Studies On Tobacco Diseases And Insect Pests Prevention And Contrl Technology In XiangXi

To reduce tobacco plant diseases and insect pests damage, in xiangxi autonomous prefecture in 2013 launched the tobacco plant diseases and insect pests prevention and control technology research projects.For the project on the plant diseases and insect pests forecasting, XQ bacterial wilt bio-control bacteria experiment and demonstration,12% a-hydroxy fish Teng ketone smoke prevention and control of aphid test.The results are as follows:(1) There are two Suggestions for the entire province plant diseases and insect pests forecasting, dragon and phoenix respectively. According to the hunan province tobacco plant diseases and insect pests forecasting measures for the administration of the specific requirements, two CeBaoDian explains the main tobacco plant diseases and insect pests forecasting, the pest control has played a key role to guide, to effectively control the occurrence of the diseases and insect pests.(2) To screen effective prevention, pesticides in K326 varieties tested, five agents (bio-control bacteria) was studied the effect of tobacco bacterial wilt.The results showed that 52% of chlorine in bromine cyanuric acid. Copper sulfate soluble powder 750 times liquid of tobacco bacterial wilt control effect is best,50 days after applying pesticide control effect of 53.0%;Bromine chloride cyanuric acid. The higher the concentration of cupric sulfate, the greater the control effect.(3) The tobacco field efficacy through contrastive experiments in Dao Er townships Jie Xi village 800 times diluted XQ biocontrol agents, streptomycin diluted 1000 times and not use any chemicals. The results show that Streptomycin biocontrol agent is more better than Agricultural streptomycin, now in use. The XQ Biocontrol Agents can reduce the probability of infection of tobacco bacterial wilt significantly, and reduce the incidence of symptoms, can effectively improve the yield,output value of tobacco.(4) The control effect of new neonicotinoid insecticide acetamiprid 5% 1000 times liquid of Myzus persicae ideal, fast and lasting effect, spraying 3,6,9 days after the control effect was more than 90%, were superior to the control drug 12a-hydroxy rotenone 1000 times liquid. The test of 10%12a-hydroxy rotenone 1000 times liquid has a certain effect on the treatment of Myzus persicae, but the ideal control effect than 5% acetamiprid 1000 times liquid of Myzus persicae.