豆杰防除红小豆田阔叶杂草效果

Effective and Safety Evaluation of First Rate for Controlling Broad-leaved Weeds in Small Red Bean Field

为探讨豆杰在红小豆田应用的除草效果及安全性,采用了豆杰单用及混配三氟羧草醚、咪草烟、氟磺胺草醚于红小豆苗后处理。结果表明:豆杰在30及45g·hm-2剂量下单用及豆杰30g·hm-2+咪草烟1 500mL·hm-2混用,对红小豆田鸭跖草、刺儿菜和苣荬菜等阔叶杂草有良好的防效,施药后对红小豆株高略有影响,但7d左右恢复生长,对产量无影响,可安全用于红小豆田除草。

To explore control efficiency and safety of First Rate in small red bean field,taking First Rate,First Rate＋Fomesafen,First Rate＋Acifluorfen and First Rate＋Imazethapyr as treatments to research their phytocidal effect of broadleaf weeds and safety in small red bean field.The results showed that phytocidal effect of First Rate 30and 45g·hm-2,First Rate 30g·hm-2＋Imazethapyr 1 500g·hm-2 on Commelina communis Linn,Cirsium setosum,Sonchus arvensis and the other broadleaf weeds were better.There was little effect on the height of the small red bean first and restored growth after 7days.While it had no effect on the producting of small red bean,so that these could be safely used.