一、环状施肥法 在树冠外缘的垂直处挖一条深40厘米,宽50厘米的环状沟,将肥料放入沟中,上覆土15厘米。该法主要用于树冠较小的幼龄果树,基肥、追肥均可。 二、放射状施肥法 以树干为中心,在树冠覆盖面的边缘线内外之处,向外挖沟4—10条,沟深20—50厘米,宽30—50厘米。深度与宽度随沟的外移而扩大,加深。将肥料倒入后覆土,或与土拌匀后一起下沟。该法主要用于成龄 First, the ring fertilizer law in the vertical crown digging a deep 40 cm, 50 cm wide annular groove, the fertilizer into the ditch, the soil over the top 15 cm. The law is mainly used for small young trees canopy, basal, top dressing can be. Second, the radial fertilization method to the trunk as the center, inside and outside the edge of the canopy cover the outside, digging ditches 4-10, furrow 20-50 cm wide and 30-50 cm wide. Depth and width of the trench with the relocation and expansion. After the fertilizer into the casing, or mix well with the soil under the ditch. The law is mainly used for growing up