摘要
除草剂单一使用易使杂草产生抗性。本研究通过田间试验比较了3种除草剂组合[(1)土壤喷雾30%苄嘧磺隆·丙草胺可分散油悬浮剂后,茎叶喷雾40%氰氟草酯·噁唑酰草胺可分散油悬浮剂+10%氟嘧啶草醚可分散油悬浮剂(Z-1);(2)茎叶喷雾15%噁唑酰草胺·二氯喹啉酸可分散油悬浮剂+20%氰氟草酯可分散油悬浮剂+43%2-甲-4-氯·氯氟吡氧乙酸可分散油悬浮剂(Z-2);(3)茎叶喷雾15%噁唑酰草胺乳油+20%氰氟草酯可分散油悬浮剂+43%2-甲-4-氯·氯氟吡氧乙酸可分散油悬浮剂(Z-3)]对水直播稻田杂草的防除效果,拟筛选高效除草剂组合,以期延缓杂草抗性发展。结果表明,第2次施药后30 d,3种除草剂组合对禾本科杂草千金子、莎草科杂草、丁香蓼及其他阔叶杂草等的鲜重防效均为100.00%,对稗属杂草的鲜重防效达93%以上,对总草的鲜重防效为93.34%~99.97%。综合分析,上述3种除草剂组合均能有效控制水直播稻田杂草,其中处理Z-1效果最好。
The single use of herbicides can easily lead to weed resistance.In this study,the control effects of three herbicide combinations[①spraying 40%cyhalofoprin·metamifop OD+10%luorouracridine OD on stems and leaves after soil spray of 30%bensulfuron·pretilachlor OD(Z-1);②spraying 15%metamifop·quinclorac OD+20%cyhalofoprin OD+43%MCPA·fluroxypyr OD on stems and leaves(Z-2);③spraying 15%metamifop EC+20%cyhalofoprin OD+43%MCPA·fluroxypyr OD on stems and leaves(Z-3)]against weeds in wet-directed seeding rice fields were compared through field experiments,in order to screen efficient herbicide combinations and delay the development of weed resistance.The results showed that,after 30 days of the second application of the herbicides,the fresh weight control effects of the three herbicide combinations against weeds such as Leptochloa chinensis(L.)Nees(Poaceae),weeds of Cyperaceae,Ludwigia prostrata Roxb.and other broadleaf weeds were all 100.00%,and the fresh weight control effects of the three herbicide combinations against weeds of Echinocloa spp.,the total grass were over 93%and 93.34%-99.97%,respectively.Based on the comprehensive analysis,all the three herbicide combinations mentioned above could effectively control weeds in wet-directed seeding rice fields,and Z-1 treatment had the best effect.
作者
周建
李奇
蒋明浩
朱维玉
ZHOU Jian;LI Qi;JIANG Minghao;ZHU Weiyu(Agricultural Comprehensive Service Center of Feixi County,Feixi Anhui 231200;College of Plant Protection,Anhui Agricultural University,Hefei Anhui 230031;Anhui Share World Bio-Tech Co.,Ltd.,Huainan Anhui 230036)
出处
《现代农业科技》
2023年第11期75-78,83,共5页
Modern Agricultural Science and Technology
基金
安徽省科技重大专项“安徽省稻田除草剂新产品研发及产业化”(201903a06020033)。
关键词
水直播稻田
杂草
除草剂组合
防治效果
wet-directed seeding rice field
weed
herbicide combination
control effect
