硼是一种微量元素。板栗施用硼肥，能有效地降低空苞率，提高单株产量。具体施用方法是：1、芽期施础：在早春结合施萌芽肥，把硼砂施入土壤中，一般每株施硼砂25O－400克，缺硼的土壤可适当多施。2‘花期喷硼。在开花期喷施硼肥一次，半个月后再喷第二次，每亩用硼砂150－250 Boron is a trace element. Chestnut application of boron fertilizer, can effectively reduce the rate of empty shell and improve per plant yield. The specific application method is: 1, Bud Shizhen: In early spring combined with bud budding fertilizer, the borax into the soil, the general application of borax 25O-400 grams per plant, boron-deficient soil may be appropriate to apply. 2 ’flowering boron. Spraying boron fertilizer at the flowering stage, spray a second time after half a month, with bauxite per acre 150-250