夏玉米生育中后期,是决定产量的关键时期,不仅时常受到旱灾的威胁,还要遭遇风、雹、虫、病等气象灾害与病虫危害的胁迫。因此,积极应用防灾减灾技术,加强田间管理,把灾害损失降至最低,是夺取夏玉米高产稳产的关键。 Summer maize fertility in the late, is to determine the key period of yield, not only by the threat of drought often, but also encounter wind, hail, insects, diseases and other meteorological disasters and pests hazards coercion. Therefore, the active application of disaster prevention and mitigation technologies, strengthening field management, and disaster losses to a minimum, is to seize the key to high and stable yield of summer maize.