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为选择合适的抑菌剂和适宜的浓度来防治不同地区的烟草青枯病,采用平板菌落计数法测定了新型抑菌剂K系(K1、K2、K3)对我国46个不同地区烟草青枯菌的抑制率,同时比较了K系抑菌剂与农用链霉素的抑菌效果。结果表明:1)100 mg/L K1对印江等27个县市,100 mg/L K2对遵义县等30个县市,50 mg/L K3对莒县等25个县市,254.5 mg/L农用链霉素对保山等28个县市青枯菌的抑制率达100%。2)50 mg/L K1对金沙等15个县市,50 mg/L K2对仁怀等21个县市,50 mg/L K3对江口等23个县市的青枯菌抑制率显著高于同浓度农用链霉素;100 mg/L K1对洋溪乡等,100 mg/L K2对江口等青枯菌的抑制率显著高于同浓度农用链霉素。
In order to select appropriate bacteriostat and suitable concentration to control tobacco bacterial wilt in different regions, the effect of new bacteriostat K series (K1, K2, K3) on tobacco bacterial wilt in 46 different regions of China Inhibitory rate of bacteria, at the same time compared the antibacterial effect of K series bacteriostat and streptomycin. The results showed as follows: 1) 100 mg / L K1 was effective in 27 counties and cities such as Yinjiang, with 100 mg / L K2 in 30 counties and cities such as Zunyi, 50 mg / L K3 and 25 counties in Pixian, 254.5 mg / L agricultural streptomycin Baoshan 28 counties such as R. solanacearum inhibition rate of 100%. 2) 50 mg / L K1 against R. solanacearum in 15 counties and cities such as Sands, 50 mg / L K2 against 21 counties such as Renhuai, 50 mg / L K3 to 23 counties such as Jiangkou, The same concentration of streptomycin, 100 mg / L K1 to Yangxi, 100 mg / L K2 against R. solani was significantly higher than that of the same streptomycin.