DENG Xun,SONG Xiao-shuang.Indoor Toxicity Test of Nine Kinds of Different Fungicideson Rhizoctonia solani of Fusarium solani [J].HEILONGJIANG AGRICULTURAL SCIENCES,2012,(10):54-57.
九种杀菌剂对刺五加苗木立枯病菌的室内毒力测定
- Title:
- Indoor Toxicity Test of Nine Kinds of Different Fungicideson Rhizoctonia solani of Fusarium solani
- 文章编号:
- 1002-2767(2012)10-0054-04
- Keywords:
- Acanthopanax senticosus; Rhizoctonia solani; fungicide; toxicity test
- 分类号:
- S435.67
- 文献标志码:
- A
- 摘要:
- 利用菌丝生长速率法和孢子萌发抑制法,测定了9种杀菌剂对刺五加苗木立枯病菌的毒力,筛选出有效控制刺五加苗木立枯病的高效杀菌剂。结果表明:抑制菌丝生长试验,32.5%苯甲+醚菌酯的EC50用药量最小,其对立枯丝核菌和腐皮镰刀菌菌丝生长抑制作用的EC50值分别为0.016 5和0.024 7 mg·L-1,10%苯醚甲环唑次之;在抑制孢子萌发方面,32.5%苯甲+醚菌酯效果最好,对分生孢子萌发抑制的EC50值为0.048 1 mg·L-1,25%醚菌酯次之,与菌丝生长抑制作用结果一致。综合分析,32.5%苯甲+醚菌酯和10%苯醚甲环唑不但可以抑制菌丝生长,还可以有效抑制孢子萌发,同传统杀菌剂多菌灵、代森锰锌比较,苯醚甲环唑和醚菌酯等新型杀菌剂更具优势,可以作为防治刺五加立枯病的备选药剂。
- Abstract:
- The toxicity of nine fungicides on Acanthopanax senticosus of Rhizoctonia solani was determined used the methods of mycelium growth and conidia germinations.The results showed that for the inhibition of mycelium growth experiment,the EC50 of 32.5% difenoconazole and kresoxim-methyl SC was the best and with a minimum dosage in all fungicides and the inhibition effect of EC50 of on Rhizoctonia solani and Fusarium solani were 0.016 5 and 0.024 7 mg·L-1,followed by 10% difenoconazole.For the inhibition of conidia germinations,32.5% difenoconazole and kresoxim-methyl SC was also the best and the EC50 was 0.048 1 mg·L-1,followed by 25% kresoxim-methyl SC.It indicated that 32.5%difenoconazole and kresoxim-methyl SC and 10% difenoconazole not only inhibited mycelial growth,but also significantly inhibited conidia germinations.Contrast to traditional fungicides such as carbendazim and mancozeb,difenoconazole and kresoxim-methyl had advantage on controlling Rhizoctonia solani of Acanthopanax senticosus.
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备注/Memo
基金项目: 黑龙江省森工总局资助项目(sgzjY2010014)