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1.根据大白菜软腐病菌在土壤中存活和从幼苗根系入侵的特点,把过去以治防病为主的策略改变为以防止病菌从根系侵入为主的策略,并以生物学防治为主要内容之一。 2.在明确通过调节病害生态系统中微生物区系可以达到防病害目的的基础上,采用比较生态学的原理和方法,从大白菜根围分离到有益根围细菌—枯草杆菌B_1菌株,以其处理种子可以优先在植株根系定植,从而有效地减少了从根系侵入的病菌。
1. According to the characteristics of Chinese cabbage soft rot virus survived in the soil and invaded from the root of seedling, the strategy of disease prevention and control in the past was changed to the strategy of preventing invasion of germs from the root system, and biological control was the main One of the content 2. On the basis of explicitly controlling the microbial flora of the disease ecosystem to achieve the purpose of disease prevention, comparative ecological principles and methods were used to isolate the beneficial bacteria Bacillus subtilis B_1 from the root circumference of Chinese cabbage, Seeds can be preferentially colonized in the plant roots, effectively reducing germs that invade from the roots.