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
NSTL
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