Abstract:

Abstract: The paper mainly aimed at the growth of black spot disease of Araliaceae has conducted the systematic research under the different carbon and nitrogen source, grasped the most suitable carbon source for the growth of Black spot disease of Araliaceae,which was the strongest than mannitol, fructose, complete glucose, sucrose, malt sugar, lactose, starch (complete starch), dextrin. And the comparison was the most suit for the growth of pathogenic fungus, dextrin was not suitable for the growth of pathogenic fungus, pathogenic fungus can grow under other kinds of carbon sources. To the most suitable nitrogen source for the growth of black spot disease of Araliaceae was the complete protein peptone which was stronger than comparison, glutanic acid, asparagine,alanin, potassium nitrate, nitrate of soda, ammonium sulfate, ammonia water, ammonium chloride. And the complete protein peptone was the most suit for the growth of pathogenic fungus, pathogenic fungus was slow-growing under the ammonium chloride, not suited the growth of pathogenic fungus, Other various nitrogen sources suited for the growth of pathogenic fungus.