果树根外追肥,就是对枝干、叶片进行喷洒液体肥料的过程。根外追肥具有灵活方便、用肥少、肥效快等特点,是对土壤追肥的补充。一、喷肥时间每年春天发芽前至落叶前均可进行。落叶前半个月和发芽前进行根外追肥,可推迟落叶,提高叶片光合能力,增加贮藏营养和有助 Fruit tree root top dressing, is on the branches, leaf spraying liquid fertilizer process. Root top dressing with flexibility and convenience, with less fertilizer, fertilizer and other characteristics fast, is topdressing the soil to supplement. First, the fertilizer time before spring each year before germination to deciduous can be carried out. Half a month before deciduous and pre-emergence root top dressing can delay leaves, improve leaf photosynthetic capacity, increase storage and help