0.136%赤·吲乙·芸苔可湿性粉剂与五氟磺草胺混用对无芒稗和水稻生长的影响  

Effects of GA·IAA·BR 0.136%wettable powder mixed with penoxsulam on the growth of Echinochloa crus-galli var.mitis and Oryza sativa

作　　者：程文超 李光宁 强胜[1] 左娇 夏爱萍 宋小玲[1] 张瑞萍 CHENG Wenchao;LI Guangning;QIANG Sheng;ZUO Jiao;XIA Aiping;SONG Xiaoling;ZHANG Ruiping(College of Life Sciences,Nanjing Agricultural University,Nanjing210095,China;Beijing Plum Agrochemical Trading Co.,Ltd.,Beijing100025,China;Jiangsu AgraForUm Soil Remediation Co.,Ltd.,Nantong226300,China)

机构地区：[1]南京农业大学生命科学学院,南京210095 [2]北京成禾佳信农资贸易有限公司,北京100025 [3]江苏爱佳福如土壤修复有限公司,南通226300

出　　处：《植物保护》2022年第2期94-100,105,共8页Plant Protection

基　　金：校企合作项目(2019320601000425)。

摘　　要：为探究0.136%赤·吲乙·芸苔可湿性粉剂(WP)与除草剂五氟磺草胺分散油悬浮剂(OD)混用对稗草防除效果及对水稻生长的影响,以无芒稗和水稻为研究对象,设置清水对照、0.136%赤·吲乙·芸苔WP、25 g/L五氟磺草胺OD、0.136%赤·吲乙·芸苔WP+25 g/L五氟磺草胺OD混用4个处理,观察药后无芒稗和水稻的生长情况,测定乙酰乳酸合酶(ALS)活性、叶绿素荧光参数及糖代谢和氮代谢等生理指标。结果表明,与25 g/L五氟磺草胺OD单用相比,0.136%赤·吲乙·芸苔WP+25 g/L五氟磺草胺OD混用处理药后第7天,无芒稗的中毒综合指数显著提高13.2%,ALS活性显著降低27.61%;无芒稗的叶绿素荧光参数(Fv/Fm、ETR、qP)、糖代谢和氮代谢指标均显著下降;水稻的ALS活性、糖、氮代谢水平均显著提高。0.136%赤·吲乙·芸苔WP+25 g/L五氟磺草胺OD混用提高了五氟磺草胺对无芒稗光合作用及糖代谢和氮代谢水平的抑制作用,提高了五氟磺草胺对无芒稗的防除效果;并能缓解五氟磺草胺对水稻的胁迫作用,促进水稻生长。Echinochloa crus-galli var.mitis and Oryza sativa were used to investigate whether the tank-mixed application of GA·IAA·BR 0.136%WP and penoxsulam 25 g/L OD in paddy fields affected the growth of rice and enhanced the control efficacy against barnyardgrass in this study.The experiments included four treatments:negative control(water),GA·IAA·BR 0.136%WP,penoxsulam 25 g/L OD,and GA·IAA·BR 0.136%WP+penoxsulam 25 g/L OD.The indices related to the growth of barnyardgrass and rice after treatment,acetolactate synthase(ALS)activity,chlorophyll fluorescence parameters,glucose metabolism and nitrogen metabolism were studied.The results showed that,compared with penoxsulam 25 g/L OD treatment,tank-mixed GA·IAA·BR 0.136%WP with penoxsulam 25 g/L OD significantly increased the comprehensive index of herbicide injury by 13.2%and significantly decreased ALS activity(by 27.61%),the chlorophyll fluorescence parameters(Fv/Fm,ETR,qP),glucose metabolism and nitrogen metabolism in the barnyardgrass on day seven after treatment.The ALS activity,glucose and nitrogen metabolism were significantly enhanced in rice.Tank-mixed GA·IAA·BR 0.136%WP with penoxsulam 25 g/L OD enhanced the inhibition of photosynthesis,glucose metabolism and nitrogen metabolism in barnyardgrass,improved the control effect of penoxsulam on barnyardgrass,alleviated the stress of penoxsulam on rice,and promoted the growth of rice.

关 键 词：植物生长调节剂 除草剂 赤·吲乙·芸苔 五氟磺草胺 水稻 无芒稗 防效 

分 类 号：S451.21[农业科学—植物保护]