杂交晚粳的后期管理，是指抽穗扬花、灌浆成熟等阶段的田间管理。此期的主要生理特性是库大源相对不足，即穗大，颖花数多，抽穗快，齐穗后茎鞘物质运转率和灌浆速度不如籼杂快，且有二次灌浆等特性。此期高产栽培技术关键是稳库增源，主攻目标是提高结实率和增加千粒重。... Late management of late hybrid japonica rice refers to the heading and flowering, filling and other stages of field management. The major physiological characteristics of this period were the relative lack of large source of sinks, that is, large spikes, large spikelets, fast heading, and higher rates of transformation and filling of stems and sheaths than heading indica hybrids after heading, and secondary filling. The key to the high-yielding cultivation technique of this period is to stabilize the source of reservoirs and the main target is to increase the seed setting rate and increase the 1000-grain weight. ...