Effect of degrading bacterium HN36 on ultrastructure of flue-cured tobacco stem and leaves under quinclorac stress Effect of quinclorac on soil microbial community structure under culture conditions Control of herbicide resistant Echinochloacrusgalli indirect-seeded rice crops Effects of different doses of bensulfuron-methyl·butachlor and quinclorac on the growing environment and nutrient accumulation of Chinese milk vetch Dynamic analysis of peroxidase activity in tobacco leaf induced by quinclorac