近年来,随着闽北果树种类结构的调整,适宜闽北气候与土壤条件而市场前景又好的锥栗获得了较快的发展。在这锥栗大开发的热潮中,部分果农由于对锥栗的营养需求特点掌握不够全面,单纯依靠氮、磷、钾肥或将氮、磷、钾肥与有机肥配合施用,来提高锥栗的产量,导致土壤锰素逐渐耗竭,缺 In recent years, with the adjustment of the species and structure of fruit trees in northern Fujian, the development of the Chinese chestnut with a good market prospect that is suitable for the climate and soil conditions in northern Fujian has achieved rapid development. In the craze of big development of Castanea henryi, part of the fruit growers increased the yield of Castanea henryi because of their inadequate mastery of the nutrient demand of Castanea henryi, and simply relied on nitrogen, phosphorus and potassium fertilizers or combined application of nitrogen, phosphorus and potassium fertilizers with organic fertilizers , Leading to the gradual depletion of soil manganese, lack of