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2001年7月下旬至8月上中旬,运城市盐湖区棉花红叶枯病暴发流行,发生面积9400hm2。所有棉田在1个月之内普遍发病,半数以上的棉田病株率50%~70%,严重的田块达100%,棉株叶片脱落成光秆,仅剩几个棉铃,严重影响棉花的产量和品质。棉花红叶枯病又称棉?
From late July to mid-August 2001, the outbreak of cotton leaf blight in the salt lake area of Yuncheng City was prevalent, with an area of 9400hm2. All cotton fields have a common incidence within 1 month. More than half of the cotton plants have a disease rate of 50% -70% and severe fields of 100%. The leaves of cotton plants fall into light stalks and only a few bolls remain, which seriously affects the cotton Yield and quality. Cotton leaf blight also known as cotton?