7～8月是柑桔果实开始增长膨大和夏、秋梢生长交换时期,植株根系也进入第二次发根高峰,生长旺盛,吸肥能力强,且枝梢和果实又需要消耗大量的养分。在这个时间重施肥,既能提高幼年树和树势强的成年树的座果率,促进果实生长,又能抽发粗壮的早秋梢。7月施肥的用量应占全年施肥总量的40～50%。所 July to August is the beginning of citrus fruit growth and expansion and the summer and autumn shoot growth and exchange of plant roots also entered the second peak of hair growth, strong absorption capacity, and shoots and fruits also need to consume a lot of nutrients . Fertilization at this time, both to improve young tree and tree vigor adult tree fruit rate, promote fruit growth, but also pumping thick early fall tip. The amount of fertilization in July should account for 40% to 50% of the total annual fertilization. The