上海郊区属三熟制地区,菌源、气候因索都有利于赤霉病的发生和为害,但每年发生和为害程度均不一致。我们在赤霉病流行规律与测报上作了一些分析,认为赤霉病的为害和流行与子囊孢子成熟飞散高峰期与麦 Shanghai suburbs are three cooked areas, sources of bacteria, climatic factors are conducive to the occurrence of scab and damage, but the annual occurrence and degree of harm are inconsistent. We have made some analysis on the epidemic rules and the report of the scab, we think that the damage and epidemic of scab and sporadic maturity of ascospores and spikes