七、后期施氮量诊断及其相应的栽培技术要点水稻生育后期是指从剑叶全出至完熟期这段时间。后期施肥亦应根据当时禾苗生长状况诊断确定。一般后期施肥多在孕穗末期(剑叶全出后6天)或齐穗期适当补施壮尾肥或齐穗期后根外追肥,能起到养根保叶、防止早衰、提高结实率,增加千粒重的作用。后期施肥取决 Seven, late nitrogen fertilizer diagnosis and its corresponding cultivation techniques The late rice growth refers to all the time from the flag leaf to maturity period. Late fertilization should also be based on the diagnosis of seedling growth status determined. Fertilization and more late in the late bout (flag leaf 6 days after the all-out) or at the earliest stage of full compliment Shi Zhuo fat or full heading after the top dressing, can play to protect the leaves, to prevent premature aging and improve the seed setting rate, Increase the role of thousand kernel weight. Post-fertilization depends