XU Wen-feng,GU Zhi-guang,REN Shi-wei,et al.Inhibitory Effect of Potassium Dihydrogen Phosphate on Pythium Causing Ginger Rhizome Rots[J].HEILONGJIANG AGRICULTURAL SCIENCES,2018,(07):60-63.[doi:10.11942/j.issn1002-2767.2018.07.0060]
亚磷酸二氢钾对生姜茎基腐病菌腐霉的抑制作用
- Title:
- Inhibitory Effect of Potassium Dihydrogen Phosphate on Pythium Causing Ginger Rhizome Rots
- 文献标志码:
- A
- 摘要:
- 由腐霉菌(Pythium myriotylum)引起的生姜茎基腐病是目前危害生姜生产的主要病害,为实现生姜茎基腐病的绿色防治,通过亚磷酸二氢钾的室内毒力测定,观察亚磷酸二氢钾对生姜茎基腐病原菌的抑制作用;采用菌丝生长速率法,测定亚磷酸二氢钾对生姜茎基腐病原菌腐霉以及立枯丝核菌等7种病原菌的抑菌效果。结果表明:亚磷酸二氢钾对小麦纹枯病菌、立枯丝核菌、白菜叶斑病菌、生姜茎基腐病原菌菌丝生长抑制效果较显著,其中亚磷酸二氢钾对生姜茎基腐病原菌菌丝生长抑制效果最好,其次是白菜叶斑病菌,4 g?L-1时抑菌率达84.4%,EC50=0.632 6 g?L-1。
- Abstract:
- Ginger rhizonme rot caused by Pythium myriotylum is the main disease that influence the production of ginger.In order to achieve green control of ginger rhizome stem,the inhibition effect of potassium dihydrogen phosphite on Pythium myriotylum was observed by the indoor toxicity using the mycelial growth rate method.The bacteriostatic effect of 7 pathogenic fungi such as Pythium myriotylum and Rhizoctonia solani,etc were also tested.The results showed that the inhibitory effect of potassium subhydrogen phosphate on the mycelium growth of Rhizoctonia zeae,Rhizoctonia solani,Alternaria alternata and ginger rhizome rot was significant.The inhibitory effect of ginger rhizome rot was the best,followed by Alternaria alternata,and the inhibition efficiency was 84.4% in 4 g?L-1,and the EC50 was 0.632 6 g?L-1.
参考文献/References:
[1]刘振伟,史秀娟.生姜茎腐病的研究进展[J].中国植保导刊,2008(10):12-14.
备注/Memo
收稿日期:2018-03-02基金项目:经济作物专用PGPR微生物肥料创制与产业化示范山东省重大科技专项(新兴产业)资助项目(2015ZDXX0502B02)。第一作者简介:徐文凤(1985-),女,硕士,工程师,从事农用微生物防治植物病害研究。E-mail:xuwenfeng@kingenta.com。通讯作者:范玲超(1974-),男,学士,高级工程师,从事微生物肥料研制及应用研究。E-mail:fanlingchao@kingenta.com。