【摘要】 研究桑树不同品种和冬伐形式与桑树对花叶病抗性的关系。结果表明,桑树不同品种间对花叶病的抗性有极显著的差异;母本的抗病性对杂交组合的抗病性有较大的作用;不同冬伐处理对桑树花叶病的抗性有极显著的影响;采用冬留长枝的冬伐形式,可使花叶病株发病率降低55.17％、病情指数降低73.99％、病害对桑叶产量的综合损失率降低86.45％。更多还原

【Abstract】 The effect of different varieties and the winter pruning method on mulberry resistance to mosaic disease were studied. The effective technique for controlling mosaic disease was reported for first time. The results indicated that the resistance to mosaic disease was very difference among mulberry varieties. The resistance of hybrid mulberry combination to mosaic disease depended greatly on that of maternal plants. The effects of different winter pruning method on the resistance to mosaic disease were significantly different. It was obtained by the method of high-position pruning shoot in winter that the incidences of mosaic disease plant reduced 55.17% , the disease index reduced 73.99% and the total loss rate of the leaf yield caused by the disease reduced 86.45% , respectively .更多还原