葡萄叶面喷肥,也叫根外追肥。肥面广,肥效快,肥料利用率高.操作方便,是减少落花落果,提高含糖量,增强抗病力,提高产量的好办法,是夺取丰收的重要技术措施。葡萄叶面喷肥。可根据不同时期喷施。其具体喷肥时间及作法是:(1)生长前期要以喷施氮肥为主,可喷施0.3—0.5%的尿素和0.2—0.3%磷酸二氢钾溶液,促进叶 Grape foliar fertilizer, also known as top dressing. It is an important technical measure to seize good harvest, which is a good way to reduce the loss of flowers, improve the sugar content, enhance the disease resistance and increase the yield. Grape foliar fertilizer. Can be sprayed according to different periods. The specific time and practices of fertilizer are: (1) to the growth of the early spraying nitrogen fertilizer can spray 0.3-0.5% urea and 0.2-0.3% potassium dihydrogen phosphate solution to promote leaf