【作者】 徐进； 何礼远； 滕建勋； 孟兆军；

【Author】 XU Jin~1 HE Li-yuan~1 TENG Jian-xun~2 MENG Zhao-jun~3 (1.Plant Protection Institute of CAAS,Beijing 100094;2.Southern Potato Research Center,Hubei Enshi 445000;3.Hebei Crop Institute for Cooling Zone,Hebei Zhangbei 076450)

【机构】 中国农业科学院植保研究所； 南方马铃薯研究中心； 河北高寒作物研究所；

【摘要】 将对青枯病原细菌具有离体抑菌活性的枯草芽孢杆菌(Bacillus sub- tilis)菌株0702-2、GP7-13制成粉状制剂,用于马铃薯种薯播前处理,进行田间小区试验。在湖北恩施病地上对马铃薯青枯病的防效,GP7—13可达73．9% ～89．7%,0702可达60．9%～88．2%；在北京郊区南口和河北张北县的无病地上对马铃薯的促生增产作用,GP7-13可达17．3%～60．3%：0702可达 26．9%～61．2%。此二生防菌剂还可明显增加每穴马铃薯主茎数和大中薯率。更多还原

【Abstract】 Two Bacillus subtilis isolates GP7-13 and 0702,which showed inhibi- tion activity on Ralstonia solanacearum in vitro,were applied for treatment of potato seed- tubers prior to planting in field tests.The two bacillus preparations performed good control effect in BW infected fields in Enshi region of Hubei province:GP7-13 showed BW control effective rate ranged from 73.9%～89.7%, whereas 0702 gave 60.9%～88.2% control ef- fects.These preparations gave statistically significant yield increasing effect in BW free pota- to cropping areas at Zhangbei county of Hebei province and at Nankou of Beijing suburbs. The increase rate of fresh tuber weight ranged from 17.3%～60.3% in GP7-13 treatment plots and from 26.9%-61.2% in 0702 treatment plots,respectively.These two bacillus preparations might significantly increase main stem numbers per hill and commercial tuber rate.更多还原