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- 硝态NNitrate - nitrogen
- 本文用CID/6-31G~*和HF/6-311G~(**)方法,计算了基态N_2H~+离子的几何构型,鞍点,能量,力常数,振动频率以及离解能。The present paper is to provide the calculated results of equilibrium geometry, saddle point, energy, dissociation energy, vibration frequency and harmonic force field based on ab inition ca culations using CID / 6-31G~* and HF/6-311G~(**) methods for ground state N_2H~+.
- 硝态氮tric nitrogen
- 测定0.01molL~(-1)CaCl_2提取液中的可溶性有机态N对预测土壤N素矿化、合理推荐施肥及防止N素污染可能是一个很有前途的指标。The 0.01 molL~(-1) CaCl_2 solution extracted and released the labile organic N fraction. The determination of soluble org anic N in 0.01 molL~(-1) CaCl_2 solution looked promising as a property for prediction of N mineralization,N fertilization and N pollution.
- 硝态氮肥nitrate fertilizer
- 计算结果表明,在指定反应物分子的振动态n_0、转动态j_0时,两个反应体系的反应截面随相对平动能的增加先是增加后是减小(j_0=1,n_0=0除外);We found that the reaction cross sections of the two systems first increase and then decrease as collision energy increases at given vibrational-rota- tional quantum number (n_0j_0), except n_0=0 and j_0=1;
- 硝态氯Nitrate-nitrogen
- 填闲作物的种植对下茬蔬菜产量及土壤硝态氮含量的影响Effect of Nitrogen-catch Crop on Vegetable Yields and Nitrate Content
- 施氮水平对高产麦田土壤硝态氮时空变化及氨挥发的影响Effects of nitrogen application level on soil nitrate accumulation and ammonia volatilization in high-yielding wheat field
- 亚硝态氮trite nitrogen
- 不同硝态氮处理条件下杉木桩提取物对杉木种子的化感效应Allelopathic effect of allelochemicals of Chinese fir stump on germination of Chinese fir seed treated with different sodium nitrate levels
- 土壤硝态氮soil nitrate nitrogen
- 累积硝态氮Accumulated nitrate-N
- 硝态氮累积Accumulation of nitrate nitrogen
- 硝态氮污染nitrate contamination
- 硝态氮分布nitrate distributing
- 硝态氮含量nitrate nitrogen concentration
- 硝态氮淋溶nitrate nitrogen leaching
- 硝态氮浓度nitrate-N concentration
- 硝态氮动态nitrate-nitrogen dynamic
