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从上海市郊等地土壤中分离的120株细菌菌株,通过软腐病致病性测定和平皿相互拮抗试验,获得3株拮抗菌株。其中从健康大白菜植株根部分离的1株菌株90-2-1-2在平皿上显示出对软腐病菌有强烈的抑制作用,而软腐细菌对它的反拮抗作用却很微弱。利用这株菌株浸种和灌根,田间防效可达70%左右。
From the soil in the suburbs of Shanghai and other places isolated 120 strains of bacteria, through the pathogenicity test of soft rot and plate mutual antagonistic test, access to three antagonistic strains. One strain 90-2-1-2 isolated from the roots of healthy Chinese cabbage plants showed a strong inhibition on the soft rot fungi on the plate, while the soft anther antagonistic effect was very weak. Using this strain of seed soaking and irrigation, field control effect of up to 70%.