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玉米粗缩病是一种毁灭性病害,被农民称为“玉米癌症”。近几年,该病在我省部分地区呈明显上升趋势,对玉米生产造成严重威胁,单株减产高达70%—100%,农民朋友们应及早预防及时防治。一、发病症状玉米整个生育期间均可感染发病,苗期受害最重。玉米出苗后染病,植株心叶出现扭曲,病叶浓绿,叶片短厚,硬而脆,密集丛生,叶背面叶脉上出现蜡白色条状突起,植株出现死苗、弱苗,一般需要毁种。玉米3—5叶期染病,植株上部节间
Corn is a devastating disease, which is called “corn cancer” by peasants. In recent years, the disease showed a clear upward trend in some areas in our province, posing a serious threat to the production of corn. As a result, the output per plant was as high as 70% -100%. Farmers and friends should prevent and prevent as soon as possible. First, the incidence of symptoms of corn throughout the growing period of infection can be infected, the heaviest seedling victims. Maize emergence after the disease, the plant heart leaves appear distorted, sick leaves dark green, short thick leaves, hard and brittle, dense clusters of leaves on the back of the veins appear waxy white bar-like protrusions appear dead plants, weak seedlings, the general need to destroy . 3-5 leaves of corn disease, the upper plant internodes