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板栗开花前要做好肥水管理和病虫防治工作,以促壮花穗,增强树势,减少落花落果和空苞,提高坐果率和结实率,增加产量,其措施如下: 一、施花前肥 在春梢萌动前施花前肥,以有机肥和磷钾肥为主,适当补施微量元素。5年生以上的结果树,每株施沤制腐熟的人粪或畜禽粪15～20公斤、磷酸二氢钾1.0～1.5公斤、硫酸镁0.25～0.50公斤、硼砂0.10～0.15公斤。在树冠下挖6～8条深15～20厘米、宽20～30厘米、长80～100厘米的放射沟,将肥料施下,盖土即可。
Chestnut before flowering to do fertilizer and water management and pest control work in order to promote spikes, enhance the tree vigor and reduce the falling flowers and empty bracts, improve fruit set rate and seed setting rate, increase production, the measures are as follows: Fertilizer in the spring shoot before sprouting before flowering fertilizer, organic fertilizer and phosphorus and potassium-based, appropriate replenishment of trace elements. 5-year-old above the results of the tree, each plant Shi system of manure or livestock manure dung 15 to 20 kg, potassium dihydrogen phosphate 1.0 to 1.5 kg, 0.25 to 0.50 kg of magnesium sulfate, borax 0.10 to 0.15 kg. Under the canopy dig 6 to 8 deep 15 to 20 cm wide and 20 to 30 cm long 80 to 100 cm long radioactive ditch, the fertilizer applied, cover the soil can be.