Study On The Effects Of Balanced Soil Nutrients Spatial Variation And The Diagnose Methods Of Leaves Nutrient Elements In Bambusa Rigida

This paper is about nutrient spatial nonstationarity,leaf nutrient concentration and contents,soil nutrient characteristic and contents,and biomass indicators of various degrees of bamboo in DaTianXiang of Kan-Hsien in Gan Zhou,Jiangxi.It is the first time to study spatial variation of soil nutrient and leaves nutrient diagnose in Bambusa rigida forest.The major achievement as follows:1.Through features analysis of soil nutrient spatial variation of Kan-Hsien in Bambusa rigida forest,the principal conclusions as follows:①Soil nutrient of Bambusa rigida forest divided into two categories, and available Iron,Zinc are the deflection of the mobilized elements,available phosphorus value respectively 5.03%-5.69%,and other nutrient elements are not deflected from its course.②The soil nutrient content change larger spectrum,variable factor in 4.69%-43.65% of the weak,variability,or medium variability.③The county Bambusa rigida several soil nutrient structure variance C/(C0+C),from high to low sort is as follows:total N= total P= total K>available K> available Mn> available Zn> available N> OM> available Fe> pH> available Cu> available P.④Soil nutrient of Bambusa rigida forest in Kan-Hsien exist semi-corresponding variance structure.Their best fitting model is Exponential model.⑤From spatial distribution pattern of soil nutrient,there is a large spatial variation in DaTianXiang of Kan-Hsien,relatively scarce,especially alkali-hydro nitrogen content in extremely lacking state.2. The reseach on Diagnosis and Recommendation Integrated of leaves Nutrient elements in Bambusa rigida:①According to DRIS method,using the result that six plots of three samples obtained fertilizer processing the growth and leaf N,P,K nutrient content in Bambusa rigida forest in Kan-Hsien 2010.By 1 280kg per hectare per year for the line,divided into high and Low production group,calculated from the high yield group DRIS diagnostic parameters.Use DRIS nutrient index calculation formula of Bambusa rigida forest in Kan-Hsien.Test out the county samples N, P, K, and the index of the nutrient content analysis obtains each order requiring fertilizer,so as to obtain the result of Bambusa rigida leaves nutrient diagnosis.②Vector analysis results show that:the supply of rapidly-available potassium and available phosphorus are both lack,and there are the main influence factors that limited the growth of Bambusa rigida.③The diagnosis result consistent with actual situation and there are feasible.But the four methods are all have their pluses and minuses.3.Effects of diefferent fertilizer treatments on aboveground biomassfor Bambusa rigida:Different fertilizer for aboveground biomass of Bambusa rigida the influence of the different fertilizer:handling various degrees made of bamboo and bamboo influence to fertilize:from high to low arrangement is:slag fertilizer 2,the bamboo special fertilizer 2,slag fertilizer 1,the bamboo special fertilizer 1,complex fertilizer and non-fertilization.