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水稻后期是指从抽穗到成熟这段时期。从时间上讲:是从八月上旬至九月下旬这五十多天的时间里,此时穗、粒已定型。这个时期的主要矛盾是粒饱、粒重与早衰的矛盾。其主攻方向是:“养根保叶、提高结实率、增粒重”。水稻后期根系有逐渐减弱的特点,在田间管理上要采取措施,提高根系活力,防止早衰,达到粒饱、粒重、稳产、高产的目的,应抓好以下四个方面:
Late rice is from heading to maturity of this period. From the time speaking: it is from early August to late September this more than 50 days, at this time spike, grain has been set. The main contradiction in this period is the conflict between grain fullness, grain weight and premature aging. The main direction is: “Yang root Paul leaves, improve seed setting, increase grain weight.” In the late stage of rice, there is a gradual weakening of the root system. In field management, measures should be taken to improve root vigor, prevent premature aging, achieve full grain, grain weight, stable yield and high yield. The following four aspects should be met: