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时间:2019-06-29
《玉米田除草剂金龙裕的田间药效试验-论文》由会员上传分享,免费在线阅读,更多相关内容在行业资料-天天文库。
1、河南农业科学,2015,44(1):77—81JournalofHenanAgriculturalSciencesdoi:10.15933/j.cnki.1004—3268.2015.01.016玉米田除草剂金龙裕的田间药效试验侯文邦,周璐,周浩冉(1.河南科技大学农学院,河南洛阳471003;2.西北农林科技大学无公害农药研究服务中心,陕西杨凌712100)摘要:以常用玉米品种郑单958为试验材料,烟嘧磺隆、莠去津、二甲四氯三元复配的新型玉米田除草剂金龙裕为试验药剂,研究不同用量(低剂量750g/hm,中剂量1
2、049g/hm,高剂量1349g/hm,倍量剂量2099g/hm)金龙裕对玉米田杂草的防治效果。结果表明:金龙裕对双子叶杂草有较高的杀草速效性,药后7d株防效即达到79.71%~85.63%;而对单子叶杂草持效期长,药后28d株防效为79.67%~94.92%。药剂对杂苹的株防效和鲜质量防效随药剂用量的增加而增加。对杂草总体来说,施药后28d,倍量剂量处理的株防效达94.53%,显著高于低剂量处理的防效(78.63%);所有处理的鲜质量防效均在95.32%以上。同一处理对不同杂草的防治效果不同,双子叶杂草最为敏感
3、,其后依次为麦苗、狗尾草、稗草,马唐最不敏感。喷药后,玉米有轻微扭曲,但不影响其后期产量,所有处理的产量(低剂量8247kg/hm,中剂量9243kg/hm,高剂量9836kg/hm,倍量剂量9465kg/hm)均显著高于清水对照(6761kg/hm)。说明施用金龙裕对玉米安全并有增产作用,在生产中推荐中剂量和高剂量防治玉米田杂草。关键词:玉米;金龙裕;烟嘧磺隆;莠去津;二甲四氯;杂草;田间药效;产量中图分类号:$482.4文献标志码:A文章编号: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
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