The Comparison Research Of The Content Of Nutrient Elements With Larix Kaempferi In Different Areas

In recent years, people pay attention to Larix kaempferi because of its ability adapt to the environment, cold resistance, excellent material and many other advantages. Larix kaempferi photosynthesis, growth and development status, family selection are studied, but the content of nutrient research report for the Larix kaempferi has not been seen. We selected nine different places Larix kaempferi in the latitude to carry on the leaf blade carbon, the nitrogen, the phosphorus, the potassium element determination analysis from high to low, Simultaneously has also carried on the related determination to its correspondence’s soil nutrient content, and has made the investigation for their precipitation and average temperature each year. analying their latitude, with the elevation of the change rule and environmental factor, the relationship between the leaf properties and combined with the relevant analysis, discovers the change rule and the influencing factors of the Larix kaempferi nutritive elements content.Through the analysis of the results we can get these following conclusions;1. The content of carbon, nitrogen, phosphor, kalium in Larix kaempferi’s, leaf range of variation respectively is469.65～513.17g/kg,14.83～34.52g/kg,1.15～3.42g/kg and2.05～4.55g/kg. Arithmetic average value respectively is486.72±7.71g/kg,21.46±3.74g/kg,2.06±0.45g/kg and3.09±0.61g/kg. Comparison to the size of the leaf nutrient content is carbon> nitrogen> kalium> phosphor, carbon, nitrogen, phosphor in the whole leaf is about237:10:1. carbon/nitrogen, carbon/phosphor, nitrogen/phosphor in Larix kaempferi’s leaf range of variation respectively is13.89～33.27,141.99～433.18and5.85～22.87. Arithmetic average value respectively is23.33±3.87,248.42±56.65and10.98±3.31.The pH value in soil is between4and7, the rule was not obvious, belongs to slight acid soil, Suitable for the growth and development of the Larix kaempferi.2. As the temperature reduced gradually, phosphorus reduced gradually, leaf nitrogen and phosphorus is the ratio of the rising trend, precipitation reduced with the rise of latitude, phosphorus content is also a downward trend. The change of rainfall and temperature absorb the ability of the plants to have more phosphorus influence.3. Compare the different regions of leaf and soil content, we found that the content of nutrient elements in the leaves changed regularily with the rise of latitude, but it’s not prominent. Carbon and nitrogen content in blade and carbon and nitrogen content in soil is no significant correlation. But carbon in leaf and nitrogen in leaf is similar with carbon in soil and nitrogen in soil. Phosphor, kalium in leaf and the content of available phosphorus and rapidly available kalium showed a highly significant correlation. Carbon and nitrogen in leaf with carbon and nitrogen in soil showed negative Correlation. Nitrogen and phosphor in leaf showed an increasing trend with increasing latitude.4. Leaves carbon content rise with the rise of the elevation in low altitude area in Hubei, decreased with the rise of the elevation after an altitude of1640m, carbon and nitrogen in leaf rise with the rise of the elevation between1260and1470m, decreased with the rise of the elevation after1470m, Soil carbon and nitrogen should have similar variation, rise with the rise of the elevation in general.5. Relevant analysis of Larix kaempferi’s leaf and soil, we found that:content of carbon and nitrogen in leaf, content of carbon and nitrogen in soil has no significant relevant. Content of phosphor and kalium in leaf is related with total phosphorus and total potassium and is related with content of effective phosphorus and fast-acting potassium; SLA and carbon content in leaf assumes is remarkable being related, with content of nitrogen assumes the remarkable inverse correlation, Leaf area and nitrogen content a significant negative correlation; Rainfall amount, relative humidity with content of nitrogen in leaf assumes the remarkable inverse correlation, with content of carbon in leaf is remarkable being related.