Study On Fertilization Experiment And Nutrition Diagnosis Of Cinnamomum Camphora

The Cinnamomum camphora as our country's precious economic tree, had very high economic value,One-year-old cutting seedlings of Cinnamomum camphora from Xiamen Mudan Company, chosen as testing materials, and combinative design of three factors-quadratic rotations applied in this paper,the impacts of different fertilizer treatments on the growth of Cinnamomum camphora,biomass and the yield of essential oil, the linalool content in essential oil were studied;DRIS graphic methods and DRIS indices were respectively used to diagnose plant nutrition of Cinnamomum camphora, and then the order of requiring the fertilizer-N,P,and K was figured out;Combined with the results of nutrient diagnosis,providing theoretical and practical references for scientific fertilization of Acacia crassicarpa seedling.The results as followed:1.The results of significant test were reached significant level in the mathematical models of Cinnamomum camphora's biomass, height and diameter, and the results indicated that the impacts of different fertilization treatments had sinificant influence to Cinnamomum camphora's different parts growth.The regression equation established with mathematical models of Cinnamomum camphora's biomass was: Y=7.459+2.474X1-2.038X2+2.245X3-0.136X1X2-0.717X1X3-0.348X2X3+0.219X12+0.775X22-0.057X32,the optimal biomass was 29.739g, and the corresponding application of N,P,and K were:5.0g/pot, 5.0g/pot, and 0 g/pot respectively; the regression equation established with mathematical models of Cinnamomum camphora's height was: Y=20.997+5.971X1+1.083X2+4.034X3-0.451X1X2+0.134X1X3+0.167X2X3-1.185X12-0.229X22-0.872X32,the optimal biomass was 43.16cm, and the corresponding application of N,P,and K was:3.64g/pot,5.00g/pot,and 3.07g/pot respectively. the regression equation established with mathematical models of Cinnamomum camphora's diameter was:Y=4.283+0.695X1+0.495X2+0.182X3-0.003X1X2+0.019X1X3-0.035X2X3-0.12X12-0.065 X22-0.0253X32,the optimal diameter were 6.34mm, and the corresponding application of N,P,and K were:3.01g/pot,3.01g/pot,and 2.7g/pot respectively.2.The nutrients of N,P,and K in the Cinnamomum camphora were diagnosed by DRIS graphic and indices methods,the result by DRIS graphic method showed the best ratio ranges were P/N=0.1414-0.0948,K/N=0.1744-0.1530,P/K=0.8367-0.5979 respectively.The nutrients of treatment No.19 and 20 were in balance range,and The results by DRIS indices method showed that the nutrients of treatment No.15 to 20's nutrients indexes were most closer to 0, which indicated the nutrients of these treatments were relatively balanced,and the conclusion was In accordance with DRIS Graphic Method.3.The results of significant test were reached significant level in the mathematical models of Cinnamomum camphora's yield of essential oil and linalool content in essential oil, and the results indicated that the impacts of different fertilization treatments had sinificant influence to them.The regression equation established with mathematical models of Cinnamomum camphora's yield of essential oil was: Y=1.054+0.392X1-0.037X2+0.280X3+0.014X1X2-0.022X1X3+0.018X2X3-0.057X12+0.001X22-0.053X32,the optimal yield of essential oil was 2.22%, and the corresponding application of N,P,and K were: 3.52g /pot,5.0g/pot,and 2.76g g/pot respectively;the regression equation established with mathematical models of Cinnamomum camphora's linalool content in essential oil was: Y=1.054+0.392X1-0.037X2+0.280X3+0.014X1X2-0.022X1X3+0.018X2X3-0.057X12+0.001X22-0.053X32,the optimal linalool content in essential oil was 95.18%, and the corresponding application of N,P,and K were: 2.84g /pot,5.0g/pot, and 4.87 g/pot respectively.4.Cinnamomum camphora's essential oil's synthesis, the accumulation and the transformation were restricted by its heredity and the environmental conditions, the results showed that each treatments's the yield of essential oil was above 1.53%, the linalool content was above 88.35%, which indicated that the camphor tree inherit characteristics of mother tree well in fertilization experiment, however the differences were significant among the yield of essential oil and the linalool content of different treatments, indicated that fertilization experiment had sinificant influence to the yield of essential oil and the linalool content, and the suitable fertilization treatments could promote Cinnamomum camphora's oil production.