早衰是杂交稻高产的重要障碍因子，如何保护本叶，防止早衰，增强精株抽穗后的光合效率，促进高积累、高运转，是实现杂交稻高产的关键。近2年，我们指导农民采取综合措施防止杂交中稻早衰，取得了显著的成效，每公顷增收稻谷1125千克以上。1．补肥增源杂交中稻抽穗以后，功能 Premature failure is an important obstacle factor for the high yield of hybrid rice. How to protect this leaf, prevent premature aging, enhance photosynthetic efficiency after heading, and promote high accumulation and high turnover are the keys to achieve high yield of hybrid rice. In the past two years, we have guided farmers to take comprehensive measures to prevent premature failure of hybrid mid-rice and achieved remarkable results, with more than 1125 kg of rice per hectare increased. 1. Supplement fertilizer Zenith hybrid rice after heading, function