The Study On Effects Of New Bio-pesticides To Tree Canker

Tree canker is one of the important plant diseases that destroy the nonwood forest and others tree in our country.It is also called"Trees Cancer", because it is difficult to cure and recurrence rate is highly.It was infected and transmitted on the tree when growth potential weakness that was caused by extensive management or environmental deterioration.The disease always destroy orchard and tree nusery. In recent years, bio-pesticide is promoted and replaces chemical pesticide.It was becaused that people take a healthy approach to life more and more and the effect of chemical pesticide is badly. The penicillin is one kind of new plant growth regulaors in production,and penicillin is produced by Penicillium. In this paper, isolation and identification of tree canker pathogen of poplar, willow, scholar tree and plum tree.Study the correlation of enzyme activity and penicillin or in the different tree. Statistic of cure rate recurrence rate of different appletree varieties in different area after was used differdnt pesticides. Detection of residual of penicillin in the apple. The results were as follow as:1. After Curet the lesion, smear 12,000 unit sper Liter of penicillin on the tree,it can improve the activeness of POD, PPO, CAT,so improve the ability of concrescence,and the ability to check to pathogenic bectaric.2. After Curet the lesion, smear 12,000 unit sper Liter of penicillin on the tree,it can improve the activeness ofβ-1,3-glucanase and chitinase of the apple tree,so improve ability to resist to pathogenic bectaric.3. New pollution-free bio-pesticides and 12,000 unit sper Liter of penicillin is better than 40% Asomate that restrain pathogens to invade tree and promote wound healing. bio-pesticides>12,000 unit sper Liter of penicillin>fu meishen.Cure rate can reach 100% after smear new pollution-free bio-pesticides on the apple tree of"Huang Tai Ping".