苹果水心病又称蜜病，是苹果成熟期和贮藏期常发生的一种生理病害。其特征是果肉中出现半透明液体组织，短期内甜度增加，但有异味，不耐贮藏。一、发生原因1．施肥不当。果园不合理的施肥是造成水心病发生的主要原因之一。大量使用氮肥以及氮、磷、钾比例不当，都会导致果实中 Apple water heart disease, also known as honey disease, is a physiological disease that occurs frequently in the apple ripening and storage period. It is characterized by the emergence of translucent liquid tissue in the pulp, the short term increase in sweetness, but the smell, intolerance storage. First, what happened? Improper fertilization. Irrational fertilization of orchards is one of the major causes of water-heart disease. The heavy use of nitrogen fertilizer and the improper ratio of nitrogen, phosphorus and potassium all lead to fruits