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以葡萄霜霉病生防菌株BCJB01和BMJBN02为供试菌,分别在山东省济南和烟台地区的葡萄园对不同葡萄品种的霜霉病进行了小区防治试验,以期明确BCJB01和BMJBN02对不同葡萄品种霜霉病的实际防治效果,探寻提高BCJB01和BMJBN02菌剂对葡萄霜霉病的防治技术,为其制剂的推广应用提供参考依据。结果表明:在霜霉病发病初期,20mL·L~(-1)芽孢杆菌BCJB01和BMJBN02悬浮剂对“泽山一号”的防治效果分别为84.05%和73.30%;20mL·L~(-1)芽孢杆菌BCJB01和BMJBN02悬浮剂交替使用对“蛇龙珠”的防效在62%以上;20 000 mg·L~(-1)?BCJB01粉剂+0.1%助剂对“蛇龙珠”的防效为81.31%;6 667mg·L~(-1)?BCJB01粉剂+0.1%助剂对“蛇龙珠”的防效为61.29%。在霜霉病进入盛发期后,20 000mg·L~(-1)BCJB01粉剂+0.1%助剂对“蛇龙珠”的防效仍在80%以上;6 667mg·L~(-1)芽孢杆菌BCJB01粉剂对“夏黑”的防治效果为62.65%。表明BCJB01和BMJBN02悬浮剂及BCJB01粉剂+0.1%助剂对葡萄霜霉病均有良好的防效,可作为防治葡萄霜霉病的交替生物药剂。
Taking grape downy mildew prevention and cure strains BCJB01 and BMJBN02 as tested bacteria, the prevention and cure of downy mildew of different grape varieties were carried out in the vineyards of Jinan and Yantai, Shandong Province respectively in order to clarify the effects of BCJB01 and BMJBN02 on different grape varieties Downy mildew in the actual control effect, to explore to improve BCJB01 and BMJBN02 fungicide grape downy mildew prevention and control technology, to promote the application of its preparation provide a reference. The results showed that in the early stage of downy mildew disease, the control effects of 20mL · L ~ (-1) Bacillus sp. BCJB01 and BMJBN02 were 84.05% and 73.30% on “Zeshan No.1”, 20mL · L ~ ( -1) Alternate use of Bacillus BCJB01 and BMJBN02 suspending agent is over 62% effective against “snake dragonfly”; 20 000 mg · L -1 BCJB01 powder + 0.1% The control effect of BCJB01 powder + 0.1% additive was 61.29%. After downy mildew, the control effect of 20 000 mg · L -1 BCJB01 powder + 0.1% additive was still more than 80%, while 6 667 mg · L -1 ) Bacillus BCJB01 powder on the “summer black” control effect of 62.65%. The results showed that BCJB01 and BMJBN02 suspending agent and BCJB01 powder plus 0.1% auxiliaries had good control effect on grape downy mildew and could be used as alternative biological agents to control grape downy mildew.