The Study On The Infant Timber Structure Of Introduced Populus Spp. Clone In Shandong Province

Poplar (Populus spp. ) annual grow cycle change, it is a kind of ecological physiology that the physiological ecology characteristics of seeds change to the environmental condition cycle of external world that is responded, it is under the influence of certain , long-term external condition, pass the metabolism function of the trees, annual cycle that form grow the law , there are obvious rhythms and phased. The poplar timber points the secondary xylem mainly, is a main products organ . The inside structure of the timber and external characteristic are besides relating to hereditary properties of the poplar, still have close relations with the acquired ecological environment that grows. So the important basis that the dissection structure of the poplar timber can be cultivated as the index , seed selection breeding and orientation of appraising the poplar material, quality.Shandong introduces a fine variety in the large province of the poplar. So, carry on timber structure research and material appraisal to Shandong poplar, to Shandong the area carries on poplars and introduces a fine variety and chooses seeds it has very important meanings that the breeding and orientation are cultivated etc.. This text adds up to 30 poplar .strains and varieties as the material for what has been gathered from Shandong (Gaomi, Rizhao ), have carried on systematic research to the timber structure of the poplar and timber structure and relation of accumulating quantity of material savings.Use and cut the method into slices and emanate the method to analyse the poplar timber differently, the result shows : The carbon wax cuts into slices and cuts the analysis suitable for the timber structure of more poplars even more into slices more than the paraffin wax in the law of cutting into slices; Difference because among the samples of the poplar that Shandong introduces a fine variety and living in the difference of the area, storage capacity of timber and molecular structure demonstrate the obvious difference . In the sample used, L. does well, the middle forest is that the number behaves worse; In two areas, Ju County is relatively high, the Gaomi city is relatively low.Dependence is analysed to indicate, to Shandong introduce a fine variety poplar last material it is at the time of the appraisals except length of fibre not wooden and the long and wide than and outside content, the length of the pipe and content are important evaluation...