摘要
为了探究稻田除草剂与植物生长调节剂0.136%赤·吲乙·芸苔可湿性粉剂(WP)混用对水稻光合作用和产量的影响,以明恢63水稻为研究对象,以25 g/L五氟磺草胺可分散油悬浮剂(OD)1200 mL/hm^(2)、3%氯氟吡啶酯乳油(EC)1200 mL/hm^(2)分别单用及与0.136%赤·吲乙·芸苔WP 45 g/hm^(2)混用进行盆栽试验。结果表明,与单用除草剂相比,赤·吲乙·芸苔分别与五氟磺草胺、氯氟吡啶酯混用处理下,水稻抽穗扬花期的光合作用均有提升,气孔导度(G_(s))和蒸腾速率(T_(r))显著提高;水稻成熟期的单穗饱粒数、结实率、千粒重和单桶实测产量都有显著提高,分别提高了11.86%和18.54%、6.10%和9.24%、7.86%和13.83%、21.05%和36.25%。综上所述,0.136%赤·吲乙·芸苔WP与25 g/L五氟磺草胺OD或3%氯氟吡啶酯EC混用能促进水稻的光合作用,改善水稻的产量性状,最终增加产量。
To investigate effects of rice paddy herbicides mixing with plant growth regulator gibberellic acid·indol-3-ylacetic acid·brassinolide 0.136%WP on photosynthesis and yield,the pot experiment was conducted taking Minghui 63 as subject.The treatments involved penoxsulam^(2)5 g/L OD at 1200 mL/hm^(2)and florpyrauxifen-benzyl 3%EC at 1200 mL/hm^(2),as well as their respective mixture with gibberellic acid·indol-3-ylacetic acid·brassinolide 0.136%WP at 45 g/hm^(2).Compared to the treatment of penoxsulam or florpyrauxifen-benzyl applied alone,their mixture with gibberellic acid·indol-3-ylacetic acid·brassinolide improved in photosynthesis at heading and flowering stages of rice,and both G s and T r were significantly increased.The number of filled grains per panicle,seed setting rate,1000-grain weight and actual yield per bucket during the rice mature stage were significantly improved,with improvements of 11.86%and 18.54%,6.10%and 9.24%,7.86%and 13.18%,21.05%and 36.25%,respectively.In summary,gibberellic acid·indol-3-ylacetic acid·brassinolide 0.136%WP mixing with penoxsulam^(2)5 g/L OD or florpyrauxifen-benzyl 3%EC could promote photosynthesis and improve yield traits,thereby increasing yield in rice paddy.
作者
张瑞萍
李光宁
程文超
强胜
夏爱萍
宋小玲
ZHANG Ruiping;LI Guangning;CHENG Wenchao;QIANG Sheng;XIA Aiping;SONG Xiaoling(Beijing Plum Agrochemical Trading Co.,Ltd.,Beijing 100025,China;Weed Research Lab,College of Life Sciences,Nanjing Agricultural University,Nanjing 210095,China;Jiangsu Postgraduate Workstation,Jiangsu AgraForUm Soil Remediation Co.,Ltd.,Nantong 226300,China)
出处
《杂草学报》
2024年第3期77-82,共6页
Journal of Weed Science
基金
2019年江苏省“双创计划”。
关键词
赤·吲乙·芸苔
五氟磺草胺
氯氟吡啶酯
光合作用
产量
水稻
gibberellic acid·indol-3-ylacetic acid·brassinolide
penoxsulam
florpyrauxifen-benzyl
photosynthesis
yield
rice
