Herbicide produced from 6 days solid fermentation had the highest viability,virulence and oxalic acid production,which were 64.3 mm,54.3 mm and 0.131 mg/g respectively.

• 固体发酵6天的除草菌的生活力、致病力和乙二酸产量均达到最大；分别为64.；3 mm、54