Effects Of Jinzhai Bamboo Forest Environment And Standing On Phyllostachys Pubescens Properties,shoots And Phenotypic Traits

This project takes three bamboo forests with different bamboo edulis in Qingshan Maozhu Forest of Jinzhai County as experimental plots,and takes the bamboo section up to 2 meters in the chest height of the 3-year-old bamboo as the research object.The correlation analysis of the bamboo environment and the standing with bamboo material,phenotypic traits and bamboo shoots status was analyzed by linear regression,curve fitting,principal component analysis and Pearson correlation analysis.The main findings of this paper are as follows:(1)Due to its market restrictions,the standing of Qingshan Bamboo Forest in Jinzhai County is generally high.The soil in the bamboo forest is weakly acidic.The high content of P,K and S provides abundant nutrients for the growth of bamboo.Among the trace elements in the soil,the zinc content is the highest and the molybdenum content is the lowest.In the three forests with different standing degrees,the plot with the bamboo level is at a medium level and the soil porosity is the largest.It may be most beneficial to the absorption of nutrients and growth by the roots of bamboo.(2)The content of lignin,hemicellulose and a-cellulose decreased with the increase of bamboo stand,and the ash content decreased first and then increased with the increase of standing bamboo.The content of ethanol and phenyl alcohol extracts On the contrary,the shrinkage rate of bamboo is the smallest in the plot 2,and the compressive strength of the grain gradually increases with the increase of the bamboo.The a-cellulose content,the ethanolic cellulose content,the phenyl alcohol extract content,the lignin content and the total dry axial shrinkage rate were significantly affected by the bamboo forest water environmental factors;The content of phenyl alcohol extract was linearly correlated with the average minimum temperature and the fitting equation was significant.The lignin content and a-cellulose content showed a significant or extremely significant quadratic linear correlation with the average temperature difference;Soil total nitrogen content,pH and available phosphorus content have certain effects on the content of lignin,hemicellulose,ash,ethanolic cellulose and alpha cellulose.The main effect on the physical properties of bamboo is the available P and available K in soil.The content of available P in soil has a significant or extremely significant effect on the mechanical properties of bamboo.(3)Among the bamboo forests with high bamboo standing,the bamboo shoots have higher yields;the height of the bamboos will increase with the increase of bamboo standing,the difference is extremely significant,There is a significant strong negative correlation between the number of lower branches and the available potassium.