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水稻需水临界期是水稻栽培中的一个重要指标。特别是在节水型的水稻高产高效益栽培技术的运用中,准确地掌握各水稻品种的需水临界期,更显得尤为重要。目前对水稻需水临界期的论述各异,有的将临界期笼统地定在拔节孕穗期;有的定在
Rice critical water supply is an important indicator of rice cultivation. Especially in the application of water-saving and high-yielding cultivation techniques of rice, it is even more important to accurately grasp the critical period of water requirement of all rice varieties. At present, the discussion on the critical period of water requirement for rice is different, and some of them set the critical period generally at the stage of jointing and booting; some are