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 inter row 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。
2
In accordance with the difficult problem that it is difficult to discover the amount of sowing exceed the limit when rice drill is sowing, a detector system for rice drill is designed.