库尔勒香梨是新疆的名优水果之一 ,酥脆爽口 ,香味浓郁 ,营养丰富 ,为国内梨果之冠。但在香梨生产中 ,由于营养失调 ,严重影响产量 ,甚至使树势衰弱以至死亡 ,给生产造成严重损失。为了提高香梨的产量和品质 ,应正确识别缺素症状 ,并根据症状进行防治。1　 缺氮症在生长期缺氮 Korla fragrant pear Xinjiang is one of the famous fruits, crisp and refreshing, rich flavor, nutrient-rich, the crown of the domestic pear. However, pear production, due to malnutrition, seriously affect the yield, and even make the tree weak and even death, causing serious losses to production. In order to improve the yield and quality of pear, we should correctly identify the symptoms of deficiency and control according to the symptoms. Nitrogen deficiency Nitrogen deficiency during growth