Research On The Status And Protection Of Ancient Tree Resources In Quzhou City

Ancient trees are the witness of a long history,but also a symbol of social civilization.The precious species genes in ancient trees play an important role in the whole biosphere,and are closely related to the sustainable development of human society.The trees are precious wealth of our history,ancient trees are living relics,the witness of history;is an important tourist resources;is an important research in archives of historical climate;it is important to study the local cultural history;has important scientific value in plant geography;the local tree species planning,have great reference value;healthy trees itself has important ecological value.Ancient trees witness the changes of human social environment and history,bearing the historical,cultural and environmental information,is not renewable,irreplaceable living relics.Based on the investigation of the Quzhou existing urban tree resources,species,quantity,distribution,status,growth of urban trees harm the growth of trees main pests such as the one by one from the detailed investigation of the adverse growth trees corrective measures;the main pest prevention measures two aspects of protection.After investigation,the existing urban Quzhou 17 species,the 85 strains.Through the analysis,affect the healthy growth of trees has two main aspects: one is the influence of the underground part of the ancient roots of granite paving is prominent,ground hardening,and even some old roots arch,affected trees root respiration,root permeability,two is on the part of the influence,especially obvious diseases and insect pests that is the most ancient camphor camphor orthagaachatinabutler harmful main defoliator,affect the growth of trees,old trees landscape effect;histia Rhodope Cramer is one of the most important ancient Bischofia on defoliators,due to the large amount of leaf eating pests,seriously affected the growth of old trees,old trees of health.In view of the influence of the two main aspects of the growth of trees,the main protection measures are: one is for the growth of trees of different space,living situation,take to clean up the old trees roots of hard granite paving,impermeable cement mortar,compacted soil,gravel laying wooden platform,set up,set the drainage ditch,increase the drainage capacity the roots of the trees,increase permeability.The two is through the investigation,sorting out the effects of main diseases and insect pests in Quzhou city and the growth of trees,and carry out drug test,screening out the best pesticide for prevention of camphor orthagaachatinabutler 0.18% biological pesticide sendebao wettable powder,screening of several drugs in preventing histia Rhodope Cramer effect: 1% emamectin benzoate,0.18% Sen to Paul WP,77.5% dichlorvos EC;screening in control of root rot of Ginkgo best medicine for fenaminosulf.