水稻无水层灌溉，就是在水稻秧苗返青后不再在田面上积水，而是根据水稻不同生长期的需要，使土壤保持７０％～１００％的含水量。常规一季水稻需灌水１２～２０次，而采用这种灌溉技术，只需２～６次，灌溉水量大大节省。这项技术的具体操作方法并不复杂，现在介绍其中两种。 Anhydrous rice irrigation, is no longer in the field after the rice seedlings regurgitate water, but according to the needs of different rice growing season, so that the soil to maintain 70% to 100% of the water content. Conventional rice needs to be irrigated 12 to 20 times a year, but using this irrigation technology, only 2 to 6 times, a significant saving in irrigation water. The specific method of operation of this technology is not complicated, and now introduce two of them.