水稻叶面施肥,是将水稻生长所需肥料,按一定比例对成水溶液喷洒在水稻叶片上,通过叶片吸收,促进水稻生长发育以获得较高产量的施肥技术。目前,该项施肥技术在生产上应用面积不断扩大,成为传统土壤施肥的必要补充。水稻叶面施肥,具有吸收速度快,能及时满足生长发育的营养需要,特别是能及时补充微量元素；能节约农本,经济效益较高；灵活性强,可以根据生长情况随时追施；还有结合病虫害防治一并操作等特点。因此,受到广大农户青睐。叶面施肥在水稻上的简要应用具体如下：1苗期对于旱育秧、软盘育秧,分别在3叶期和栽秧前4～5d,用1%尿素液各喷1次。满足断奶期和抛栽前对养分的供应连续性需要。苗期至分蘖末如果长势弱,有病害,可结合治病喷 Rice foliar fertilization, is the fertilizer needed for the growth of rice, according to a certain percentage of aqueous solution sprayed on rice leaves, absorbed through the leaves, and promote rice growth and development in order to obtain higher yield fertilization techniques. At present, the application of fertilization technology in the production area continues to expand, become the necessary complement to the traditional soil fertilization. Rice foliar fertilization, with fast absorption, can meet the nutritional needs of growth and development, in particular, timely replenishment of trace elements; can save the cost of farming, higher economic efficiency; flexibility, according to the growth of the top dressing at any time; also Combined with pest control and operation characteristics. Therefore, favored by the majority of farmers. Foliar fertilization in rice on a brief application as follows: 1 seedling for drought nursery, floppy disk nursery, respectively, in the 3-leaf stage and 4 ~ 5d before planting, with 1% urea spray each time. To meet the weaning and throwing planted nutrient supply continuity needs. Seedling to tillering at the end of growth if weak, disease, can be combined with treatment spray