Abstract: [Objective] To study the best quality and yield of strawberry under different nitrogen levels in greenhouses and determine the optimum N application concentration.[Method] The research object of this study was "Fenxiang".The growth,the fruits and the quality of strawberry under six different nitrogen application rates were studied under the same cultivation and management techniques.[Result] In the treatment of six nitrogen levels,the plant height,stem diameter,leaf area and yield of strawberry increased with the increase of the amount of nitrogen applied in the range of 2 ～ 7.5 mmol/L.But when the nitrogen application rate was over 7.5 mmol/L,the nitrogen utilization rate would decrease and the plant height,stem diameter,leaf area and yield of strawberry showed a trend of decrease.[Conclusion] Nitrogen application level at 7.5 mmol/L was the best concentration for strawberry in greenhouse soilless cultivation.

摘要： [目的]研究温室不同氮素水平下无土栽培的草莓最佳品质和产量,确定最佳氮素施用浓度.[方法]以具有代表性的草莓品种丰香作为研究对象,在相同的栽培管理技术条件下,研究草莓在6种不同氮肥施用量下的生长、结果及品质.[结果]在施用6个氮素水平的处理中,当氮素施用量在2.0 ～7.5 mmol/L,随着施氮量的增加,植株的株高、茎粗、叶面积以及草莓的产量等均相应的增加,但是当氮素施用超过7.5mmol/L时氮素利用率会降低,且植株的株高、茎粗、叶面积以及草莓的产量等呈现降低趋势.[结论]氮素施用水平在7.5 mmol/L为温室无土栽培草莓最佳的氮素施用浓度.