枣锈病在发病初期,叶背面出现淡绿色斑点,渐变褐色,而后病斑凸起,呈黄褐色,不久破裂,露出黄粉(病菌夏孢子堆),严重时,叶片布满黄粉,变灰黄色,枯干脱落,生长后期,在夏孢子堆附近形成棕褐色病斑(冬孢子堆)。防治方法: Jujube rust in the early stages of the disease, pale green spots appear on the back of the leaves, gradually brown, and then the disease spots raised, yellowish brown, soon rupture, exposing yellow powder (bacteria spores of summer spores), severe, leaves covered with yellow, Dry off, late growth, the formation of brown spore in the summer near the brown spot (teliospores). Prevention methods: