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稻粒黑粉病 Tilletia (Neovossia) horrida Tak.是杂交稻制种田的主要病害之一。在我县该病流行年分制种田病谷率高达50％以上,一般春、夏制种田发病较重。开花期是粒黑粉病的主要侵染期,孕穗期也可侵染。 笔者的试验,选用25％粉锈宁可湿性粉剂(江苏建湖农药厂)、3％井岗霉素水剂(福建浦城生化厂),按每亩用①粉锈宁75g;②井岗霉素200ml:⑧粉锈宁75g+井岗霉素200ml,3次重复,分别进行比较;各药剂均兑水50kg均匀喷雾;水稻品种为♀早珍汕A×♂含测64;在母本破口始穗期,加入“920”喷施;在蜡熟后期进行防效调查。
Tilletia (Neovossia) Horrida Tak. Is one of the major diseases in hybrid rice farming. In our county, the prevalence of disease epidemic disease Valley disease rate as high as 50%, the general spring, summer farming heavier. Flowering is the main infection period of grain powdery mildew, booting stage can also be infected. The author’s experiment, the selection of 25% triadimefon WP (Jiangsu Jianhu Pesticide Factory), 3% Jinggangmycin agent (Fujian Pucheng Biochemical Factory), according to per acre ① triadimefon 75g; ② Jinggangmycin 200ml: ⑧ Triptolide 75g + Jingangmycin 200ml, 3 times repeated, respectively, compared to each agent were watered 50kg uniform spray; rice varieties as early as Shantou A × ♂ containing test 64; 920 "spray; control effect in the wax after the investigation.