Study On Occurrence Dynamic And Bait Technique Of Major Insect Pests In Maojian Tea Area Of Guzhang

Maojian tea is an advantageous and characteristic industry in Guzhang County.The occurrence of tea pests seriously affects the income increase of local tea farmers.In recent years,tea pests such as Empoasca onukii,Euproctis pseudoconspersa and Ectropis grisescens have occurred frequently in the Maojian tea production area of Guzhang,which leads to the decline of tea product quality,reduced production of tea,lower output value and decrease of tea farmers’ income.In order to explore the green control technology of insect pest in Maojian tea,the paper investigated the population dynamics of main pests,and studied the control effect of LED wind-absorbing solar energy insecticidal lamp,yellow board and Sex Attractant on the main pests.The test results are as follows:1.Through the investigation of the dynamic growth and decline of the main pests in the tea garden,the dynamic growth and decline of Ectropis grisescens,Euproctis pseudoconspersa and Empoasca onukii in Guzhang tea garden were mastered.The results showed that the adult of Ectropis grisescens was observed in late March.The harm of the Ectropis grisescens in the tea garden was investigated from late March to early May,late May and mid June to mid October.After late October,the pupae of the Ectropis grisescens overwinter.The first peak of Euproctis pseudoconspersa’ s damage appeared in the first ten days of June,the second peak in late August and the third in late October,among which the first ten days of June was the most serious.It is speculated that Euproctis pseudoconspersa occurred in the Guzhang County for three generations a year.The overwintering adult of Empoasca onukii was found in late March and two peak periods of damage occurred from late May to early November.It is speculated that Empoasca onukii occurred in Guzhang County for 10 generations in this year.2.In order to study the effect of LED solar energy insecticide lamp on Ectropis grisescens and Euproctis pseudoconspersa,the experiment of LED solar energy insecticidal lamp on the adult of Ectropis grisescens and Euproctis pseudoconspersa was carried out in the Maojian tea area of Guzhang.The results showed that led lamp had good effect on the killing of Ectropis grisescens and Euproctis pseudoconspersa,and could effectively induce the adult of Ectropis grisescens and Euproctis pseudoconspersa on the premise of killing as few beneficial organisms as possible and control the large area occurrence of Ectropis grisescens and Euproctis pseudoconspersa.The field control effect of LED insecticidal lamp to Ectropis grisescens was up to 90.9%,and 89.7% for Euproctis pseudoconspersa.In order to study the effect of yellow board on the control of Empoasca onukii,the yellow board was installed in the tea garden,and the experimental process was observed,and the trapping effect of yellow board on Empoasca onukii was analyzed.The results showed that the field control effect of yellow board to Empoasca onukii was 84.93%.It was indicated that the yellow board in the field had good control effect on the killing of Empoasca onukii,and could effectively control the harm of Empoasca onukii to tea garden.3.The killing effect of the two agents was tested by installing the insect attractant.The results showed that the population of Ectropis grisescens and Euproctis pseudoconspersa was controlled by trapping the male moth of the Ectropis grisescens and the male moth of the Euproctis pseudoconspersa.The results showed that the number of Ectropis grisescens and Euproctis pseudoconspersa was controlled effectively after the Sex Attractant was installed in the tea garden.The rate of population decline of Ectropis grisescens was 52.6%,72.7%,The rate of population decline of Euproctis pseudoconspersa was 50% and 77.8%respectively.The installation of the insect attractant can effectively kill the male moth of Ectropis grisescens and the male moth of the Euproctis pseudoconspersa,and can inhibit the population number of Ectropis grisescens and Euproctis pseudoconspersa,and control the harm of the Ectropis grisescens and Euproctis pseudoconspersa to the tea garden.