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中国农学通报 ›› 2022, Vol. 38 ›› Issue (2): 78-86.doi: 10.11924/j.issn.1000-6850.casb2021-0458

所属专题: 生物技术 植物保护

• 植物保护 • 上一篇    下一篇

荸荠秆枯病药剂筛选与防治研究

赖小芳1(), 余山红1(), 杨昌亮2, 李林3, 程序2, 陈孝赏1   

  1. 1浙江省台州市农业科学研究院,浙江临海 317000
    2浙江省台州市农业农村局,浙江台州 318002
    3浙江省农业农村大数据发展中心,杭州 310020
  • 收稿日期:2021-04-30 修回日期:2021-08-24 出版日期:2022-01-15 发布日期:2022-02-25
  • 通讯作者: 余山红
  • 作者简介:赖小芳,女,1963年出生,浙江临海人,正高级农艺师,研究方向:植物组织培养技术研究与应用、水生蔬菜新品种选育与栽培技术研究及示范推广。通信地址:317000 浙江省临海市七一河路57号 台州市农业科学研究院,E-mail: lxf19633@163.com
  • 基金资助:
    浙江省台州市科技计划农业类项目“荸荠秆枯病综合防治技术研究及应用”(180lny08)

Fungicide Screening and Control of Stem Blight of Eleocharis dulcis

LAI Xiaofang1(), YU Shanhong1(), YANG Changliang2, LI Lin3, CHENG Xu2, CHEN Xiaoshang1   

  1. 1Taizhou Academy of Agricultural Sciences, Linhai, Zhejiang 317000
    2Taizhou Bureau of Agriculture and Rural Affairs, Taizhou, Zhejiang 318002
    3Zhejiang Agricultural and Rural Big Data Development Center, Hangzhou 310020
  • Received:2021-04-30 Revised:2021-08-24 Online:2022-01-15 Published:2022-02-25
  • Contact: YU Shanhong

摘要:

为了筛选及评价不同药剂的功效,采用菌丝生长速率法测定荸荠秆枯病菌对41种杀菌剂的敏感性,结果显示:250 g/L丙环唑乳油等18种杀菌剂抑菌效果最好,抑菌效率达100%;其次是43%氟菌·肟菌酯悬浮剂、560 g/L嘧菌·百菌清悬浮剂、250 g/L嘧菌酯悬浮剂,抑菌效率分别为99.1%、98.3%、95.1%。田间药剂防治筛选结果表明:560 g/L嘧菌·百菌清悬浮剂、250 g/L嘧菌酯悬浮剂对荸荠秆枯病的控制效果最好,均达74.0%以上,病害对产量影响较少;其次是10%苯醚甲环唑水分散粒剂与43%氟菌·肟菌酯悬浮剂,控制效果在66.0%以上,对产量有一定的影响;发病最严重的是CK,发病率为94.2%,病情指数为96.14,对产量、品质影响严重。

关键词: 荸荠, 秆枯病, 药剂筛选, 控制效果, 发病率, 产量

Abstract:

To screen and evaluate the efficacy of different fungicides, the susceptibility of 41 fungicides to Cylindrosporium eleocharidis was measured by mycelium growth rate method. The results indicated that 18 fungicides had good antibacterial effect, among them, 250 g/L propiconazole EC had the best efficacy of 100%, followed by 43% fluopyram-trifloxystrobin SC, 560 g/L azoxystrobin-chlorothalonil SC and 250 g/L azoxystrobin SC, which had the efficacy of 99.1%, 98.3% and 95.1%, respectively. Field efficacy test showed that 560 g/L azoxystrobin-chlorothalonil SC and 250 g/L azoxystrobin SC had the best control effect on stem blight of Eleocharis dulcis, both above 74.0%, and the yield was less affected. 10% difenoconazole water dispersible granule and 43% fluopyram-trifloxystrobin SC had a control effect above 66.0%, but had certain influence on the yield. As to the incidence rate, that of CK was the most serious, with an incidence rate of 94.2% and a disease index of 96.14, causing serious effect on yield and quality.

Key words: Eleocharis dulcis, stem blight, fungicide screening, control effect, incidence rate, yield

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