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"Post-dressing is 布拉格the key to increasing production." Li Xinhai, chief scientist of the National Corn Industry Technology System, said that waterlogging and dewatering will lead to soil nutrient loss, which is difficult to meet the nutrient supply of corn during the filling period, and it is easy to cause corn defertilization. Pay attention to the watered plots in time Topdressing promotes growth. According to the actual situation in the disaster-stricken areas, experts strengthened the management of fertilizer and water, adopted "one spray, multiple effects" technical measures for comprehensive prevention and control, improved the activity and resistance of corn, and promoted the restoration of normal growth of plants.