枸枯黄梢枯死的原因很多,根据你果园的位置(滨海),很可能是土壤偏碱(pH7时)引起缺铁退绿症。缺铁症状主要是:叶变小而薄,发硬,转白,导至须根减少,以至严重枯梢。是否此原因,可测一下土壤pH值、叶喷或土施硫酸亚铁(最好是螫合铁)来鉴定一下,然后对症治疗。枸桔黄梢枯死的原因— There are many reasons for the withered yellow shoots to die. Depending on the location of your orchard (coastal), it is likely that the soil is slightly alkaline (pH 7) causing an iron deficient retrogressive disease. The main symptoms of iron deficiency are: leaves become small and thin, stiff hair, turn white, leading to reduce the fibrous roots, as well as severe dry shoots. Whether this is the reason, you can measure the soil pH, leaf spray or soil ferrous sulfate (preferably iron together) to identify, and then symptomatic treatment. Citrus yellow shoot dead reason -