近年来,施于晚稻的农家肥越来越少,化肥用量越来越多。化肥容易损失,肥效虽快但不够稳长。而晚稻多为粳稻品种,需肥量大,又生长在高温季节,肥料容易分解消耗,后期往往因脱肥而造成看不见的减产——不实率增加、半米率增加、千粒重下降。这里说的后期是指晚稻抽穗之后的穗 In recent years, less and less manure applied to late rice, more and more fertilizer. Fertilizer easy to lose, fertilizer effect is fast but not stable enough. The late rice is mostly japonica rice varieties, the need for large amount of fertilizer, and growing in the hot season, easy decomposition of fertilizer consumption, often due to late fertilization caused by invisible production - false rate increase, half a meter rate increased, 1000-grain weight decreased. The later stage here refers to the ear after late rice heading