柑桔是多年生常绿树种,年生长量大,挂果期长,对肥水要求较高。许多研究结果证明,头年树体内的营养水平,对次年特别是对次春的生长发育有明显的影响。实行秋施基肥,通过秋季叶片的光合作用,以增加树体的储藏养分,可供次年生长结果的需要。但在具体实施过程中,往往由于基肥不能适时、适量施下,树体越冬储藏养分不足, Citrus perennial evergreen species, annual growth, fruiting long, demanding higher fertilizer and water. Many studies have shown that the level of nutrition in the first year of tree has a significant impact on the next year, especially the growth and development of the next spring. The implementation of autumn base fertilizer, through the photosynthesis of autumn leaves, in order to increase the storage of tree nutrients for the growth of the next year’s needs. However, in the specific implementation process, often due to the base fertilizer can not be timely, the amount of facilities, the tree winter lack of storage of nutrients,