Investigation Of Pest Species And Research On Main Pests Green Control Technology Of Zingiber Officinale In Laiwu

As one of the main economic crops in Laiwu District,Jinan City,ginger plays an irreplaceable role in agricultural production.With the adjustment of the planting industry structure and the change of farming methods,the main types and dynamics of ginger pests have undergone corresponding changes.In order to clarify the occurrence of the main pests in ginger fields and formulate pest control methods that are easy for ginger farmers to master,the main ginger pests and their occurrence were investigated in Laiwu District in 2019,based on the results of the 2019 survey,the green control technology of major ginger pests was studied in 2020.The results of the study are as follows:From April 2019 to October 2019,a survey of ginger pests in Laiwu area found 27 species of pests,belonging to 6 orders and 15 families,mainly Lepidoptera,Coleoptera,Hemiptera,etc.Among them,the main pests of ginger are mostly Lepidoptera pests.According to their feeding characteristics,they can be divided into 4 families and 10 species of leaf-eating pests,2 families and 3 species of boring pests,3 families and 3 species of piercing-sucking pests,and 6 families and 11 species of underground pests.The investigation found 3 orders,4 families and 5 natural enemies.The comparison of the control effects of the two main ginger pests,Corn borer(Ostrinia furnacalis)and beet armyworm(Spodoptera exigua)by 4 green control technologies,showed that the average control effect of biological pesticides(86.35%,14 days after application)>sex attractants(69.16%))>frequency-vibration insecticidal lamp(58.59%)> high-position shed-type shading net(56.06%).The population reduction rates of corn borer and beet armyworm in the frequency-vibration insecticidal lamp control area were 67.74% and 62.5%,respectively.The reduction rates of corn borer and beet armyworm in the sex attractant control area were 81.66% and 75.76%,respectively.It can be seen that the attracting effect of sex attractant is obviously better than that of insecticidal lamp.One day after the application of 4 kinds of biological pesticides,5% spinosad suspension SC 2000 times liquid and 5% lufenuron EC 1000 times liquid and 0.5% matrine water AS 500 times liquid and Compared with Bt suspension SC(8000 IU/μl)300 times liquid,it has fast drug effect and high control effect.Seven days after the application,the four biological pesticides had significant control effects on corn borer and beet armyworm.14 days after the medicine,the control effect against corn borer and beet armyworm was 74% or more.It shows that these four biological preparations have long-lasting efficacy,are safe to ginger.In the three green control areas of insecticidal lamps,sex attractants and biological pesticides,the ratio of the number of trapped and killed insects to the beneficial insects is1:39.1,1:90.9,and 1:37 respectively.Compared with conventional chemical prevention and control,green prevention and control technologies can protect natural enemies,can replace conventional chemical prevention and control,and be used in the ginger production process to improve the quality of ginger and promote quality and efficiency.