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Study of Integrated management Techniques of Maize Rough Dwarf Disease and Its Extension

Study of Integrated Management Techniques of Maize Rough Dwa...

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中国植物病理学会第九届全国会员代表大会暨2010年学术年会

作者： Wang Hua-di~1,Wang Di~2,Zhu Xiao-xiang~3,Wang Ai-juan~4,Zhao~5, TENG Chun Qian~6,Yang Lian Wei~7 (1.plant protection and Quarantine Bureau of Zhejiang Province,hangzhou 310020 2.Soil and Fertilizer plant protection station in hangzhou,hangzhou 310020 3.Lin’an City Bureau of Agriculture Promotion Center, Lin ’an 311300,China 4.hangzhou yuhang district agricultural ecology and plant protection and management of the total station,hangzhou 311100 5.Tonglu County agricultural Technology Promotion Center,Tonglu 311 500 6.Chun’an County Soil and Fertilizer plant protection station,Chun 311700 7.Tiantai County plant protection station,the roof 317200)

Through collaborative researches in 2008～2009,on the base of occurrence of maize rough dwarf disease and small brown planthopper,and resistant varieties and prevention of maize,we proposed the strategy"cut off the virus source,pest control and disease prevention,integrated control".Based on extension of the resistant varieties and planting period,combined the comprehensive control measures of the key that pest disease control at seedling,the epidemic of the maize rough dwarf disease was controlled effectively,which achieved remarkable economic and social benefits.

关键词： Maize rough dwarf disease Prevention and control strategy Integrated control techniques Application

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Preliminary Investigation on Host plants and Incidence of Maize Rough Dwarf Disease

Preliminary Investigation on Host Plants and Incidence of Ma...

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中国植物病理学会2011年学术年会

作者： Wang Ai-juan~1,Wang Hua-di~2,Teng Chunqian~3,Wang Guo-di~4,Yang Lian-wei~5 (1.General station of agricultural Ecological management and plant protection of yuhang district, Zhejiang Province,yuhang 311100 2.Zhejiang Provincial station of plant protection and plant Quarantine,hangzhou,310020 3.Agriculture Bureau of Chunan County,Zhejiang Province,Chunan, 311700 4.General station of plant protection and Soil and Fertilizer of hangzhou City,hangzhou 310020 5.Tiantai station of plant protection,Tiantai 317200)

＜正＞Maize rough dwarf disease,is a serious viral disease transmitted by small brown planthoppers（SBPH）（Laodelphax striatellus）.In recent years,the disease outbreak and is very prevalent in maize growing areas in the northwest Zhejiang because of many complexed factors,including changes in farming and cultivation system,the accumulation of virus sources and insects,decreased disease resistance of varieties,and climatic conditions and some other *** these areas,the epidemic with a disease incidence of 20%～60% in general resulted in great losses of corn yield（up to 20%～30%）.in some serious area, even no *** order to explore the basic mechanism of occurrence and prevalence of MRDD and to provide the technology for disease *** and control,we investigated on the main host plants and incidence of MRDD during 2009～2010. Observations showed that at the early stage of *** dashed-line-like spots first occurred along both sides of midrib on the base of heart leaf and then gradually expanded across the *** waxy-streaked swellings along the veins on the underside of the leaf blades,leaf sheaths and bracts were rough to *** of infected plants became short and wide,darkening green,thick and rigid,and clustered *** growth and development of infected plants were inhibited,including swollen and shortened nodes, pronounced dwarfing,and few and short roots（less than half of the healthy plants and easy to pull up from the soil）.Infected plants with mild symptoms showed that dysplastic tassel shedding fewer pollen grains and short ears containing fewer filaments,resulted in fewer corn *** plants with sever symptoms could not tassel out or a few of branches could tassel out but shed no pollen grains;dysplastic ears became sterile or fewer fertile. Investigation on the disease and SBPH showed that rice,barley,wheat,maize,millet, sorghum,Alopecurus,Poa grasses,barnyardgrass,crabgrass,semen euphorbiae,Setaria, Cynod

关键词： maize rough dwarf disease(MRDD) symptoms host plant susceptible period

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Investigational Study of Epidemiological Factors of Maize Rough Dwarf Disease

Investigational Study of Epidemiological Factors of Maize Ro...

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中国植物病理学会第九届全国会员代表大会暨2010年学术年会

作者： Wang Huadi~1,Hu Wu-yi~2,Wang Guo-di~3,Zhu Xiao-xiang~4,Teng Chun Qian~2,Wang Ai-juan~5 (1.plant protection and Quarantine Bureau of Zhejiang Province,hangzhou 310020 2.Chun’an County Soil and Fertilizer station of plant protection,Chun’an 311700.hangzhou Soil and Fertilizer plant protection,Zhejiang Province,hangzhou 310020 4.Zhejiang Lin’an City agricultural Technology Promotion Center,Lin’an 311300 5.hangzhou yuhang district plant protection and management of agro-ecological station,hangzhou 311100)

Zhejiang control of maize rough dwarf research group’s collaboration research in 1988-1989 indicated that maize rough dwarf disease epidemic have a certain relationship with the small brown planthopper population dynamics,maize sowing,leaf age,cultivar resistance and rice factors during development of maize,which is the main basis for disease *** results provide a scientific basis for the formulation of maize rough dwarf disease prediction method and monitoring and forecasting with the control of maize rough dwarf.

关键词： Maize rough dwarf disease Factors affecting occurrence of Survey

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