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《Acta Agrestia Sinica》 2007-02
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Effect of Water Stress on the Growth and Biomass Characteristics of Amur Silvergrass at the Elongation Stage

HUANG Ping1,ZUO Hai-tao2*,HAN Lie-bao1,WU Ju-ying2 (1.Turfgrass Institute of Beijing Forestry University,Beijing 100083,China; 2.Beijing Research and Development Center for Grass and Environment,Beijing 100097,China)  
The effects of soil water content on the growth and biomass characteristics of amur silvergrass(Miscanthus sacchariflorus(Maxim.) Benth.) at the elongation stage were studied.The experiment was conducted with the grass grown in plastic pots of varying soil relative water contents(RWC: 80%,60%,and 40%) under greenhouse conditions.The results are as follows: the growth of amur silvergrass was truly affected by soil water content,though the biomass growth was not severely stunted under light water stress(RWC60%),it was tremendously hindered by severe water stress(RWC40%)(P0.05).Along with the decreased soil water content,the proportion of the underground biomass and the ratio of root to shoot increased significantly.There were significant effects of soil water content on the biomass characteristics of Miscanthus.The volatile content dropped while the ash content increased,following the decrease of soil water content.The concentrations of potassium and chlorine in stems and leaves had a negative relationship with the soil water content,but sulfur and silicon had a positive one with it.
【Fund】: 北京市科委国际科技合作项目“能源草种植及应用技术示范研究”
【CateGory Index】: Q945.78
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