不同除草劑防除水稻移栽田雜草的使用技術(shù)

打開(kāi)文本圖片集

中圖分類號(hào)：S451.2 文獻(xiàn)標(biāo)志碼：A 文章編號(hào)：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號(hào) [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

隨著水稻耕作制度的改變及輕簡(jiǎn)化栽培技術(shù)的推廣，稻田雜草群落演替加快，田間草相更加復(fù)雜、發(fā)生量大、出草時(shí)間長(zhǎng)[1-2]，若防除不到位，極易造成水稻減產(chǎn)甚至絕收，嚴(yán)重威脅糧食安全。（剩余6149字）