【摘 要】
：
水稻旱种,是从水稻旱直播发展而来的,是在旱地状况下直播、苗期旱长、中后期利用雨水和适当灌溉以满足稻株需水要求的一种种稻方法.水稻旱种,不仅比普通水田稻节省灌溉用水25
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水稻旱种,是从水稻旱直播发展而来的,是在旱地状况下直播、苗期旱长、中后期利用雨水和适当灌溉以满足稻株需水要求的一种种稻方法.水稻旱种,不仅比普通水田稻节省灌溉用水25～40％,而且可以减少水稻生产中的操作程序(如育秧、移栽等),节省用工,便于机械化生产.特别是与同等条件下的玉米、高粱等旱粮生产相比,经济效益明显.当然,后来由于一些技术和非技术原因,使水稻旱种的应用面积急剧缩减.近年来,随着水危机的日益严重和水稻耐旱品种、除草剂等方面的技术进步,水稻旱种再度兴起,旱种技术又有了新的发展.
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