不同土壤处理除草剂对红小豆田除草效果及产量的影响

Effect of Different Soil Herbicides on Weed Control and Red Bean Yield in Field

[目的]研究红小豆田草害控制技术,并配套组装、开发与示范。[方法]通过田间试验,测定9种土壤处理除草剂对红小豆的安全性、产量的影响及除草效果。[结果]50%扑草净WP、25%氟磺胺草醚EC、75%噻吩磺隆WG在试验剂量下安全性好。25%氟磺胺草醚EC 2 250 m L/hm2、48%异恶草松EC 1 500 m L/hm2、70%嗪草酮WP 900 g/hm2(均为制剂用量)药效较好。70%嗪草酮WP 1 200 g/hm2药效最好。25%氟磺胺草醚EC、12%恶草酮EC、48%异恶草松EC、70%嗪草酮WP具有增产作用。[结论]25%氟磺胺草醚EC、48%异恶草松EC、70%嗪草酮WP具有除草效果好、增产作用。

[Aims] The paper aims to study the weed control technology of red bean field, and a complete set of supporting assembly, development and demonstration. [Methods] The field test was conducted to measure the effect of nine kinds of soil-applied herbicides on the safety and yield of red bean and the control of weed. [Results] The safety of prometryne 50% WP, fomesafen 25% EC and thifensulfuron 75% WG were good at the test doses. Fomesafen 25% EC 2 250 mL/ha, clomazone 48% EC 1 500 mL/ha, and metribuzin 70% WP 900 g/ha showed a better effect of weed control, and the effect of metribuzin WP 1 200 g/ha was the best. Fomesafen 25% EC, oxadiazon 12% EC, clomazone 48% EC, metribuzin 70% WP could increase the yield of red bean. [Conclusions] The effect of fomesafen 25% EC, clomazone 48% EC, metribuzin 70% WP on weed control and yield increase of red beans were better than others.