为筛选大豆田中对常见杂草鳢肠和马瓟瓜防除效果好的除草剂,通过整株生物测定法测定24种常用除草剂(主要包括乙酰乳酸合成酶ALS类、原卟啉原氧化酶PPO抑制类、光合作用PSⅡ抑制类除草剂)茎叶喷雾处理对鳢肠和马瓟瓜的除草活性及对大豆...为筛选大豆田中对常见杂草鳢肠和马瓟瓜防除效果好的除草剂,通过整株生物测定法测定24种常用除草剂(主要包括乙酰乳酸合成酶ALS类、原卟啉原氧化酶PPO抑制类、光合作用PSⅡ抑制类除草剂)茎叶喷雾处理对鳢肠和马瓟瓜的除草活性及对大豆的安全性。结果表明:ALS抑制类除草剂在药后3、7 d对鳢肠和马瓟瓜的防除效果不佳,药后14 d有所提升,其中噻吩磺隆对2种杂草的鲜重抑制率达88.31%~94.61%。PPO抑制类除草剂苯嘧磺草胺、氟磺胺草醚、乙氧氟草醚和PSⅡ抑制类除草剂灭草松、辛酰溴苯腈、氨唑草酮处理后对鳢肠的防除效果在药后3、7、14 d整体均表现为良好,其中70%苯嘧磺草胺水分散粒剂(WDG)26.25~78.75 g a.i./hm^(2)、480 g/L灭草松水剂(AS)540~1440 g a.i./hm^(2)、30%辛酰溴苯腈乳油(EC)168.75~405 g a.i./hm^(2)处理的鲜重抑制率均达100.00%,防除效果理想。PPO抑制类除草剂28%三氟羧草醚微乳剂(ME)225~450 g a.i./hm^(2)、10%乙羧氟草醚EC 60~90 g a.i./hm^(2)、250 g/L氟磺胺草醚AS 225~450 g a.i./hm^(2)处理在施用后7、14 d,其对马瓟瓜的株数抑制率和鲜重抑制率达86.50%~100.00%;PSⅡ抑制类除草剂38%莠去津悬浮剂(SC)225~450 g a.i./hm^(2)和40%氰草津SC 150~300 g a.i./hm^(2)处理虽在药后3 d对马瓟瓜的防除效果较差,但药后7、14 d的株抑制率和鲜重抑制率达94.58%~100.00%。安全性试验结果表明,PPO抑制类苯嘧磺草胺、三氟羧草醚、乙羧氟草醚、氟磺胺草醚和PSⅡ抑制类除草剂灭草松、辛酰溴苯腈对大豆安全,但莠去津和氰草津对大豆会产生严重的药害。综上所述,PPO抑制类苯嘧磺草胺和PSⅡ抑制类除草剂灭草松、辛酰溴苯腈可以作为防除大豆田鳢肠的候选药剂,PPO抑制类三氟羧草醚、乙羧氟草醚、氟磺胺草醚可以作为马瓟瓜的候选防除药剂。展开更多
近年来,玉米田杂草对烟嘧磺隆、莠去津已经产生了较高水平的抗药性,为找到更为安全高效环保的玉米苗后除草剂替代产品,2024年在安徽省巢湖市开展田间小区试验,以验证2.6%苯唑草酮·噻酮磺隆可分散油悬浮剂(OD)对玉米田杂草的药效、...近年来,玉米田杂草对烟嘧磺隆、莠去津已经产生了较高水平的抗药性,为找到更为安全高效环保的玉米苗后除草剂替代产品,2024年在安徽省巢湖市开展田间小区试验,以验证2.6%苯唑草酮·噻酮磺隆可分散油悬浮剂(OD)对玉米田杂草的药效、杀草谱及对玉米的安全性。结果表明,2.6%苯唑草酮·噻酮磺隆OD的杀草谱较广,可防除一年生禾本科杂草(马唐、稗)及绝大部分阔叶杂草(反枝苋、苘麻、空心莲子草和铁苋菜)。施药后30 d,2.6%苯唑草酮·噻酮磺隆OD处理对各种杂草的综合株防效为87.3%~98.2%,综合鲜重防效达90.7%~99.6%。2.6%苯唑草酮·噻酮磺隆OD适宜使用剂量为39.0~58.5 g a.i./hm^(2),在玉米3~6叶期兑水600 L/hm^(2)茎叶喷雾,对玉米生长安全,并有较好的增产效果。展开更多
[Objectives]To address the weeding challenges within the corn and soybean strip intercropping field and identify appropriate herbicide types and application methods suitable for the corn and soybean strip intercroppin...[Objectives]To address the weeding challenges within the corn and soybean strip intercropping field and identify appropriate herbicide types and application methods suitable for the corn and soybean strip intercropping fields in Siyang County.[Methods]The trial comprised six herbicide treatments and one blank control,with investigations conducted to assess efficacy,safety,and yield.[Results]Each herbicide treatment effectively controlled weeds,demonstrated high safety,and enhanced the yields of both soybeans and corn.The combined application of soil sealing with stem and leaf spray exhibited superior overall weed control compared to soil sealing alone.At 28 d following stem and leaf spray,the plant control effect and fresh weight control effect against weeds in the combined treatment of soil sealing with stem and leaf spray all exceeded 89%.[Conclusions]This study offers technical support for advancing the practice of strip intercropping between corn and soybeans.展开更多
