不同氮素浓度处理对彩椒生长及几项生理指标的影响

The Impact of Different Nitrogen Concentrations on Pepper's Growth and Several Physiology Indices

通过研究不同浓度的氮素水平处理对无土基质培彩椒生长及几项生理指标的影响，以确定甜椒的最佳氮素施用浓度，为今后的甜椒生产的合理施用氮素提供科学的参考依据。结果表明：氮素含量极大影响了彩椒植株的生长和产量，氮素施用水平为5～15μmol／L范围内，适量增施氮肥有利于增产，彩椒的最佳氮素施用浓度为15μmol／L。当氮素施用量过低（2．5μmol／L）和过高（20μmol／L）时对彩椒植株的生长不利。

This experiment studied different concentrations of nitrogen level affecting pepper soilless substrate growth and several physiological indices,to determine the best concentration of nitrogen applied to sweet pepper,to provide scientific basis for a reasonable application of nitrogen to the peppegs production for the future. Test results indicated：Pepper plant growth and yield was greatly influenced by nitrogen content,nitrogen fertilizer range of 5～15 μmol/L, adequate help in- crease fertilizer production,the best application of nitrogen concemration to pepper is 15 μmol/L. When the nitrogen application amount is too low （2. 5μmol/L） and too high （20 μmol/L）, it is harmful to the growth of Pepper detrimental.