The indoor experiment and field test of Marine bacterium AiL3 were carried out to study the effect on the suppression of the banana Fusarium-wilt disease and the growth of banana seedlings. The results showed that the number of leaves, the plant height, photosynthetic rate and transpiration rate of the tested banana plants were promoted significantly after innoculated with strain AiL3 in indoor and field tests compared to the control treatment. The control efficacies of AiL3 against Fusarium Wilt was 100% with the test indoor for six months. The control efficacies were 72.71% and 46.32% after 8 months with the indoor test and field test, respectively. It was suggested that the bacterial strain AiL3 could control the banana Fusarium wilt and promote growth of banana.%采用室内盆栽和大田小区试验对海洋细菌AiL3菌株防治香蕉枯萎病作用及对香蕉的促生效果进行测定.结果表明:菌株处理后盆栽试验和大田试验中的香蕉苗叶片数、株高、光合速率和蒸腾速率等均明显高于对照；AiL3菌株盆栽试验处理6个月后对香蕉枯萎病的防治效果达100％,大田小区试验菌株处理8个月后对香蕉枯萎病的防治效果分别为72.71％和46.32％.表明AiL3菌株对香蕉植株有一定的防病促生作用.
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