The Cycles of Nutrient Elements of Copper and Molybdenum and Polyhenolxidase’s Activities of Larix principis-rupprechtii
- Received Date: 1997-06-24
- Available Online: 2012-03-17
Abstract: Through studying the contents of Cu,Mo element and the activity of polyphenoloxidase of larch,we find different organs of the tree have obviously different element contents.Absorbing root has the highest Cu content(13.97mg/kg).The Lowest(3.37mg/kg)lies in the perennial branch.The biggest Mo content(17.97mg/kg)lies in the treetop,that of the perennial twig has the smallest (1.24mg/kg),furthermore,for the underground part of the tree,absorbing root(thinner than 2mm)has the highest activity of polgphenoxidase(29.33u/g).The lowest exists in the root which is wider than 10mm,but for the upper part of the tree,the order from big to small is the tree top,one year twig,two year twig,trunk,perennial twig.