Effects of Shading on the Growth and Physiological Respond of Menyanthes trifoliata L.
In order to understand the effect of shading on the growth and physiological respond of Menyanthes trifoliata L.and to provide suit-able habitat in Beijing area for its protection and utilization.Growth and physiological index of M.trifoliata during different periods were studied under four shading treatments,including full sunlight,50%shading,75%shading and 90%shading.The microclimatic factors were also moni-tored under same conditions.The results showed that height growth,rhizome growh and leaf area growth of M.trifoliata under 50%-90%shading treatment for 60 days during summer were significantly higher than those in full sunlight;SPAD and Fv/Fm of M.trifoliata were effectively in-creased under 50%shading,compared with CK;moderate shading could effectively reduce light intensity,daily maximum temperatures and in-crease air humidity.In conclusion,50%shading of M.trifoliata for 60-90 days in summer is the most favorable cultivation method.
国家科技期刊平台
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