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瑞香烂颈病发生在植株主干基部而得名。病原菌为半知菌类交链孢属真菌,存活于寄主植物的病残体及土壤中其它植物的碎片上。由土壤的翻动、迁用、雨水、施肥、浇水的冲刷和溅渍而传播,也可能由昆虫叮咬义务带菌传播。当植株因过度干旱后大量灌水,渍伤根群;或冬季遭受冻伤;或春末至冬初过多剪取枝条;或使用激素过多,不断开花,且花量过多;或偏施氮肥导致抗性降低;或施用未充分腐熟的有机肥而烫渍株基皮,并因臭气熏蒸,引来昆虫叮咬株基等因素造成生长衰弱、抗性下降时,开
Ruixiang rotten neck disease occurred in the plant stem base named. Pathogens are semi-known fungi class Alternaria fungi, surviving in the host plant disease residues and soil in other plant fragments. Spread from the soil, relocation, rain, fertilization, watering scour and splashing spread, may also be insect bites carry the obligation to carry the bacteria. When the plants are over-exposed to a lot of water after irrigation, root injury; or frostbite in winter; or late spring to early winter cut branches too much; or use too much hormones, and flowering, and excessive flowering; or partial nitrogen fertilizer Resulting in reduced resistance; or the application of inadequate maturity of organic fertilizer and stains base stains, and because of odor fumigation, insect bites caused by factors such as plant growth caused by weakness, resistance decreased, the open