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秋蚕僵病的发病原因及防控措施

刘程哲

NONGMIN ZHIFUZHIYOU YUEKAN（2019）

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Abstract
一、秋蚕僵病发生的症状 秋蚕感染僵病后食欲减退,行动不活泼,蚕体出现各种病斑,有的不出现病斑,刚死时蚕体柔软,可以任意绕折,皮肤不易破,后蚕体逐渐僵硬,白僵呈桃红色,2天后,蚕体遍布白毛和白粉.眠前发病,病蚕多呈半蜕皮或不蜕皮蚕.蚕感染白僵菌后7天内死亡,对于小蚕潜伏期短,死亡的比较快.
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