水稻直播田抗药性杂草防控技术探讨

田间试验表明,采用"一封一杀"的动态防治模式,以"封闭为主,茎叶喷雾为辅"的防治策略较为符合浙中稻区水稻直播田生产用药实际."一封一杀"是指播后芽前每667 m2用30％丙草胺EC100 mL进行土壤封闭,苗后杂草用300 g/L丙草胺EC100 mL+3％氯氟吡啶酯OD 53.3 mL、13％氰氟·氯氟吡啶酯EC 8...

Discussion on the Prevention and Control Technology of Drug-resistant Weeds in Direct-Seeded Rice Fields

Field experiments showed that, adopting the management strategy of “one close and one kill” dynamic control mode, rely mainly on soil closuring while stem-leaf spraying is more in line with the actual production and application of pesticides in direct-seeded rice fields in the mid-Zhejiang rice area. “one close and one kill” means that 30% Preitochlor EC100 mL every 667 m² is used for soil closuring after sowing before budding, and spraying the stems and leaves of the post-emergence weeds with 300g/L Pretilachlor EC100 mL+ 3% florpyrauxifen OD 53.3 mL, or 13% Cyhalofop-butyl and Florpyrauxifen mixture EC80 mL+ 100 g/L florpyrauxifen EC100 mL, or 10% Dicyclosulfone and Bisoxadionitrile GG 200 g, or 39% Propanil and Clomazone mixture EC 200 mL + 85% Butachlor EC47 mL, or 4% Bisoxadionitrile SC 150 mL is used for soil sealing, and spraying 2% Bisoxadionitrile GR 600 g 10~15d after sowing.