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目的:探索不同光照环境下槲蕨的光合作用日变化,为槲蕨的人工栽培提供理论依据。方法:利用Li-6400便携式光合测定系统测定槲蕨的光合作用日变化,并对影响其光合作用的生理因子和环境因子进行相关性分析。结果:槲蕨的净光合速率日变化呈单峰曲线,最大值出现在15∶30,日均净光合速率以树附生环境的槲蕨最高,其次是阳生环境,阴生环境的最低,对光环境的适应性较强;瞬时水分利用率与净光合速率呈极显著正相关,大气温度、CO2浓度和相对湿度是槲蕨净光合速率的主要环境影响因子。结论:人工栽培时以控制气温为32℃左右,空气相对湿度40%左右,适当遮荫最适宜。
Objective: To explore the diurnal changes of photosynthesis of Tricholoma matsutake under different light conditions, and to provide a theoretical basis for the artificial cultivation of Tricholoma matsutake. Methods: The diurnal variation of photosynthesis of Tricholoma matsutake was determined by Li-6400 portable photosynthesis system, and the correlation analysis was made between the physiological and environmental factors affecting its photosynthesis. Results: The diurnal variation of Net photosynthetic rate of Quercus mongolicum showed a single peak curve with the maximum at 15:30. The daily net net photosynthetic rate was the highest in Quercus mongolica, followed by the Yangsheng environment and the lowest in the shade environment. There was a significant positive correlation between instantaneous water use efficiency and net photosynthetic rate. Atmospheric temperature, CO2 concentration and relative humidity were the main environmental factors affecting the net photosynthetic rate of Quedus. Conclusion: Artificial cultivation to control the temperature of about 32 ℃, the relative humidity of about 40% of air, proper shade the most appropriate.