XQ生防菌防治烟草青枯病研究

Control of XQ Bio-control Bacteria on Tobacco Bacterial Wilt

为了研究XQ生防菌对烟草青枯病的防治效果,以云烟87为供试烤烟品种,通过大田试验探讨了喷施XQ生防菌对烤烟农艺性状、烟草青枯病防效、烟叶物理特性、化学成分及经济效益的影响。结果表明:施用XQ生防菌后烤烟的长势旺盛,烤烟青枯病发病率降低、病情指数降低,移栽120 d后相对防效为81.87%;烤后烟叶物理特性较好,烟叶内部化学成分更趋协调,中上等烟比例和均价有所提升;同时,烤烟的产量和产值分别比对照高258.71 kg/hm^2和13 094.69元/hm^2,经济效益得到显著提高。这说明XQ生防菌制剂对烤烟青枯病的防治效果较好。

In order to study the control effect of XQ bio-control bacteria on the tobacco bacterial wilt, taking Yunyan 87 as test material,the influence of tobacco agronomic traits, tobacco bacterial wilt control effect, physical properties and chemical composition of tobaccoleaf, and the economic benefits were analyzed through field experiment.The results showed that the application of XQ bio-control bacteriaflue-cured tobacco had vigorous growth vigor, low bacterial wilt incidence, the relative control effect was 81.87% after transplanting 120 d.After baking tobacco had good physical properties, tobacco chemical composition became more internal coordination, and the proportionof superior tobacco and average price increased. Meanwhile, Flue-cured tobacco yield and output value were higher than control by 258.71kg/hrn2 and 13 094.69 yuan/hm2（RMB）, respectively, the economic benefits of flue-cured tobacco improved significantly. This showedgood effect spraying XQ bio-control bacteria to control flue-cured tobacco bacterial wilt.