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1加强肥水管理落叶后至土壤封冻前尽早施基肥。若年前没有施,初春发芽前也应补施。幼树应采用放射状沟施,做法是在距树干20cm到树冠外围,挖6～8条宽20～40cm、深10～20cm的内浅外深、内窄外宽的放射状沟,将圈肥施入并覆土。结果树采用井字形沟施,在树冠下顺行挖宽30cm、深15～2
1 to strengthen the management of fertilizer and water as soon as possible after the deciduous soils to soil freezing base fertilizer. If no years ago Shi, early spring should be supplemented before sprouting. Saplings should be applied radial ditch approach is 20cm away from the trunk to the crown periphery, dug 6 to 8 wide 20 ~ 40cm, deep 10 ~ 20cm within the shallow depth of the outer narrow width of the radial ditch, the circle of fertilizer applied And soil cover. The results of the tree using well-shaped ditch facilities, in the crown along the excavation width 30cm, depth 15 ~ 2