Investigation and analysis of pests in the main marigold planting areas of Qujing and Mengzi in Yunnan
In recent years,the scale of single cultivation of marigolds in China has been expanding,and the occurrence of pests has become more and more serious,seriously affecting the yield and quality of marigold,and has caused serious economic losses.Regarding the investigation of marigold pests,previous reports were mostly concentrated in Jilin,Hainan,Heilongjiang,Guizhou,Gansu,Shanxi and other places,and there was a lack of systematic investigation of pests in the main production areas of marigold in Yunnan.Therefore,this study conducted pest system investigation in the largest marigold planting area in China and the marigold planting area with the highest lutein content in the past two years,namely Zhanyi district of Qujing city and Lengquan town of Mengzi city.It was found that the main diseases of marigold in Qujing area were brown spot disease and wilt disease.The main insects included 10 species,such as Liriomyza sativae,Spodoptera litura and Helicoverpa armigera.The main weeds included 19 species,such as Galinsoga quadriradiata,Bidens pilosa,Digitaria sanguinalis and Acroglochin persicarioides.The main diseases of marigold in Mengzi area are brown spot and anthracnose.The main insects included nine species,such as L.sativae,Monolepta signata and H.armigera.The main weeds included 13 species,such as G.quadriradiata,D.sanguinalis,Polygonum nepalense and Fagopyrum gracilipes.
万方数据
维普
