大葱生长喜湿怕涝。在生长期间,从7月上旬至8月下旬为秋前暑后大雨盛行的季节,降水量集中,容易在田间积涝成灾,使大葱发生沤根、干尖、黄叶、死亡现象。管理上除了雨水到来之前,做好排涝准备工作,畅通排水沟以外,雨后还应加强中耕松土、施肥促长、及时防治病虫害等管理工作,促进大葱快速恢复正常生长。1.早排水大葱生产期间遇到涝灾后,由于积水 Green onion growth Hello wet floods. During the growing season, from early July to late August, it is a season in which heavy rains prevail during the autumn and summer after the summer solstice. Precipitation is concentrated and it is easy to flood and flood in green fields. In addition to the management of rain before the onset of well preparation for drainage and drainage outside the drainage ditch, after the rain should also strengthen the cultivation of loose soil, fertilizer to promote growth, timely pest control and other management work to promote rapid recovery of green onion normal growth. 1. Early drainage scallions encountered floods during production, due to stagnant water