Distribution Pattern of Nutrient Elements and Its Relationship with Soil Environment in Different Aged Phyllostachys edulis
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Abstract
The concentrations of nitrogen,phosphorus,potassium in different organs of Phyllostachys edulis with various ages and the amount of soil nutrients and enzymatic activities were analyzed in Yongan County, Fujian Province.The results showed that the contents of two nutrition elements(nitrogen,phosphorus,calcium, magnesium)in different organs were in the order as:leaf>branch>stem>root;while for potassium:leaf>root >stem >branch.The abundance of different elements in leaf, in branch and in stem respectively ranged as:nitrogen>potassium >magnesium >calcium >phosphorus,while for root ranged as: potassium >nitrogen >magnesium>calcium>phosphorus.The nutrients element of bamboo organs varied with different ages. The nitrogen, phosphorus, calcium, and magnesium of bamboo culms and roots increased firstly, and then decreased with ages. The nitrogen, phosphorus, calcium, and magnesium of branches decreased-increased-decreased with ages. The nitrogen, phosphorus, calcium, and magnesium of leaves changed in the shape of "W". The potassium in bamboo organs decreased with ages besides the maximum contents in bamboo culms with two years. The nutrition elements in various organs of Phyllostachys edulis were interrelated one another at some extent, significant(PPPhylbstachys edulis and the phosphates in the soil, and great significant correlation between the nitrogen, phosphorus elements in leaves of Phylbstachys edulis and the catalase in the soil. The biochemical process was affected by the soil enzyme, and the degradation process of nitrogen, potassium, and phosphorus needed the activity of soil enzyme. A great significant correlation existed between soil capillary and the nitrogen elements in stems, while significant correlation between other index of physics and other index of chemistry.
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