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从植物的根际土壤中分离一株具有促生、生产几丁酶和立枯丝核菌能力的细菌并鉴定为产酶溶杆菌。本试验在盆栽条件下通过与化学合成杀菌剂的对照,对该细菌对水稻纹枯病的防治效果进行了研究。试验结果表明,T1(分别于病原菌接种2 d前和定植33、44 d后施用产酶溶杆菌的发酵液)处理表现出最大的抑制病害能力;T1与对照组比较,在移植后的44和65 d,水稻叶片上的水稻纹枯病症状分别降低了32.8%和60.8%;T1的叶面积和干叶重也高于其他处理。然而,在研究期间,发现在各处理间水稻植株分蘖数量并没有发现显著差异。
From the plant rhizosphere soil isolated with a plant growth and production of chitinase Rhizoctonia Rhizoctonia bacteria and identified as Bacillus licheniformis. In this experiment, the control effect of this bacterium on rice sheath blight was studied by contrast with chemical synthetic fungicide under potted condition. The results showed that T1 (the fermentation broth of Saccharomyces cerevisiae was applied two days before the inoculation of pathogen and 33 days and 44 days after colonization, respectively) showed the greatest disease-inhibiting ability. T1 compared with the control group, After 65 d, the symptoms of rice sheath blight decreased by 32.8% and 60.8%, respectively. The leaf area and dry leaf weight of T1 were also higher than those of other treatments. However, no significant differences were found in the number of tillers in rice plants between treatments during the study period.