4种化学药剂对黄瓜抗枯萎病的诱导抗性比较  

Comparison of Induced Resistance to Cucurbits Fusarium Wilt by Four Chemicals

作　　者：柳利龙 梁巧兰 张爱琴 张环[1,2] LIU Lilong;LIANG Qiaolan;ZHANG Aiqin;ZHANG Huan(Animal Husbandry,Pasture and Green Agriculture Institute,Gansu Academy of Agricultural Sciences,Lanzhou Gansu 730070,China;Institute of Agricultural Quality Standards and Testing Technology,Gansu Academy of Agricultural Sciences,LanzhouGansu 730070,China;College of Plant Protection,Gansu Agricultural University,Lanzhou Gansu 730070,China)

机构地区：[1]甘肃省农业科学院畜草与绿色农业研究所,甘肃兰州730070 [2]甘肃省农业科学院农业质量标准与检测技术研究所,甘肃兰州730070 [3]甘肃农业大学植物保护学院,甘肃兰州730070

出　　处：《甘肃农业科技》2018年第7期48-51,共4页Gansu Agricultural Science and Technology

基　　金：甘肃省农业科学院中青年基金项目(2015GAAS24);甘肃省青年科技基金计划项目(17JR5RA183)

摘　　要：利用生长速率法测定了纳米硅、30%DT杀菌剂可湿性粉剂、20%病毒A可湿性粉剂和50%甲霜铜可湿性粉剂4种化学药剂对黄瓜枯萎病菌的抑菌活性,结果发现4种化学药剂对黄瓜枯萎病菌的菌丝生长均无直接抑制作用。利用4种化学药剂诱导黄瓜幼苗抗枯萎病效果的测定结果表明,30%DT杀菌剂可湿性粉剂的诱导抗性效果最好,最高为10.93%;50%甲霜铜可湿性粉剂处理不仅没有诱导抗性效果,反而促进了病害的发生;纳米硅与20%病毒A可湿性粉剂的诱导抗性效果处于二者之间,最高分别为4.08%和6.24%。The growth rate method was used to determine the antibacterial activity of nano-silicon,30% DT bactericide wettable powder,20% virus A wettable powder and 50% metalaxyl-copper succinate wettable powder against Fusarium oxysporum f sp.cucumerinum. The results show that four chemical agents had no direct inhibition on mycelial growth of Fusarium oxysporum f sp.cucumerinum. The effect of 4 chemical agents on anti-blight of cucumber seedlings was determined. The experiment of induction indicated that 30% DT bactericide wettable powder exhibited the best induction effect,and the maximum was 10.93%. The treatment with 50% metalaxyl-copper succinate wettable powder not only did not exhibit effects of inducement,but promoted the occurrence of disease. The highest values of induction effects of nano-silicon and 20% virus A wettable powder were 4.08% and 6.24%,respectively.

关 键 词：黄瓜枯萎病 化学药剂 抗性 诱导抗性效果 

分 类 号：S436.421.1[农业科学—农业昆虫与害虫防治]