文摘为筛选大豆田中对常见杂草鳢肠和马瓟瓜防除效果好的除草剂,通过整株生物测定法测定24种常用除草剂(主要包括乙酰乳酸合成酶ALS类、原卟啉原氧化酶PPO抑制类、光合作用PSⅡ抑制类除草剂)茎叶喷雾处理对鳢肠和马瓟瓜的除草活性及对大豆的安全性。结果表明:ALS抑制类除草剂在药后3、7 d对鳢肠和马瓟瓜的防除效果不佳,药后14 d有所提升,其中噻吩磺隆对2种杂草的鲜重抑制率达88.31%~94.61%。PPO抑制类除草剂苯嘧磺草胺、氟磺胺草醚、乙氧氟草醚和PSⅡ抑制类除草剂灭草松、辛酰溴苯腈、氨唑草酮处理后对鳢肠的防除效果在药后3、7、14 d整体均表现为良好,其中70%苯嘧磺草胺水分散粒剂(WDG)26.25~78.75 g a.i./hm^(2)、480 g/L灭草松水剂(AS)540~1440 g a.i./hm^(2)、30%辛酰溴苯腈乳油(EC)168.75~405 g a.i./hm^(2)处理的鲜重抑制率均达100.00%,防除效果理想。PPO抑制类除草剂28%三氟羧草醚微乳剂(ME)225~450 g a.i./hm^(2)、10%乙羧氟草醚EC 60~90 g a.i./hm^(2)、250 g/L氟磺胺草醚AS 225~450 g a.i./hm^(2)处理在施用后7、14 d,其对马瓟瓜的株数抑制率和鲜重抑制率达86.50%~100.00%;PSⅡ抑制类除草剂38%莠去津悬浮剂(SC)225~450 g a.i./hm^(2)和40%氰草津SC 150~300 g a.i./hm^(2)处理虽在药后3 d对马瓟瓜的防除效果较差,但药后7、14 d的株抑制率和鲜重抑制率达94.58%~100.00%。安全性试验结果表明,PPO抑制类苯嘧磺草胺、三氟羧草醚、乙羧氟草醚、氟磺胺草醚和PSⅡ抑制类除草剂灭草松、辛酰溴苯腈对大豆安全,但莠去津和氰草津对大豆会产生严重的药害。综上所述,PPO抑制类苯嘧磺草胺和PSⅡ抑制类除草剂灭草松、辛酰溴苯腈可以作为防除大豆田鳢肠的候选药剂,PPO抑制类三氟羧草醚、乙羧氟草醚、氟磺胺草醚可以作为马瓟瓜的候选防除药剂。
文摘近年来,玉米田杂草对烟嘧磺隆、莠去津已经产生了较高水平的抗药性,为找到更为安全高效环保的玉米苗后除草剂替代产品,2024年在安徽省巢湖市开展田间小区试验,以验证2.6%苯唑草酮·噻酮磺隆可分散油悬浮剂(OD)对玉米田杂草的药效、杀草谱及对玉米的安全性。结果表明,2.6%苯唑草酮·噻酮磺隆OD的杀草谱较广,可防除一年生禾本科杂草(马唐、稗)及绝大部分阔叶杂草(反枝苋、苘麻、空心莲子草和铁苋菜)。施药后30 d,2.6%苯唑草酮·噻酮磺隆OD处理对各种杂草的综合株防效为87.3%~98.2%,综合鲜重防效达90.7%~99.6%。2.6%苯唑草酮·噻酮磺隆OD适宜使用剂量为39.0~58.5 g a.i./hm^(2),在玉米3~6叶期兑水600 L/hm^(2)茎叶喷雾,对玉米生长安全,并有较好的增产效果。
文摘[Objectives]To address the weeding challenges within the corn and soybean strip intercropping field and identify appropriate herbicide types and application methods suitable for the corn and soybean strip intercropping fields in Siyang County.[Methods]The trial comprised six herbicide treatments and one blank control,with investigations conducted to assess efficacy,safety,and yield.[Results]Each herbicide treatment effectively controlled weeds,demonstrated high safety,and enhanced the yields of both soybeans and corn.The combined application of soil sealing with stem and leaf spray exhibited superior overall weed control compared to soil sealing alone.At 28 d following stem and leaf spray,the plant control effect and fresh weight control effect against weeds in the combined treatment of soil sealing with stem and leaf spray all exceeded 89%.[Conclusions]This study offers technical support for advancing the practice of strip intercropping between corn and soybeans.
