquid Nitrogen液氮速冻法快速回收小分子DNA片段
13.Solvation Effect in S_N Reaction of Diazodenitrogenation;重氮去氮反应在S_N中的溶剂效应
14.Rapid Determination of Ammoniacal Nitrogen in Silage by Automatic Kjeldahl Apparatus自动凯氏定氮仪快速测定青贮饲料中的氨态氮
15.Genotypic Differences in Grain Yields and Nitrogen Use Efficiency in Rice Cultivars;水稻氮效率基因型差异评价与氮高效机理研究
16.Nitrogen Application Law and Benefit Analysis on a High N Use Efficiency Rice Variety Xieyou 9019氮高效组合协优9019的氮肥运筹规律与效益分析
17.Study on Boletus Aereus Freezing Pattern by Liquid Nitrogen Flash Freezer液氮速冻黑牛肝菌冻结规律初步研究
18.Influence of Nitrogen,Phosphorus and Iron on Growth of Alga Pavlova gyrans氮、磷、铁对定鞭金藻生长速率的影响
相关短句/例句
Available N速效氮
1.The staistics of those data rusults showed that the content of available N, P, K of Siping cultivated horizon soil in 1995 increase, comparison with that of 1982.通过对1995年四平市4271个耕层土壤样本化验结果的汇总分析,并与1982年的化验结果进行比较,发现四平市耕层土壤速效氮、磷、钾含量有所增加,以速效磷增加尤为突出。
3)Available N & K速效氮钾
4)available nitrogen fertilizer速效氮肥
5)soil available nitrogen土壤速效氮
1.This study investigated the effect of soil nitrogen regulator on soil available nitrogen.研究了土壤氮素调理剂对土壤速效氮含量的影响。
6)Content of rapidly available nitrogen in soil土壤速效氮含量
延伸阅读
速效1.亦作"速効"。 2.指短期内很快就取得的成效。
