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[目的]探讨二氯喹啉酸、莠去津和2,4-滴异辛酯复配联合作用类型及在高粱田应用的可行性。[方法]采用室内生物测定的方法,研究3者复配后联合作用类型和对高粱的安全性。[结果]3者复配优势互补,加快作用速度,对马唐、稗草属于相加作用并略有增效,对鳢肠和苘麻属于相加作用,复配制剂对马唐、稗草、鳢肠和苘麻的GR50分别为227.37、92.33、184.88、192.16 g a.i./hm2,GR90分别为681.62、324.04、450.53、537.21 g a.i./hm2;对高粱的安全性较好,GR10为1 547.21 g a.i./hm2,高粱和4种杂草之间的选择性指数在2.27~4.77之间。[结论]二氯喹啉酸、莠去津和2,4-滴异辛酯3者混配剂可作为备选药剂进行田间试验,茎叶处理防除高粱田杂草。
[Objective] The research aimed to discuss the combination action of quinclorac, atrazine and 2,4-isooctyl ester and its feasibility in sorghum field. [Method] The indoor bioassay method was used to study the combined action type and the safety to sorghum after the combination of the three. [Result] The three groups were complementary to each other to accelerate the speed of action. Crabgrass and barnyardgrass were additive and slightly synergistic. , GR50 of gut and flax were 227.37, 92.33, 184.88 and 192.16 g ai / hm2 respectively, GR90 was 681.62, 324.04, 450.53 and 537.21 g ai / hm2, respectively. The safety for sorghum was better, GR10 was 1 547.21 g ai / hm2, the selectivity index between sorghum and four weeds ranged from 2.27 to 4.77. [Conclusion] Quinclorac, atrazine and 2,4-diisodecyl-3 mixed agent could be used as the alternative medicine for field experiments and stem and leaf treatment to control weeds in sorghum field.