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1、玉米种子1)赤霉病。病种粒表皮被红色或粉红色丝状物包围。种粒发芽时常长出微黄色及粉红色的菌丝体。2)圆斑病。籽粒和果穗轴呈黑色,籽粒黑腐干缩,一般果穗中部或顶尖受害,病部凹陷,果穗弯曲,籽粒长满黑色霉层。3)干腐病。病粒外部呈褐色或黑色,病粒缩小、干腐,发芽时有白色霉状物包围着,有时在病粒下部附着黑色粒状物。 1、玉米种子1)赤霉病。病种粒表皮被红色或粉红色丝状物包围。种粒发芽时常长出微黄色及粉红色的菌丝体。2)圆斑病。籽粒和果穗轴呈黑色,籽粒黑腐干缩,一般果穗中部或顶尖受害,病部凹陷,果穗弯曲,籽粒长满黑色霉层。3)干腐病。病粒外部呈褐色或黑色,病粒缩小、干腐,发芽时有白色霉状物包围着,有时在病粒下部附着黑色粒状物。
1, corn seeds 1) scab. The diseased seed coat is surrounded by red or pink filaments. Seed germination often grow yellowish and pink mycelium. 2) Spot blotch. The grain and the axis of the ear are black, the grains are black-rotted, the central or top ear of the ear is damaged, the diseased part of the ear is buckled, the ear is curved, and the grain is covered with black mold layer. 3) Dry rot. Granules outside the brown or black, narrowing of the sick, dry rot, germination when surrounded by white moldy, and sometimes in the lower part of the particles attached to the black granules. 1, corn seeds 1) scab. The diseased seed coat is surrounded by red or pink filaments. Seed germination often grow yellowish and pink mycelium. 2) Spot blotch. The grain and the axis of the ear are black, the grains are black-rotted, the central or top ear of the ear is damaged, the diseased part of the ear is buckled, the ear is curved, and the grain is covered with black mold layer. 3) Dry rot. Granules outside the brown or black, narrowing of the sick, dry rot, germination when surrounded by white moldy, and sometimes in the lower part of the particles attached to the black granules.