枣锈病是乐陵枣区的主要病害。上年病叶上越冬的夏孢子和树体带菌是初侵染来源。病叶上的越冬夏孢子可存活到6月中旬。病菌潜育期平均为11—12天,流行程度与当年气候条件密切相关。5—7月份的露、雾次数和8月份的雨次、雨量决定当年流行病的程度。据此可以预报防治适期和次数。 Jujube rust is the main disease in Lingling jujube area. Uneven spores and tree-borne diseases that overwintered the diseased leaves of the previous year were the source of initial infection. Overwintering summer spores on diseased leaves can survive to mid-June. Germination of the average duration of 11-12 days of germs, prevalence and climate conditions are closely related. The number of dew and fog in May-July and the number of rainy seasons in August and the amount of rainfall determined the extent of the epidemic in those days. Based on this, we can predict the appropriate period and frequency of prevention and treatment.