Effect of Light Intensity on Morphological Characteristic and Growth Index of Trifolium repens L.cv.‘Longping No.1’
The objectives of the study were to find out the effects of light intensity on morphological characteristics and growth index of Trifolium repensL, cv.‘Longping No.1’, and to provide a theoretical basis in rational use of its resources under different shade places.Leaf area, leaf area index, absolute ex pansion rate of leaf area, plant height, biomass, root to shoot ration of Trifolium repens L.cv.‘Long ping No.1' were tested in different shade conditions.The results showed that lighter shade significantly increased leaf area, leaf area index and absolute expansion rate of Trifolium repens L.cv.‘Longping No.1’, but severe shade played an inhibitory effect on these index.Specific leaf weight increased with the increase of light intensity.Shade had a significant effect on the biomass of Trifolium repens L.cv.‘Longping No.1’,moderate shade promoted its growth, but excessive shade inhibited its growth.Trifolium repens L.cv.‘Longping No.1’had some shade tolerance and grew well under about 30% shadeenvi ronment.