板栗炭疽病的发生与防治一、为害症状叶片受害，产生暗褐色不规则形的病斑，多沿叶脉和叶柄扩展。早春侵染嫩芽和新梢，引起芽或小枝枯死，潮湿时并产生粉红色的分生孢子堆。果实受害多从果顶开始发病，沿侧面扩展到果底部，果皮变黑，其上有灰白色的菌丝。果肉干腐皱缩并... Occurrence and control of chestnut anthracnose First, the victims of damage Victims of disease, resulting in dark brown irregular shaped lesions, more along the veins and petiole expansion. Early spring infestation of buds and shoots, causing shoots or branchlets to die, moist and produce pink conidia. Fruit damage from the top of the fruit began to attack more, along the side to the bottom of the fruit, dark brown, with gray mycelium. Dry fruit rot shrinkage and ...