Abstract
Our objective was to investigate the important biological characteristics of annual artificial planting Saussurea involucrate in low altitude region(567 m).We hope that these results can provide essential referential materials for the utilization and protection of this kind of resource.Experiment in the present research was carried out on the ecological adaptation of S.involucrate such as leaf number,leaf length,root length and single plant fresh weight of annual artificial plant in low altitude region.The characteristics of annual plant growth of S.involucrate in low altitude were that it grew slowly after being sowed 45 d,then became fast,and reached a moderate stable rate after 70 d.Its emergence rate could be improved by sowing with covered straw mat.Its growth had a great drought-enduring characteristic.Annual plant of S.involucrate could be cut twice,and its leaf length and leaf number could grow to the size of an original plant after cutting approximately in 20 d,but the plexus amplitude was significantly smaller.Its regeneration could be promoted by cutting,which was also helpful to avoid the high temperature weather and pest outbreaks.
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