膏桐白粉病发生规律及药剂防治试验初报

膏桐白粉病是永胜县膏桐的重要病害，病菌侵染幼嫩的茎、叶、花序及果实，受害严重林分感病率为100％，病情指数高达70％．试验显示，膏桐白粉病在永胜县始发期为5月中旬至7月上旬，盛发期为7月中旬至9月下旬，末期为10月上旬至12月；有效防治药剂及使用浓度为15％三唑酮可湿性粉剂400～600倍液，29％石硫合剂水剂300～500倍液，50％多菌灵·硫磺可湿性粉剂250～1000倍液．

Preliminary Report on Experiment of Medicament Control for Oidium monilioides

Oidium monilioides is an important disease of Jatropha carcass in Yongsheng county,which pathogenic bacteria usually infect stem and leaves of tender branches,.flower order and fruits.Infected ratio of severe stand can be as high as 100% and index of disease status as 70%.The experiment reveals occurrence period of Oidium monilioides starting from middle of May to early of July,vigorous period from middle of July to end of September,final phase from early of October to December.Moreover,effective medicament...