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甜菜立枯病病原菌在高温高湿条件下以Pythiumdebaryanum为主 ,其次为Rhizoctoniasolani,在低温干旱条件下以Fusariumsolani为主 ,其次为R.solani。不同杀菌剂对甜菜立枯病主要致病菌的抑菌效果不同 ,通过农药的合理混配可明显提高防病效果。二元混配制剂L1、三元混配制剂S6 处理甜菜种子 ,甜菜立枯病病情指数显著低于福美双处理 ,对甜菜立枯病防效高、效果稳定
The pathogen of sugar beet stubble blight was Pythium debaryanum under the conditions of high temperature and high humidity, followed by Rhizoctonia solani, Fusarium solani under the condition of low temperature and drought, followed by R. solani. Different bactericides have different bacteriostatic effects on the main pathogenic bacteria of beet blight. The reasonable combination of pesticides can obviously improve the effect of preventing diseases. Binary mixed formulation L1, ternary mixed formulation S6 beet seed treatment, sugarbeet damping off disease index was significantly lower than the United States and the United States biuret treatment of beet blight control effect is high, the effect is stable