兼答河北读者杜四平1早施基肥改冬季或早春施基肥为秋季采果后落叶前立即施入。施肥方法为在树冠外缘,挖深30~50cm、宽40cm左右的环状沟,或以树干为中心,在果树外缘,环绕果树,间隔挖深30cm、宽20cm放射状施肥穴,并在当天挖沟、当天施肥,施肥量应根据树势、树龄、地力和当年产量 Answered Hebei readers Du Siping 1 early Shi Jifei winter or early spring Shi Jifei for the fall after the harvest fruit immediately applied. The fertilization method is to dig an annular ditch about 30cm to 50cm in width and 40cm in width on the outer edge of the canopy, or around the tree trunk at the outer edge of the fruit tree. Trenching, fertilization the same day, the amount of fertilizer should be based on tree vigor, age, soil fertility and current production