Efficacy of two mixing herbicides on weeds in direct seeding paddy fields
[Ojbective]Weeds are the key factor restricting the production of direct seeding rice.The efficacy of two mixing herbicides on weeds in direct seeding paddy fields are studied to find practical technology for weed control in direct seeding paddy fields.[Method]The efficacy of two mixing herbicides on weeds in direct seeding paddy fields were tested in Nanchang in 2023.[Result]Results showed that the plant efficacies of quinclorac-bispyribac-sodium 27.5%SC at 247.50～330.00 g/hm2 were 89.32%～96.87%on Echinochloa crusgalli,Monochoria vaginalis and Cyperus difformis at 15 d after the application,and the plant and fresh weight effects at 30 d after the application were 87.83%～95.82%and 89.30%～96.45%,respectively.The plant efficacies of bensulfuron-methyl-pretilachlor 30%OD at 360.00～540.00 g/hm2 were 89.32%～96.87%at 15 d after the application,and the plant and fresh weight effects at 30 d after the application were 92.46%～99.19%and 94.09%～99.41%,respectively.They were significantly higher than artificial weeding or not significantly different from artificial weeding,and were safe for rice growth.[Conclusion]These two mixing herbicides are suitable for weed control in direct seeding paddy fields.
万方数据
维普
