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作者	单位
杨利飒，贾瑞敏，王保通，王阳	（1.蓝田县农业技术推广中心，陕西蓝田 710500； 2.西北农林科技大学植物保护学院，陕西杨凌 712100）

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中文摘要:

为探究生防细菌甲基营养型芽胞杆菌Lw-6与化学药剂复配对小麦条锈病的防治效果，以小麦条锈病菌Puccinia striiformis f. sp. tritici（Pst）夏孢子为靶标菌，通过相容性试验筛选出可与菌株Lw-6复配的化学药剂，并利用盆栽试验筛选出最佳复配浓度，最后通过温室和大田试验测定其防效和促生效果。结果表明，烯唑醇（Di）与菌株Lw-6相容性最佳，128 mg·L^-1Di与Lw-6发酵原液复配对小麦条锈病的盆栽防效和田间防效分别为92.78%和86.22%，均高于Lw-6或Di单独使用的防效。Lw-6与Di复配处理后小麦千粒重、产量显著提高，其中6 500 mg·L^-1的Lw-6粉剂与128 mg·L^-1Di复配的植保贡献率为24.98%。综上所述，Lw-6与烯唑醇复配可以有效防治小麦条锈病，具有很好的应用潜力。

英文摘要:

In order to investigate the control efficacy of the combination of Bacillus methylotrophicus Lw-6 and chemical fungicides against wheat stripe rust, Puccinia striiformis f. sp. tritici(Pst) urediniospores were used as the target fungus, and strain Lw-6 was screened through antagonistic tests in vitro. The chemical fungicide used in combination with Lw-6 was selected by compatibility testing, and the optimal concentration was selected by greenhouse pot tests. Finally, the control and growth promotion effects were determined by greenhouse pot tests and field test. The results showed that diniconazole had the best compatibility with strain Lw-6, and the combined application of 128 mg·L^-1 Di and Lw-6 fermentation liquid achieved 92.78% and 86.22% control efficacy against wheat stripe rust in pot experiments and field trials, respectively, which were higher than the controlling effects of using individual diniconazole or Lw-6. In addition, the 1 000-grain weight and yield of wheat were significantly increased after compound treatment, and the contribution rate of plant protection of 6 500 mg·L^-1 Lw-6 powder combined with 128 mg·L^-1 diniconazole was 24.98%. In summary, the combination of Lw-6 and diniconazole can effectively control wheat stripe rust, and it has promising application potential.

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