“断奶肥”是指水稻秧苗离乳期的追肥。它直接关系到秧苗能否正常地从土壤中吸取养分。通常水稻种子胚乳中贮藏的淀粉要到三叶期才能耗尽,因而有些人认为“断奶肥”就应该在三叶期施用。事实上,这是一种错误认识。 “Weaning fat ” refers to the top-dressing of rice seedlings during the lactation period. It is directly related to the normal seedlings can absorb nutrients from the soil. Often the starches stored in the endosperm of rice seeds are depleted until the three-leaf stage, so some people think that “weaning” should be applied at the three-leaf stage. In fact, this is a misconception.