缺素症是果园中常见的一种营养性病害,在生产中危害较大,常造成树势衰弱,叶片光合功能降低,引起早期落叶,产量品质下降,严重影响了果品质量的提高。现将果园中常见的几种缺素症:如缺钾症、缺硼症、缺锌症和缺铁症的症状、发病规律及防治方法简介如下,供果农在实践中参考。 Abiotic diseases are common nutritional diseases in orchards. They are more harmful in production and often result in weaker plantation and lower photosynthetic functions of leaves, leading to early deciduous leaves and declining yield and yield, which seriously affect the quality of fruit products. Now common in the orchard of several deficiencies: such as potassium deficiency, boron deficiency, zinc deficiency and iron deficiency symptoms, incidence and prevention methods are summarized below, for farmers in the practice of reference.