The proper time for monitoring leaf soluble sugar to nitrogen ratio should be from booting to silking stage.
利用冠层反射光谱监测叶片碳氮比的适宜时期为孕穗期至吐丝期。
The NWSN /total nitrogen ratio was bigger than 90 % in trifoliolates, higher than that in stems and that in petioles, but they changed hardly with growing stages.
植株各部位非水溶性氮含量占全氮的比例，叶片在90%以上，高于茎和叶柄，随生育时期变动很小。
Through flask culture, research Lentinula edods submerged culture optimum fermentation time, the optimum carbon, nitrogen and optimum best quality carbon and nitrogen ratio.
通过摇瓶培养，研究香菇液体深层培养最适发酵培养时间、最适碳源、最适氮源及最佳碳源与氮源质量配比。
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