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玉米茎腐病俗称青枯病,因发病玉米植株成熟期遇雨后天气暴晴,地上部变为青灰色干枯状而得名。我省属重病区,一般年份发病率达10%左右,重症地块可达50%以上,且有逐年加重的趋势。1996年夏季多雨,此病普遍发生,尤其在保定的满城、清苑、高阳;衡水的深县、安平;邯郸的永年;沧州的河间等地,在发病期大片的地块出现青枯、黄枯症状,给产量造成很大的损失。1997年夏季干旱少雨,发病较轻,但仍在晋县、怀来、张家口、清苑等地发现达50%~80%以上的重病田。茎腐病由于在玉米成熟期发病,易被认为是早熟而被忽视,此时籽粒灌浆未满,千泣重偏低,再加上茎基腐烂,遇风倒伏,常减产10%~50%。
Corn stalk rot known as bacterial wilt, due to the onset of maize plants in the stormy weather after the storm, the ground into the gray-green dry named. The province is a serious ward, the general incidence of about 10% of years, severe land up to 50% or more, and have increased year by year trend. The rainy summer of 1996, the disease occurred in general, especially in Baoding City, Qing Court, Goyang; Hengshui deep county, Anping; Handan’s Yongnian; Cangzhou Hejian and other places, , Yellowish yellow symptoms, to produce a great loss. In the summer of 1997, with less drought and less incidence, it was still found in Jinxian, Huailai, Zhangjiakou, Qingyuan and other places where severe diseases up to 50% -80% were found. Stalk rot due to the incidence of maize in the mature, easily considered as precocious and neglected, when the grain filling is not full, one thousand Qi heavy weight, coupled with stem rot, met the wind lodging, often cut 10% to 50% .