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水稻生长后期(孕穗至黄熟期)的水层管理,要为“后期不早衰,粒饱活秆熟”的目标服务。水稻从幼穗分化到抽穗前为技节孕穗期,它包括圆秆拔节、幼穗分化和孕穗等生育阶段,历时约30天,这是决定水稻收成丰欠的关键时期。拔节标志着水稻从营养生长阶段,转入以幼穗分化形成为主的生殖生长阶段。根系深扎,根的数量和叶面积达到最大限度,叶色逐渐由浓绿转为淡黄(拔节黄)。这时期的栽培管理应保证植株正常生长、壮株壮蘖,还要防止茎叶过早封行,以使幼穗分化良好、穗大粒重。
The late stage of rice growth (booting to yellow ripening) of the water layer management, for the “late premature aging, grain full stalks cooked,” the goal of service. Rice from young spike differentiation to heading before heading for the booting stage, which includes round stalk jointing, panicle differentiation and booting stage and other growth stages, which lasted about 30 days, which determine the harvest of rice harvest owed a critical period. Jointing marks the rice from the vegetative growth stage, transferred to panicle differentiation formation-based reproductive growth stage. Root deep tie, the number of roots and leaf area to maximize the leaf color gradually from dark green to yellow (jointing yellow). During this period of cultivation and management should ensure the normal growth of plants, strong sprouts and strong stalks, but also to prevent premature closure of stems and leaves in order to make young spike well-differentiated, spike large grain weight.