安融乐对花生田除草剂防效和花生药害的影响

Effect of Anrongle on Herbicidal Efficacy and Injury in Peanut Field

为探讨安融乐对花生田除草剂作用效果的影响,以豫花22为材料,采用安融乐与除草剂混合茎叶喷施,分析加入安融乐后杂草防效、花生药害及叶片生理指标的变化。结果表明,短期内安融乐可提高除草剂对杂草的防效,后期总体上降低精喹禾灵+氟磺胺草醚处理[(45+337.5)、(60+450)g/hm^2)]的除草活性,提高高效氟吡甲禾灵+乙羧氟草醚[(48.6+30)、(64.8+45)g/hm^2]高剂量处理和甲咪唑烟酸72、108 g/hm^2处理的除草活性。精喹禾灵+氟磺胺草醚处理造成花生2~4级药害,过氧化物酶(POD)、抗坏血酸过氧化物酶(APX)、低剂量下过氧化氢酶(CAT)活性及高剂量下可溶性糖含量显著升高,加入安融乐使低剂量下药害降低1~2级,对高剂量下药害无明显缓解,POD、APX活性及可溶性糖含量保持显著升高,CAT活性变化表现为低剂量下降至空白对照水平,高剂量下显著升高。高效氟吡甲禾灵+乙羧氟草醚处理初有轻微药害,7 d后症状消失,甲咪唑烟酸处理14 d产生轻微药害,均表现为仅高剂量下APX活性显著升高,加入安融乐,前者处理低剂量下POD、CAT、APX活性显著升高,高剂量下APX活性降至空白对照水平,后者处理高剂量下APX活性仍保持显著升高状态,对其余指标影响较小。因此推测,花生叶片POD、CAT、APX活性及可溶性糖含量的变化可能是安融乐调节花生应对除草剂胁迫的生理反应。

In order to study the effect of Anrongle on herbicidal efficacy in peanut field, the peanut Yuhua 22 was taken as material, the foliar spray of Anrongle and herbicide mixture was adopted in fields, and herbicidal efficacy, peanut injury and physiological parameters of injuried leaves were investigated and de- termined. Results showed that the weed control effect was enhanced by Anrongle in the short term. In the later term,the weed control effects of haloxyfop-P-methyl ＋ fluoroglycofen-ethyl （64.8＋45） g/ha and imazapic 72,108 g/ha were enhanced,while those were obviously reduced for quizalofop-P-ethyl ＋ fome- safen to control weeds by Anrongle. A 2 4 level injury and an obvious enhancement in activities of per- oxidase （ POD）, ascorbic acid peroxidase （ APX）, and catalase （CAT） under lower dose, and in content of soluble sugar under higher dose were presented when treated with quizalofop-P-ethyl ＋ fomesafen. When it was applied with Anrongle,the injury decreased by 1 2 level at lower dose,and no obvious alleviation was investigated at higher dose, the activities of POD, APX and the content of soluble sugar were still sig- nificantly enhanced,the CAT activity was dropped to CK level at lower dose and significantly enhanced at higher dose. When treated with haloxyfop-P-methyl ＋ fluoroglycofen-ethyl and imazapic, slight injury was presented in a short-term and 14 days after treating, respectively, the former injury disappeared in 7 days, both the APX activity at higher dose showed a significant enhancement. When Anrongle was added, POD, CAT and APX activities in the former at lower dose were significantly enhanced,APX activity at higher dose was dropped to CK level, in the latter APX activity at higher dose still kept significant enhancement, while other indexes were affected less. Therefore, the change of CAT, APX, POD activities and soluble sugar content might be the physiological reaction for Anrongle adjusting peanut growth under herbicidal stress.