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1、河南農(nóng)業(yè)科學(xué),2015,44(1):77—81JournalofHenanAgriculturalSciencesdoi:10.15933/j.cnki.1004—3268.2015.01.016玉米田除草劑金龍?jiān)5奶镩g藥效試驗(yàn)侯文邦,周璐,周浩冉(1.河南科技大學(xué)農(nóng)學(xué)院,河南洛陽471003;2.西北農(nóng)林科技大學(xué)無公害農(nóng)藥研究服務(wù)中心,陜西楊凌712100)摘要:以常用玉米品種鄭單958為試驗(yàn)材料,煙嘧磺隆、莠去津、二甲四氯三元復(fù)配的新型玉米田除草劑金龍?jiān)樵囼?yàn)藥劑,研究不同用量(低劑量750g/hm,中劑量1
2、049g/hm,高劑量1349g/hm,倍量劑量2099g/hm)金龍?jiān)τ衩滋镫s草的防治效果。結(jié)果表明:金龍?jiān)﹄p子葉雜草有較高的殺草速效性,藥后7d株防效即達(dá)到79.71%~85.63%;而對單子葉雜草持效期長,藥后28d株防效為79.67%~94.92%。藥劑對雜蘋的株防效和鮮質(zhì)量防效隨藥劑用量的增加而增加。對雜草總體來說,施藥后28d,倍量劑量處理的株防效達(dá)94.53%,顯著高于低劑量處理的防效(78.63%);所有處理的鮮質(zhì)量防效均在95.32%以上。同一處理對不同雜草的防治效果不同,雙子葉雜草最為敏感
3、,其后依次為麥苗、狗尾草、稗草,馬唐最不敏感。噴藥后,玉米有輕微扭曲,但不影響其后期產(chǎn)量,所有處理的產(chǎn)量(低劑量8247kg/hm,中劑量9243kg/hm,高劑量9836kg/hm,倍量劑量9465kg/hm)均顯著高于清水對照(6761kg/hm)。說明施用金龍?jiān)τ衩装踩⒂性霎a(chǎn)作用,在生產(chǎn)中推薦中劑量和高劑量防治玉米田雜草。關(guān)鍵詞:玉米;金龍?jiān)?;煙嘧磺?。惠ソ?;二甲四氯;雜草;田間藥效;產(chǎn)量中圖分類號:$482.4文獻(xiàn)標(biāo)志碼:A文章編號:1004—3268(2015)0l一0077—05FieldEfi
4、cacyofaCornHerbicide,JinlongyuHOUWenbang,ZHOULu,ZHOUHaoran(1.AgriculturalCollege,HenanUniversityofScienceandTechnology,Luoyang471003,China;2.CenterofPollution—freePesticideResearchandService,NorthwestAgriculture&ForestryUniversity,Yangling712100,China)Abstrac
5、t:Inthisexperiment,Zhengdan958,acommonmaizevarietywasusedasmateria1totestthecontrolefectofdifferentdosages(1owdose,750g/ha;middledose,1049g/ha;highdose,1349g/ha;foldamountdose,2099g/ha)ofJinlongyu,anewtypeherbicidecontainingnicosulfuron,atrazineandMCPA,oncorn
6、fieldweeds.TheresultsshowedthatJinlongyucouldquicklycontroldicotyledon0usweeds,andthequantitycontroleficiencyreached79.71%一85.63%7dlater,whiletomonoeotweeds,ithadalongcontrolduration.withthequantitycontroleficiencyof79.67%一94.92%28dlater.Thecontroleficacyforw
7、eedsquantityandfleshweightincreasedwiththeuseofpharmaceuticaldosageincreasing.Tothetotalweeds,28dafterspraying,thefoldamounttreatmenthadaquantitycontroleficiencyof94.53%,significantlyhigherthanthatofthelow-dosetreatment(78.63%);thefleshweightcontrolefi.ciency
8、ofallthetreatmentsweremorethan95.32%.Thesametreatmentfordiferentweedsshoweddif-ferentcontroleffect,themostsensitivespeciesweredicotweeds,followedbybarleygrass,greenfoxtail,barnyardgrass,a