摘要
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。
The different control patterns of rice field water will produce differnt affects on the water requirement and yield of rice. The experiments have shown that combination of the optimal irrigation model of 'shallow and wet and dry' control pattern and the adequate fertilization patter of 'promote and conhol and feed' can decrease the evapotranspiration and not lower the yield and theredore, significantly increase the productivity of irrigation water. The reasons of water saving and yield increasing of the optimal irrigation model are improving soil aeration, strengthening roots activity, enhancing tillering force and effective tillering ratio and improving plant shape and yield structure.
