套根施肥就是让果树植株根系插进袋内肥液中直接吸收养分,既可提高肥料利用率,又可避免养分损失,在同等效果下,用肥量为一般施肥方法的1/100~1/300,为叶面施肥的1/5~1/10。使用浓度低于叶喷浓度,一般硼酸等微肥浓度为0.05%~0.10%,赤霉素等激素浓度为25mg/kg~50mg/kg,塑料肥液袋 Roots fertilization is to let the roots of fruit trees into the bag directly into the nutrient solution in the bag, which can improve the fertilizer utilization, but also to avoid nutrient loss, under the same effect, the amount of fertilizer for the general fertilization method 1/100 ~ 1 / 300, foliar fertilizer 1/5 ~ 1/10. Concentration lower than the concentration of leaf spray, the general concentration of boric acid and other micronutrients 0.05% ~ 0.10%, gibberellin and other hormone concentrations of 25mg / kg ~ 50mg / kg, plastic fertilizer bags