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为筛选甘蔗凤梨病防治药剂,寻求最佳使用技术方法,结合新植蔗下种,采用蔗种单芽包衣、双芽包衣、双芽浸种等3种方式对28.7%精甲霜灵·咯菌腈·噻虫嗪FS防治甘蔗凤梨病效果进行田间评价。结果表明,28.7%精甲霜灵·咯菌腈·噻虫嗪FS蔗种双芽包衣和双芽浸种2种处理都能有效防治甘蔗凤梨病。28.7%精甲霜灵·咯菌腈·噻虫嗪FS 942~1605 mL/hm2蔗种双芽包衣防效为58.69%~61.20%、28.7%精甲霜灵·咯菌腈·噻虫嗪FS 1000~1500倍液蔗种双芽浸种处理防效为51.51%~54.70%,明显优于对照农药50%多菌灵WP,且对甘蔗安全。甘蔗凤梨病高发区,可结合当地甘蔗生产实际,于甘蔗下种期,采用28.7%精甲霜灵·咯菌腈·噻虫嗪FS防治甘蔗凤梨病,蔗种包衣处理剂量以942 mL/hm2为宜,蔗种浸种处理药液浓度以1500倍为宜。
In order to select the best anti-cane pineapple disease prevention and cure agent, the best technology and technology were selected, and 28.7% metformin was combined with three kinds of new sugarcane species under the conditions of single-bud coating, double-bud coating and double- Fludioxonil · Thiamethoxam FS for control of sugarcane pineapple disease effect field evaluation. The results showed that 28.7% of metacloprid, fludioxonil and thiamethoxam FS could effectively prevent and cure sugarcane pineapple disease by double-bud coating and double-bud soaking. 28.7% Metalaxyl fludioxonil · Thiamethoxam FS 942 ~ 1605 mL / hm2 Sugarcane double bud coating control effect of 58.69% ~ 61.20%, 28.7% Metalaxyl fludioxonil · Thiamethoxam FS 1000 ~ 1500 times liquid sugarcane seedling double bud control effect was 51.51% ~ 54.70%, significantly better than the control pesticide 50% carbendazim WP, and the safety of sugarcane. In the high incidence area of sugarcane pineapple disease, sugarcane pineapple disease could be treated with 28.7% metformin, fludioxonil and thiamethoxam under the actual sugarcane production stage in combination with the actual production of sugarcane. The treatment dose of sugarcane seed coating was 942 mL / hm2 is appropriate, sugarcane seed soaking solution concentration of 1500 times is appropriate.