杨梅是江南地区特产水果 ,但产量不高 ,品质不稳。为此 ,对影响杨梅产质量最主要的病害——梢枯病开展了研究 ,首次探明该病害属生理性缺硼症。本文报道了杨梅缺硼症的诊断技术 ,以及杨梅缺棚症与锌、钾、氮营养元素失调症的鉴别 Yangmei is a specialty of Jiangnan fruit, but the yield is not high, the quality of instability. To this end, the most important diseases affecting the production and quality of bayberry blight - blight carried out a study for the first time that the disease is a physiological boron deficiency. This article reports on the diagnosis of boron deficiency in Yangmei and the discrimination between the nutritional disorders of zinc, potassium and nitrogen