经培养观察结果:浙贝灰霉病的菌核为圆形或不规则形,黑色,大小φ0.5—1.4mm,遗落田土中越冬,温度上升到12—15℃时,产生菌丝和孢子。菌丝初呈白色,老后灰褐色。分生孢子透明或淡褐色,是侵害浙贝的菌体。致病的潜育期只2天。气温20—23℃时,只13—18小时又大量产生孢子。在4月份多雨适温的气候条件下,5—7天,该病害即猖獗流行,为害严重。在初病和重复传染期间,喷多菌灵,效果较好,可减轻发病60%以上,增产21%。在生产中已得到证实。 The results of the observation were as follows: The sclerotia of the white mold of ZheBai was round or irregular in shape, with black and size of φ0.5-1.4mm. When the temperature dropped to 12-15 ℃, spore. Mycelium was white, old brown. Conidia transparent or light brown, is against the bacteria shellfish. Pathogenic latent period of only 2 days. The temperature of 20-23 ℃, only 13-18 hours and spores produced. Under the condition of rainy temperature in April, 5-7 days, the disease is rampant and detrimental. In the initial illness and repeated infections, spraying carbendazim, the effect is better, can reduce the incidence of more than 60%, an increase of 21%. In production has been confirmed.