植物生长调节剂与异丙隆 + 唑啉草酯 + 氯氟吡氧乙酸组合桶混对麦田杂草防效和小麦安全性的影响

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关键词：植物生长调节剂；杂草防效；安全性；生长指标；小麦；产量中图分类号： S451.22+1 ;S482.8 文献标志码：A 文章编号：1003-935X（2025）03-0056-08

Control Effects of Tank - Mixing Plant Growth Regulators with Isoproturon + Pinoxaden + Fluroxypyr on Weeds and Their Selectivity to Wheat in Fields

GU Tao' ，HUANG Tian'ai²，YANG Qian³，ZHU A'xiu4，LYU Min3，WANG Ke'，CAO Jingjing' ，WANG Hongchun' （1.Institute of Plant Protection，Jiangsu Academy of Agricultural Sciences，Nanjing 21Oo14，China; 2. College of Plant Protection，Nanjing Agricultural University，Nanjing 21Oo95，China; 3.Institute of Agricultural Sciences for Lixiahe Region in Jiangsu，Yangzhou 225oo7，China; 4. Jiangsu Plant Protection and Quarantine Station，Nanjing 21Oo36，China）

Abstract：Field plot experiments wereconducted toevaluateeffectsof sevenplant growthregulators（PGR）with the herbicides combinations isoproturon + pinoxaden + fluroxypyr on weeds control and their selectivity to wheat，including dihydroporphyrin iron，diethylaminoethyl hexanoate（DA-6），sodiumnitrophenolate，gibberelicacid·indol-3 ylacetic acid·brassinolide（GA·IAA·BR），24-epibrassinolide，oligosaccharins，andpotassium dihydrogen phosphate.The results showed that tank-mixing sodium nitrophenolate，GA ⋅⋅ IAA ⋅⋅ BR，and 24-epibrassinolide with herbicides significantly enhanced weeds control effects（ >95% ），outperforming herbicide treatments without PGR.At 20days afterapplication，wheat treated with oligosaccharintank-mixed herbicides exhibited notablereductionsin plant height，tiller number，shoot fresh weight，and SPAD value，while DA -6 and potassium dihydrogen phosphate treatments induced transient phytotoxicity symptoms.By8Odays after application，alladverse efects subsided.Notably，wheat yields in treatments with sodium nitrophenolate，GA ⋅ IAA·BR，or 24-epibrassinolide exceeded 7.O7t/hm²， significantly surpassing other combinations.

Key words：plant growth regulator;weed control efect;selectivity;growth indicators;wheat yiel

全球超1/3的人口以小麦（TriticumaestivumL.）为主食，其生产水平直接关系粮食安全与社会稳定。（剩余9717字）