摘要
为了做好直播稻田除草剂新旧品种替换工作,研究不同药剂对直播稻田杂草的防除效果,结果表明:60 g/L五氟磺草胺·氰氟草酯可分散油悬乳剂防除直播稻田杂草,对单双子叶杂草高效,速效性强,持效性好,在设计剂量范围内对水稻安全。可在直播水稻田杂草二至四叶期茎叶喷雾,施药前放干田水,药后1~3 d覆水并保水5~7 d。推荐使用剂量有效成分60~120g/hm^2。试验药剂60 g/L五氟磺草胺·氰氟草酯可分散油悬乳剂各剂量处理水稻增产28.18%~50.90%。
In order to do a good job of old and new herbicide varieties replacement in direct-sowing rice fields, control effect of different herbicides on the weeds in direct-sowing rice fields were researched. Results showed that 60g/L penoxsulam, cyhalofop- butyl dispersible oil emulsion could prevent the weeds in direct-sowing rice fields, for single and double cotyledons weeds prevention effectively, fast- acting property is strong,with good persistence,within the scope of design dose is safe to rice. 60 g/L penoxsulam- cyhalofop-hutyl dispersible oil emulsion can spray on the stem leaf in the rice fields during weeds 2-4 leaves phase,before applying herbicide should put dry paddy ,after applying herbicide 1-3 days, cover and keep water for 5-7 days. Recommended dose was active ingredient 60 g/hm^2 to 120 g/hm^2. Different treatments of 60 g/L penoxsulam·cyhalofop-butyl dispersible oil emulsion increased rice production 17.27% to 50.90%.
出处
《现代农业科技》
2017年第3期96-97,共2页
Modern Agricultural Science and Technology