论文部分内容阅读
1葱头腐烂的原因及症状1.1洋葱软腐病在鳞茎膨大期,第1~2片叶的下部产生半透明灰白色斑,叶鞘基部软化腐败,致外叶倒折,病斑向下扩展;鳞茎部染病,初呈水浸状,向内部开始软化腐烂,散发出强烈的腐烂臭味。1.2洋葱干腐病在生长、贮存过程中均可发病。发病初期下位叶黄化、萎蔫成弯曲;生育盛期洋葱鳞茎侧面呈软腐状腐
1 Onion rot causes and symptoms 1.1 onychomycosis In the bulging bulbs, the first 1 to 2 leaves the lower part of the translucent gray spots, softening of the base of the leaf sheath softening, causing the outer leaf fold, the lesion spread downward; bulb Infected, initially was flooded, began to soften the decay to the interior, emitting a strong rotten odor. 1.2 onion dry rot in growth, storage process can be disease. In the early stages of the disease, the lower leaves were yellowed and wilted into a curved shape. The side of the onion bulb was soft rot