Investigation And Controlling On Diseases And Insect Pests Occurring In Garden Plant In Handan City

With the speeding up of urbanization process,the rhythm of the botanical garden afforestation construction speeds up further in Handan.The introduction of a large number of varieties of newplants makes the original plant community structure change,makes the original ecological environment change,which provides a certain condition for the occurrence of plant diseases and insect pests.At thesame time,due to the change of climate,improper maintenance management measures,etc,the plant diseases and insect pests occurred frequently.In order to find out soon the species of garden plant diseases and insect pests,regularity of occurrence and habits in Handan,and grasp the prevention and curing techniques,control the occurrence of pest and disease spread effectively,improve the effect of forestation and beautification.This article made a detailed investigation on the occurrence species of garden plant diseases and insect pets in Handan by taking the measures of field general survey,key point invetigation and sampling survey to make a detailed investigation.And on the basis of referring to a large number of relevant literatures at home and abroad,it made field test on the occurrence regularity and the prevention and curing techniques of Handan's main garden plant diseases and insect pests.The main result is as follow:1.On the research of the species of urban garden plant diseases and insect pests in Handan,we find that there are 92 kinds of common garden plant diseases and insect pests in Handan city,which contains 59 kinds of insectinsec pests and 33 kinds of diseases.There are 5 diseases which occurred frequently and harmed a lot,such us,Crape myrtle powdery mildew,Myrtle sooty,Euonymus powdery mildew,Tau gummosis,Cedrus Dry needle disease.And there are also 9 kinds of insect pets occured frequently and harmed a lot,such us,Macrosiphum rosivorum Zhang,Eriococcus legerstroemiae,Anoplophora glabripennis,Periphyllus koelreuteria,Tetranychus cinnbarinus,Megachile nipponica,Fraxinus pennsylvanica Marsh,Grubs.2.Regarding the 14 kinds of diseases and insect pests which occurred seriously,such us,Euonymus powdery mildew,Myrtle sooty,Periphyllus koelreuteria,Anoplophora glabripennis,Grubs,etc,We made a detailed investigation and analyzed the occurred reasons and regular,the best time and measures of prevention.3.It is the first time to find the intrusion of Fraxinus pennsylvanica Marsh Handan city,and grasp the occurred place and harmed conditions.The distinction features:small,coved by the white wax threads,the length of the wingless and winged single female Aphids on the Green ash are less than 3mm,most of them are shorter than 2.1mm,and the majority of the Aphids are wingless.The Fraxinus pennsylvanica Marsh grow up rapidly,and breed a lot,once it occurred,it harms seriously.Once injured by Fraxinus pennsylvanica Marsh the leaves of the tree get rolled and pendent,which influenced the effect of landscape a lot.4.For the Euonymus powdery mildew,we made a non-pollution control research.The result shows that: 70% Mancozeb is effective on the prevention and cure of Euonymus powdery mildew.Trapping aphids by yellow board can effectively delay the occurrence of insect pests for 5-10 days.Screening of higher effective and lower toxic pesticide gets that imidacloprid is the most effective way to treat aphids.In the new biological pesticide,arrogant blue 0.5% Martine gets better effect on the long-term prevention and cure of aphids.