A chemical controlling suitable period weeds in soybean field is simulated based on pixel histogram method to determine centor row width of crop-row and to recognize inter-row weeds.
Manual weeding weeding time. About 7 to 10 days after sowing, seedling emergence, seedling emergence and attention should be paid to control weeds, drill can be interrow weeds.
除草及时进行人工除草。播后约7 ~ 10天出苗，出苗前后应注意防治杂草，条播者可进行行间中耕除草。
3
inter have now failed to win in nine serie a matches and have lost their last four in a row.