The Toxicity and Forest Control Effect of Several Non Pollution Chemicals on Larch Sheath Moth
To screen out ideal types and concentrations of pesticides, and explore new ideas for the regulation and scientific con-trol of the population of larch sheath moth. [ Method] Four different pollution-free pesticides were used to determine the toxicity of larch sheath moth larvae, and two pesticides and one smoke agent were used for forest control experiments. [ Result] The average corrected mortality rates of 2000 fold solution, 3000 fold solution, and 5000 fold solution of 25％ pyrethroid wettable powder were 89.43％, 76.45％, and 64.91％, respectively;the average corrected mortality rates for 500 fold, 1000 fold, and 2000 fold solutions of 5％ imidacloprid emulsion were 96.32％, 84.14％, and 71.16％, respectively;the average corrected mortality rates of 500 fold solution, 1000 fold solution, and 1500 fold solution of 0.5％ matrine aqueous solution were 92.79％, 86.06％, and 77.41％, respectively;the average corrected mortality rates for 2500 fold solu-tion, 5000 fold solution, and 10000 fold solution of 5％ high chloride · methylvitamin salt were 80.29％, 94.23％ and 75.96％, respective-ly. [Conclusion] Imidacloprid 500 fold solution, matrine 500 fold solution, and high chloride · methylvitamin salt 5000 fold solution all have a mortality rate of over 90％ for the larch sheath moth. The 5000 fold solution of pyrethroid has the least significant toxic effect on the larch sheath moth. The results of forest control experiment showed that the control effects of ground spray with 0.5％ matrine and 5％ imidacloprid EC 500 times liquid reached 71.18％ and 67.37％ respectively;the smoke control effect of 1.2％ matrine smoke agent on larch sheath moth larvae is 55.10％, and the control effect is not ideal. Therefore, it is necessary to explore the use of this smoke agent to control adults.
Pollution-free pesticidesLarch sheath mothToxicity testingTobacco agentPrevention and control
万方数据
维普
