21%五氟·氯氟吡OD控制直播稻田杂草初探

Study on Control of 21% Penoxsulam·Furoxypyr OD on Weeds in Direct Seeding Rice Field

21%五氟·氯氟吡OD按照450、525、600、900、1 200、1 500 g/hm2共6个浓度在直播稻田杂草3～5叶期进行喷雾处理。结果表明,21%五氟·氯氟吡OD在900～1 500 g/hm2浓度下可有效控制直播稻田杂草,其中1 200 g/hm2的处理性价比最高,30 d对杂草的防治效果均为100%,且对水稻安全。

21% Penoxsulam·Furoxypyr OD was sprayed at 3-5 leaf stage of direct seeding rice weeds with 6 concentrations of 450, 525, 600, 900, 1 200 and 1 500 g/hm^2. The results showed that 21% Penoxsulam·Furoxypyr OD could effectively control the field weeds at the concentration of 900-1 500 g/hm^2, of which 1 200 g/hm^2 had the highest performance-price ratio, the control effect of 30 days on weeds was 100%, and it was safe for rice.