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小麦丛矮病俗称“坐坡病”属病毒性病害,是由灰飞虱传毒引起的。此病除危害小麦外,还危害大麦、谷子等禾本科作物,并能侵染一些禾本科杂草。小麦丛矮病是一种毁灭性病害,轻者减产3O％,一般减产50％以上,重者绝收。此病对小麦危害面积逐年扩大,减产程度逐年增加,必须引起高度重视,切实加强防治。一、病株症状小麦感病后,上部叶片有黄绿相间的条纹,分蘖显著增多,矮化丛生不长,形成明显的丛矮状,小麦播后20天左右即可出现病状。在麦叶上最初的症状
Common wheat dwarf disease known as “Slope disease” is a viral disease, caused by the brown planthopper poisoning. In addition to endangering wheat disease, this disease also endangered barley, millet and other grass crops, and can infect some grass weeds. Wheat clumpy dwarf disease is a devastating disease, the light reduction of 3O%, the general reduction of more than 50%, those who receive the heavy. The disease on the area of wheat increased year by year, reduced the degree of increase year by year, we must attach great importance to effectively strengthen prevention and control. First, the disease symptoms Wheat disease, the upper leaves with yellow-green and white stripes, significantly increased tillers, short dwarf clusters, forming a clear dwarf, 20 days after sowing the wheat can be symptoms. The initial symptoms on the wheat leaves