5种杀菌剂对甘草生长及菌根效应的影响  

Effect of five fungicides on growth of Glycyrrhiza uralensis and efficiency of mycorrhizal symbiosis

作　　者：李鹏英[1] 杨光[1] 周修腾[1] 周良云[1] 邵爱娟[2] 陈美兰[1] 

机构地区：[1]中国中医科学院中药资源中心道地药材国家重点实验室培育基地,北京100700 [2]中国中医科学院中药研究所,北京100700

出　　处：《中国中药杂志》2015年第23期4591-4596,共6页China Journal of Chinese Materia Medica

基　　金：国家中医药管理局中医药行业科研专项(201407005);中国中医科学院自主选题项目(Zz0708116)

摘　　要：通过分析多抗霉素、井冈霉素、甲基托布津、百菌清和多菌灵5种杀菌剂对甘草生长及菌根效应的影响,旨在选出对菌根效应影响最小的杀菌剂,为甘草菌根化栽培提供指导。实验以盆栽甘草为材料,以田间常用浓度灌施不同杀菌剂,处理60 d后测定各处理组的侵染率、侵染密度、生物量指标、光合指标以及有效成分含量。实验结果表明,多菌灵对甘草菌根效应抑制最强,能够显著抑制菌根侵染率,显著抑制甘草的实际光合效率,显著抑制甘草的株高、叶片数、地上鲜重和地下鲜重等生物量指标,对有效成分的含量也有一定的抑制作用;多抗霉素对菌根效应的抑制作用最弱,对菌根侵染率、多个甘草生物量指标以及实际光合效率均无显著影响;其他杀菌剂对菌根效应也有一定的抑制作用,抑制程度介于多菌灵和多抗霉素之间。作者认为杀菌剂对菌根效应的抑制程度可能与杀菌剂的种类有关,建议田间在防治病害时尽量选择多抗霉素等生物杀菌剂。In order to obtain the fungicides with minimal impact on efficiency of mycorrhizal symbiosis,the effect of five fungicides including polyoxins,jinggangmycins,thiophanate methylate,chlorothalonil and carbendazim on the growth of medicinal plant and efficiency of mycorrhizal symbiosis were studied. Pot cultured Glycyrrhiza uralensis was treated with different fungicides with the concentration that commonly used in the field. 60 d after treated with fungicides,infection rate,infection density,biomass indexes,photosynthetic index and the content of active component were measured. Experimental results showed that carbendazim had the strongest inhibition on mycorrhizal symbiosis effect. Carbendazim significantly inhibited the mycorrhizal infection rate,significantly suppressed the actual photosynthetic efficiency of G. uralensis and the most indicators of biomass. Polyoxins showed the lowest inhibiting affection.Polyoxins had no significant effect on mycorrhizal infection rate,the actual photosynthetic efficiency of G. uralensis and the most indicators of biomass. The other three fungicides also had an inhibitory effect on efficiency of mycorrhizal symbiosis,and the inhibition degrees were all between polyoxins＇ s and carbendazim＇s. The author considered that fungicide＇s inhibition degree on mycorrhizal effect might be related with the species of fungicides,so the author suggested that the farmer should try to choose bio-fungicides like polyoxins.

关 键 词：杀菌剂 甘草 菌根效应 农药 

分 类 号：S482.2[农业科学—农药学] S567.71[农业科学—植物保护]