Investigation And Control Of Pests In The Wine Grape In Changli

This paper investigated the main pests species of the wine grape in Changli,determined the prevention and treatment of critical period.The occurrences of Plasmopara viticola and Apolygus lucorum were monitored and tested.Finally,the biological characteristics and prevention of Physosmaradgina nigrifrons were studied.The main results as follows:1.There were 17 main diseases of the wine grape in Changli,some were more serious,including Plasmopara viticola,Sphaceloma ampelium,Alternaria viticola,Botrytis cinerea,Colletortrichum gloeosporiodes,Uncinula necator,Botryosphaeria dothidda,Fruit cracking,etc.19 species of pests in total,9 species were more serious,including Apolygus lucorum,Lycorma delicatula,Colomerus vitis,Brevipoalpus lewisi,Protaetia brevitarsis,Erythroneura apicalis,Arboridia koreacola,Arnpelophaga rubiginosa and Prodenia litura.2.Spore trapper was used to catch spores of Plasmopara viticola.Sporangium dispersal peaked in August to September.Spore dispersion was affected by meteorological factors,the temperature had reached highly significant.Low temperature and humid conditions were beneficial to the disease.80% mancozeb WP,50% dimethomorph WP and 25% azoxystrobin SC were used in test to control Plasmopara viticola,the results showed that 50% dimethomorph WP was superior to other medicaments,and 2000 times solution was significantly higher than other concentration gradient.3.The occurrence dynamics of Apolygus lucorum were monitored by sex attractants.Occurrence dynamics were closely related to meteorological factors.Large quantities of Apolygus lucorum were happened in germination-frondesce stage,it appeared to be a small peak at the end of August.The monitoring and control should be focused at the early stage of growth and the near maturity stage.Apolygus lucorum tended to yellow,yellow trap could reach a better trapping effect.10% imidacloprid WP,4.5% beta cypermethrin EC and 1.8% avermectin EC were used in test to control Apolygus lucorum,the results showed that the control effect of 1.8% avermectin EC 2500 ~ 3500 times solution was the most significant.4.The morphological characteristics,living habits and occurrence law of Smaragdina nigrifrons were preliminarily mastered.The adult usually appeared in August to September,they frequently activated in 8:00~11:00 and 15:00~18:00,the other times basically hided inactive.They were generally located at the top tip,the stem base,or the edge of the orchard ridge in the vineyard.It was the first time found Smaragdina nigrifrons in the vineyard in Changli.Yellow plate had effect on trap and attract them together,which could be used to monitor and control the insect.