放线菌剂与腐植酸钾对魔芋抗病促生效果研究  

Study of Combined Application of Actinomycetes Biocontrol Agents and Potassium Humate on Disease Resistance and Growth-promoting Effect of Amorphophallus Konjac

作　　者：张忠良[1] 刘列平 何斐[1] 

机构地区：[1]西北农林科技大学林学院,杨凌712100 [2]陕西省岚皋县魔芋局,岚皋725400

出　　处：《腐植酸》2014年第4期45-49,共5页Humic Acid

基　　金：国家林业局重点科技推广项目(魔芋产业化配套技术2010-38);财政部农业科技体系建设项目(XTG2014038)资助

摘　　要：分别以不施菌剂、不施腐植酸钾为对照，采用小区试验，探讨生防放线菌剂与腐植酸钾配施条件下二者对魔芋的防病促生作用。试验结果表明：（1）？当腐植酸钾与3号放线菌配施时，具有较强的防病促生作用。30克/株、60克/株、90克/株腐植酸钾分别配施3号菌剂时，与不施腐植酸钾对照相比，魔芋病害相对防效、增产率及增长系数分别提高了9.8%～41.6%、17.1%～76.3%和20.1%～64.2%。其中，60克/株腐植酸钾配施3号菌剂时效果最明显。（2）？当放线菌剂与腐植酸钾配施时，具有较强的防病促生作用。1、2、3号放线菌剂与60克/株腐植酸钾配施，与不施菌剂对照相比，魔芋病害相对防效、增产率及增长系数分别提高了11.7%～89.7%、33.3%～150.9%和38.5%～175.0%。其中2、3号放线菌剂与60克/株腐植酸钾配施处理效果较好。研究表明，腐植酸钾与放线菌剂配施能促进魔芋生长，提高魔芋产量，降低发病率。With no actinomycetes and potassium humate treatments as control（CK）, the effect of actinomycetes and potassium humate on disease resistance and growth-promoting of Amorphophallus konjac in the plot trials were evalu-ated. Results showed that：（1） Combined application of potassium humate and actinomycetes No.3 had strong disease resistance and growth-promoting effect. Under 30, 60, 90 gram per plant of potassium humate combined with actinomy-cetes No.3 treatment, biocontrol effect increased by 9.8%~41.6%, yield increased by 17.1%~76.3%and growth factor increased by 20.1%~64.2% compared with the group without potassium humate. Among which, the combined ap-plication of 60 gram per plant of potassium humate and actinomycetes No.3 had the most obvious effect. （2） Combined application of actinomycetes and potassium humate had signiifcant anti-disease and growth-promoting effect. Three kind of actinomycetes combined with 60 gram per plant of potassium humate treatment, biocontrol effect increased by 11.7%~89.7%, yield increased by 33.3%~150.9% and growth factor increased by 38.5%~175.0% compared with the group without actinomycetes. In particular, No. 2 and No. 3 actinomycetes had obvious effect. These results sug-gested that the combined application of actinomycetes and potassium humate not only promoted A. konjac growth and yield, but also reduced the incidence of disease.

关 键 词：魔芋 放线菌 腐植酸钾 抗病促生 

分 类 号：S436.32[农业科学—农业昆虫与害虫防治]