冬季防寒措施不力,或气候异常,葡萄植株易受冻害。春季出土后,如根部表皮腐烂,皮层与木质部极易分离,木质部呈黑褐色,说明根部已完全冻死;如根皮呈土黄色,木质部黄褐色,为半死根。对于根部受冻的葡萄植株应采取以下救治措施。 一、平茬 冻死的根量达50％以上, Cold winter measures ineffective, or abnormal weather, grape plants susceptible to frost damage. Spring unearthed, such as the roots of the decay of the epidermis, cortex easily separated with the xylem, xylem was dark brown, indicating that the root has been completely frozen to death; such as the root leather was khaki, xylem yellow, semi-dead roots. For the root of the frozen grape plants should take the following treatment. First, stubble freeze-dried root amount of more than 50%