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水稻生长中期(分蘖末期到颖花分化期)水层管理的目标是控制无效分蘖。分蘖末期,水稻营养生长终了,转入生殖生长阶段。此时,大部分有效分蘖已经形成,继续发生的分蘖大多可能是无效的。为了获得高产,这时应采取措施控制无效分蘖的发生,使全部营养集中在有效分蘖上。在水稻分蘖末期,采取不同的灌溉措施,可以控制无效分蘖。将水层加深到分蘖节以上,对正在发生的侧芽能起抑制作用。排水烤田,则是不建立水层而达到抑制无效分蘖的另一措施。据试验,控制无效分蘖,落干烤田优于深灌,烤田比不烤田每亩增产水稻50～100斤。
The middle stage of rice growth (late tillering to spikelet differentiation) The goal of aquifer management is to control inefficient tillers. At the end of tillering stage, the vegetative growth of rice is terminated and transferred to reproductive growth stage. At this point, most of the effective tillers have been formed and most of the tillers that continue to occur may be ineffective. In order to obtain high yield, measures should be taken to control the occurrence of ineffective tillers, so that all the nutrients are concentrated on effective tillers. In the late tillering stage of rice, different irrigation measures can be used to control ineffective tillers. The deepening of the water layer above the tillering node, the side buds that are occurring can have an inhibitory effect. Drainage Baked fields, it is not to establish a water layer and achieve another measure to inhibit ineffective tillering. According to the test, invalid tillering was controlled, and the dry-land grilling field was better than the deep-hole irrigation. The yield of paddy field was 50-100 kg per acre than that of non-grilled land.