南繁玉米试验地不同除草剂防效比较

Different Herbicides Control Effect Compared on South Off-Season Breeding in Maize Field

以"玉洋洋"、"玉临军"、"苞卫"、"随薏打"和"金都尔"5种化学除草剂为试验药剂,以丹玉8479为试材,研究南繁玉米试验田的杂草防治效果。结果表明,不同除草剂间对杂草的防效存在差异性,"玉洋洋"和"随薏打"防效较好,最高值超过90%;"苞卫"和"金都尔"的防效周期较长,达30~35 d。5种除草剂对玉米均相对安全,对收获产量影响也较小。综合防治效果和防控周期考虑,在南繁玉米试验田根据不同需要可以使用"玉洋洋"和"苞卫"2种除草剂。根据海南冬季农田生产的特殊性,施用除草剂时应严格控制剂量并防止漂移,避免对周围瓜菜和后茬作物产生影响。

Common maize hybrid Danyu8479 was used as the material to test the control effect of five herbi- cides on weeds on south off-season breeding in maize field. The results showed that control effect had significant dif- ferences on different herbicides, the highest control effect of Yuyangyang and Suiyida were better of more than 90%, Baowei and Jinduer had a long cycle control effect to 30-35 days. The effects to maize were relatively safety and lit- tle influence on yield of five herbicides. It was recommended to use 2 kinds of herbicides Yuyangyang and Baowei on south off-season breeding in maize field considering both control effects and control cycle. Due to the particularity farmland production of Hainan winter, it should strictly control the dose and prevent drift when spraying herbi- cide to avoid the adverse effects of surrounding crops.