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试验研究了30%苄.异丙草胺WP防除水稻移栽田稗草和鸭舌草的效果,并测定了对杂草氮、磷、钾和水分的影响。试验结果表明,30%苄.异丙草胺WP对水稻移栽田的稗草和鸭舌草具有良好的防治效果。有效成分用量90.0～135.0 g/hm2的30%苄.异丙草胺WP施药后50 d,稗草的密度防效和鲜重防效分别为89.31%～94.30%、91.69%～96.02%,鸭舌草的密度防效和鲜重防效分别为96.83%～98.76%、96.76%～97.99%,总体防效优于对照药剂72%异丙草胺EC和10%苄嘧磺隆WP。施用30%苄.异丙草胺WP能降低杂草对田间养分和水分的吸收,提高水稻产量。
The effect of 30% benzylpropisalamine WP on the control of barnyardgrass and monocotyledon in transplanting paddy fields was studied and the effects on nitrogen, phosphorus, potassium and water of weeds were tested. The results showed that 30% benzylpropisalactam WP had a good control effect on barnyardgrass and monocotyledon of paddy fields. The control effect of fresh weight and anti-fresh weight of barnyardgrass were 89.31% -94.30% and 91.69% -96.02%, respectively, at the 50th day after the treatment of WP with the effective components of 90.0-135.0 g / The density control effect and fresh weight control efficiency of Monochamus alternatus were 96.83% ~ 98.76% and 96.76% ~ 97.99%, respectively, and the overall control effect was superior to that of the control agent 72% isopropilamide EC and 10% bensulfuron-methyl WP. The application of 30% benzylpropanamide WP can reduce weeds in the field of nutrient and water absorption, improve rice yield.