不同除草剂防除水稻移栽田杂草的使用技术

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中图分类号：S451.2 文献标志码：A 文章编号：1003-935X（2025）02-0060-06

Application Technology of Different Herbicidesfor Weed Control in Transplanted Rice Fields

FENG Tao1，ZHOU Bin1，YAN Bojun²，SHEN Qing²，XIA Zhonglan 3 （2号 [1.Kunshan Cultivated Land Qualityand PlantProtection Station，Kunshan 2153OO，China 2. Suzhou Municipal Plant Protection and Quarantine Station，Suzhou 215ooo，China; 3.Rural Work Office of Zhangpu Town，KunshanCity，Kunshan2153OO，China）

Abstract：Fieldtrialswereconducted inKunshan，Jiangsu Province during 2O22-2O23 toevaluate theeffcacyand selectivity of pre-emergence herbicides for weedcontrol intransplantedrice fields.Theresults showed thata single pre-emergence application of either oxaziclomefone 10% EC or triafamone ⋅ tefuryltrione 27% EC failed to provide weed control inwhole-seasonricefields.However，doublepre-emergence applicationssignificantly improved efficacy，achieving >85% control of weed density and >79% reduction infreshweightat 45 daysafter treatment.For fields with established weeds，acombined approachof pre-emergence treatment followedbypost-emergence application demonstrated superior performance （ >93% of plant control and >94% of fresh weight control）．Both herbicides proved efectiveforpre-emergenceapplications，though strictadherence torecommendedrates wasessential to prevent phytotoxicity.The study recommends either two sequential pre-emergenceapplications or acombined preand post-emergence approach to effctively manage late-season weed pressure in transplanted rice systems.

Keywords： herbicide；transplantedrice fields；control efect；selectivity；doublepre-emergenceapplications;a combined pre- and post -emergence approach

随着水稻耕作制度的改变及轻简化栽培技术的推广，稻田杂草群落演替加快，田间草相更加复杂、发生量大、出草时间长[1-2]，若防除不到位，极易造成水稻减产甚至绝收，严重威胁粮食安全。（剩余6149字）