Integrated Controlling Longhorned Beetles In The Coastal Shelterbelt In Cixi

Hangzhou Bay coastal shelterbelt is a coastal green barrier that is increasingly seriously affected from the Cerambycidae from the last few years. A study was conducted in the Cixi in Hangzhou Bay coastal to prevent its damages. On the basis of investigations and analysis, different technical approaches were used to control its damage that was comprise of different trunk injected pesticides, bio-control agents Dastarcus helophoroides and Scleroderma guanis and pheromone trapping. The results of this research were as following:(1) We collected seven kinds of Cerambycidae that belongs to three subfamilies and six genera,that were damaging the Casuarina equisetifolia L, Fraxinus chinensis Roxb, Salix babylonica L, Melia azedarach L, etc. Anoplophora glabripennis Motsch、Anoplophora chinensis Forster and Batocera horsfieldi species were dominant species.(2) Natural enemies played an effective role in controlling the Cerambycidae. Dastarcus helophoroides had strong potential to manage Cerambycidae as compare to Scleroderma guanis but no significant difference was noticed between the eggs and adults of Dastarcus helophoroides and Scleroderma guanis.(3) Five different pesticides proved harmful for the survival of Cerambycidae among them, but there were some difference.10% Imidacloprid+ Emamectin Benzoate showed high mortality up to 88%. When appreciate dosage was 1.0m L·cm-1 then mortality reached up to 90%. Autumn season was more favorable for the management of Cerambycidae.(4) The parasitoid-host with releasing eggs and adults of Dastarcus helophoroides and Scleroderma guanis number ratio1:20,1:4,1:15 were the best.(5) Releasing of adults of Dastarcus helophoroides proved beneficial to managing the Cerambycidae as compared to eggs and Scleroderma guanis in the wild. Correction reducing rate of the pest was 54.75% and 60.82% respectively in the forest of Fraxinus chinensis and Salix babylonica mixed with Fraxinus chinensis, while this rate was 22.21% in the forest of Casuarina equisetifolia. Correction reducing rate of the pest of the natural enemies was higher than others which was up to74.43%.(6) Five different insecticides showed significant difference. The F1 and X1 pheromones proved attractive, they trapped 12 and 10 longi corns, respectively. F1 and X1 pheromones showed more attraction than M99-1, A-3 and HYP-SH. But the trapping effect was not significant relative to the number of forest pest.