| Camellia oleifera is one of the most important characteristics of woody oil plants. In 2009 the State Council approved the implementation of the "national tea industry development planning", plans to 2020 the total size of 70000000 acres C. oleifera planting, camellia oil production reached 2500000 tons per year. The national development strategy of large-scale development of C. Oleifera requirements according to local conditions, make the soil fertility quality of C. oleifera forest evaluation work better, in order to establish C. oleifera formula fertilization by soil testing system, provide a scientific basis for the development of special fertilizer and C. oleifera. This study intends to Hunan plate shale in red soil region of high, medium, low yield of C. oleifera forest soil fertility quality evaluation work, in order to provide the basis for the comprehensive development of C. oleifera forest after the formula fertilization by soil testing.This shale in red soil area of C. oleifera forest of Shaoyang County in Hunan province typical Hunan in full fruit period of C. oleifera forest as the research object, The establishment of 11 fixed standard,28 physical and chemical properties and biological characteristics of index determination of rhizosphere and non rhizosphere soil, and to investigate the soil physical and chemical properties, characteristics, the relationship between biological yield three, screening out the minimum data evaluation in red soil region of oil shale in Hunan forest soil fertility quality set, and uses principal component analysis method and factor analysis method to evaluate the oil shale in red soil region of forest soil fertility quality. The main results are as follows:1. The available Zn content in red soil region of oil shale soil and available B content increased with the increase in production, and the content of available B was significantly correlated with yield. The available Zn content in high yield of C. oleifera forest soil was 3.120mg · kg-1, were higher 67.6% than the middle yield and were higher 45.3% than the low yield, the middle yield were higher 33.42% than the low yield; available B content of high yield in C. oleifera forest soil was 0.92 mg/kg, and were higher 24.9% than the middle yield, were higher 65.3% than low yield, the middle yield were higher 32.7% than low yield. In addition, a large number of elements (organic matter, available K, available P), middle elements (S, Mg, Ca, trace elements (Cu),CEC), the content of the biological characteristics (the content of microbial biomass C, microbial biomass N, microbial biomass P) also increase with the yield.2. There was significant difference between the content of available Zn, organic matter content of C. oleifera forest soil B content, both in the rhizosphere and non rhizosphere soil (p< 0.01); there were significant differences between the content of available K, available P content, S content were soil in rhizosphere and non rhizosphere soil (p< 0.05).3. C. oleifera forest rhizosphere soil organic matter content, effective B content, effective Zn content was significantly higher than non-rhizosphere soil (p<0.01), and the effective P, available K, available S were significantly higher than non-rhizosphere soil(p<0.05).4. C. oleifera forest soil microbial biomass P content and acid phosphatase, neutral phosphatase, total phosphatase, urease activity of C. oleifera oil production was significantly correlated significantly related to the activity of catalase and C. oleifera oil production. The correlation between invertase activity and alkaline phosphatase activity and yield were not significant And yield the most relevant indicator is the total phosphatase activity of phosphatase activity (p= 0.875), followed by acid phosphatase activity (p= 0.811); alkaline phosphatase activity associated with the lowest yields, (p= 0.761).5. Soil fungi in C. oleifera 1 Forest, was significantly associated with the number of tea production in bacteria, actinomycetes. The degree of correlation among the number of fungi and tea production> relevance of the number of bacteria and tea production> relevance of actinomycetes and tea production, the correlation coefficients were 0.728,0.621, and 0.644, respectively.6. Soil microbial biomass P content and C. oleifera oil yield significant correlation in C. oleifera forest (p=0.787), while no microbial biomass C, N content and C. oleifera oil production significantly correlate.7. Gordon plate shale soil fertility quality of red soil area C. oleifera forest minimum data set are:soil bulk density, organic matter, available P, K, effective Zn, effective B, fungi, neutral phosphatase activity.8. The use of cluster analysis, we arrive at the 8th plot, plot No.11, on the 10th plot, plot 6,7 plots, plot No.5,9 plots of soil fertility better quality No.1 Likewise, the 4th kind of fertility quality in general, on the 3rd plot, the 2nd kind of poor quality soil fertility. And significantly correlated with the tea production cluster analysis (p= 0.781).9. Rankings and C. oleifera oil yield-related factor greater extent than the main component of tea production ranking and relevance, and ranking factor and cluster analysis was significantly correlated (p= 0.625), the primary component of ranking and clustering analysis showed no significant correlation. Therefore, the use of factor analysis Camellia Forest fertility quality better. |
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