近年来,白术在国内外属贵重紧俏药品,种植面积逐年扩大,但在生产中随着化肥用量的增加和作物产量的不断提高.土壤中锌被作物大量吸收而相应缺乏。一些土壤为钙质反应pH值偏高易产生ZnCO_3、ZnO、Zn(PO_4)_2等难溶物被土壤固定。氮、磷、钾与锌的比例失调,致使白术幼苗老化,叶片变小发黄,植株萎缩畸形,根部腐烂而大片死亡,严重地影响了产量和品质。 In recent years, Atractylodes macrocephalus is very expensive in the country and abroad, and the acreage has been expanding year by year, but with the increase of chemical fertilizer and crop yield, there is a corresponding lack of zinc in soils. In some soils, ZnCO 3 is easily produced when the pH value of calcium reaction is high, and insoluble materials such as ZnO and Zn (PO 4) 2 are fixed by the soil. Nitrogen, phosphorus, potassium and zinc imbalance, resulting in Atractylodes seedling aging, leaves smaller yellow, plant shrinkage deformity, root rot and large death, seriously affecting the yield and quality.