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稻田水分的不同调节方式对水稻的需水量和产量会产生不同的影响、试验表明，“浅、湿、干”灵活调节的优化灌溉模式与合理施肥的“促、控、养”结合可以减少腾发量而不降低产量，使灌溉水的生产率显著提高。优化灌溉模式能省水增产的原因是可以改善土壤通透性，增强根系活力，提高水稻的分蘖力和有效分蘖率，改善植株形态和产量结构。
Different regulation methods of paddy field water have different effects on water requirement and yield of rice. Experiments show that the optimized irrigation mode of “light, wet and dry” and the combination of “promoting, controlling and raising” Yield without reducing production, irrigation water productivity significantly increased. The reason of optimizing irrigation mode is to improve soil permeability, improve soil permeability, enhance root vigor, improve tillering ability and effective tillering rate of rice, and improve plant morphology and yield structure.